The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells.
The visualization of deep structures of the body by recording the reflections or echoes of ultrasonic pulses directed into the tissues. Use of ultrasound for imaging or diagnostic purposes employs frequencies ranging from 1.6 to 10 megahertz.
Echocardiography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image.
Ultrasonography applying the Doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (Stedman, 25th ed)
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
Backflow of blood from the LEFT VENTRICLE into the LEFT ATRIUM due to imperfect closure of the MITRAL VALVE. This can lead to mitral valve regurgitation.
Mental processing of chromatic signals (COLOR VISION) from the eye by the VISUAL CORTEX where they are converted into symbolic representations. Color perception involves numerous neurons, and is influenced not only by the distribution of wavelengths from the viewed object, but also by its background color and brightness contrast at its boundary.
Ultrasonography applying the Doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return.
Developmental abnormalities in any portion of the VENTRICULAR SEPTUM resulting in abnormal communications between the two lower chambers of the heart. Classification of ventricular septal defects is based on location of the communication, such as perimembranous, inlet, outlet (infundibular), central muscular, marginal muscular, or apical muscular defect.
Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.
Flaps of tissue that prevent regurgitation of BLOOD from the HEART VENTRICLES to the HEART ATRIA or from the PULMONARY ARTERIES or AORTA to the ventricles.
Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).
Changes in the observed frequency of waves (as sound, light, or radio waves) due to the relative motion of source and observer. The effect was named for the 19th century Austrian physicist Johann Christian Doppler.
The valve between the left atrium and left ventricle of the heart.
Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.
Malformations of CORONARY VESSELS, either arteries or veins. Included are anomalous origins of coronary arteries; ARTERIOVENOUS FISTULA; CORONARY ANEURYSM; MYOCARDIAL BRIDGING; and others.
A non-invasive technique using ultrasound for the measurement of cerebrovascular hemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
The flow of BLOOD through or around an organ or region of the body.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
The circulation of blood through the CORONARY VESSELS of the HEART.
The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the fetus and with reference to organs or the detection of maternal or fetal disease.
Function of the human eye that is used in bright illumination or in daylight (at photopic intensities). Photopic vision is performed by the three types of RETINAL CONE PHOTORECEPTORS with varied peak absorption wavelengths in the color spectrum (from violet to red, 400 - 700 nm).
Echocardiography applying the Doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
Type of vision test used to determine COLOR VISION DEFECTS.
Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.
Pathological conditions involving the HEART including its structural and functional abnormalities.
Color of hair or fur.
Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
An infant during the first month after birth.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Ultrasonography of internal organs using an ultrasound transducer sometimes mounted on a fiberoptic endoscope. In endosonography the transducer converts electronic signals into acoustic pulses or continuous waves and acts also as a receiver to detect reflected pulses from within the organ. An audiovisual-electronic interface converts the detected or processed echo signals, which pass through the electronics of the instrument, into a form that the technologist can evaluate. The procedure should not be confused with ENDOSCOPY which employs a special instrument called an endoscope. The "endo-" of endosonography refers to the examination of tissue within hollow organs, with reference to the usual ultrasonography procedure which is performed externally or transcutaneously.
A method of non-invasive, continuous measurement of MICROCIRCULATION. The technique is based on the values of the DOPPLER EFFECT of low-power laser light scattered randomly by static structures and moving tissue particulates.
Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
Color of the iris.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
Coloration or discoloration of a part by a pigment.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Use of ultrasound for imaging the breast. The most frequent application is the diagnosis of neoplasms of the female breast.
Specialized arterial vessels in the umbilical cord. They carry waste and deoxygenated blood from the FETUS to the mother via the PLACENTA. In humans, there are usually two umbilical arteries but sometimes one.
Substances used to allow enhanced visualization of tissues.
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
Sulfur hexafluoride. An inert gas used mainly as a test gas in respiratory physiology. Other uses include its injection in vitreoretinal surgery to restore the vitreous chamber and as a tracer in monitoring the dispersion and deposition of air pollutants.
Pathophysiological conditions of the FETUS in the UTERUS. Some fetal diseases may be treated with FETAL THERAPIES.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization.
Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.
Use of reflected ultrasound in the diagnosis of intracranial pathologic processes.
The circulation of BLOOD, of both the mother and the FETUS, through the PLACENTA.
The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.
Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.
The heart of the fetus of any viviparous animal. It refers to the heart in the postembryonic period and is differentiated from the embryonic heart (HEART/embryology) only on the basis of time.
Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
A cutaneous pouch of skin containing the testicles and spermatic cords.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.
The middle third of a human PREGNANCY, from the beginning of the 15th through the 28th completed week (99 to 196 days) of gestation.
Radiography of blood vessels after injection of a contrast medium.
The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.
The failure of a FETUS to attain its expected FETAL GROWTH at any GESTATIONAL AGE.
The largest of the cerebral arteries. It trifurcates into temporal, frontal, and parietal branches supplying blood to most of the parenchyma of these lobes in the CEREBRAL CORTEX. These are the areas involved in motor, sensory, and speech activities.
Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology.
General term for CYSTS and cystic diseases of the OVARY.
The vessels carrying blood away from the heart.
Elements of limited time intervals, contributing to particular results or situations.
Radiography of any part of the urinary tract.
Coloring, shading, or tinting of prosthetic components, devices, and materials.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
Any technique by which an unknown color is evaluated in terms of standard colors. The technique may be visual, photoelectric, or indirect by means of spectrophotometry. It is used in chemistry and physics. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Period of contraction of the HEART, especially of the HEART VENTRICLES.
Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.
The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.
Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.
A short thick vein formed by union of the superior mesenteric vein and the splenic vein.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Coloration of the skin.
Pathological processes of the TESTIS.
The genital canal in the female, extending from the UTERUS to the VULVA. (Stedman, 25th ed)
The arterial blood vessels supplying the CEREBRUM.
The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.
The illumination of an environment and the arrangement of lights to achieve an effect or optimal visibility. Its application is in domestic or in public settings and in medical and non-medical environments.
The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
The last third of a human PREGNANCY, from the beginning of the 29th through the 42nd completed week (197 to 294 days) of gestation.
Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
Appendages of the UTERUS which include the FALLOPIAN TUBES, the OVARY, and the supporting ligaments of the uterus (BROAD LIGAMENT; ROUND LIGAMENT).
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Care given during the period prior to undergoing surgery when psychological and physical preparations are made according to the special needs of the individual patient. This period spans the time between admission to the hospital to the time the surgery begins. (From Dictionary of Health Services Management, 2d ed)
The articulation between a metacarpal bone and a phalanx.
The beginning third of a human PREGNANCY, from the first day of the last normal menstrual period (MENSTRUATION) through the completion of 14 weeks (98 days) of gestation.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
That portion of the body that lies between the THORAX and the PELVIS.
Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.
A graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli.
Discrete abnormal tissue masses that protrude into the lumen of the DIGESTIVE TRACT or the RESPIRATORY TRACT. Polyps can be spheroidal, hemispheroidal, or irregular mound-shaped structures attached to the MUCOUS MEMBRANE of the lumen wall either by a stalk, pedunculus, or by a broad base.
The heart rate of the FETUS. The normal range at term is between 120 and 160 beats per minute.
A small circumscribed mass in the THYROID GLAND that can be of neoplastic growth or non-neoplastic abnormality. It lacks a well-defined capsule or glandular architecture. Thyroid nodules are often benign but can be malignant. The growth of nodules can lead to a multinodular goiter (GOITER, NODULAR).
Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.
The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.
A branch arising from the internal iliac artery in females, that supplies blood to the uterus.
Application of fingers with light pressure to the surface of the body to determine consistence of parts beneath in physical diagnosis; includes palpation for determining the outlines of organs.
Positive test results in subjects who do not possess the attribute for which the test is conducted. The labeling of healthy persons as diseased when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed)
Diseases of the uterine appendages (ADNEXA UTERI) including diseases involving the OVARY, the FALLOPIAN TUBES, and ligaments of the uterus (BROAD LIGAMENT; ROUND LIGAMENT).
A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.
Veins which drain the liver.
Tumors or cancer of the LIVER.
Act of listening for sounds within the body.
The condition of an anatomical structure's being constricted beyond normal dimensions.
Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy.
The part of a human or animal body connecting the HEAD to the rest of the body.
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
A storage reservoir for BILE secretion. Gallbladder allows the delivery of bile acids at a high concentration and in a controlled manner, via the CYSTIC DUCT to the DUODENUM, for degradation of dietary lipid.
Inflammation of the EPIDIDYMIS. Its clinical features include enlarged epididymis, a swollen SCROTUM; PAIN; PYURIA; and FEVER. It is usually related to infections in the URINARY TRACT, which likely spread to the EPIDIDYMIS through either the VAS DEFERENS or the lymphatics of the SPERMATIC CORD.
Pathological processes of the OVARY.
The vessels carrying blood away from the capillary beds.
The inferior part of the lower extremity between the KNEE and the ANKLE.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
Physiologic or biochemical monitoring of the fetus. It is usually done during LABOR, OBSTETRIC and may be performed in conjunction with the monitoring of uterine activity. It may also be performed prenatally as when the mother is undergoing surgery.
Results of conception and ensuing pregnancy, including LIVE BIRTH; STILLBIRTH; SPONTANEOUS ABORTION; INDUCED ABORTION. The outcome may follow natural or artificial insemination or any of the various ASSISTED REPRODUCTIVE TECHNIQUES, such as EMBRYO TRANSFER or FERTILIZATION IN VITRO.
Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
The constant checking on the state or condition of a patient during the course of a surgical operation (e.g., checking of vital signs).
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.
Patient care procedures performed during the operation that are ancillary to the actual surgery. It includes monitoring, fluid therapy, medication, transfusion, anesthesia, radiography, and laboratory tests.
Bleeding from blood vessels in the UTERUS, sometimes manifested as vaginal bleeding.
An abnormal twisting or rotation of a bodily part or member on its axis.
Inflammation of a synovial membrane. It is usually painful, particularly on motion, and is characterized by a fluctuating swelling due to effusion within a synovial sac. (Dorland, 27th ed)
Abnormal enlargement or swelling of a KIDNEY due to dilation of the KIDNEY CALICES and the KIDNEY PELVIS. It is often associated with obstruction of the URETER or chronic kidney diseases that prevents normal drainage of urine into the URINARY BLADDER.
A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
The vein accompanying the femoral artery in the same sheath; it is a continuation of the popliteal vein and becomes the external iliac vein.
The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE.
The articulation between the head of one phalanx and the base of the one distal to it, in each toe.
Photosensitive afferent neurons located primarily within the FOVEA CENTRALIS of the MACULA LUTEA. There are three major types of cone cells (red, blue, and green) whose photopigments have different spectral sensitivity curves. Retinal cone cells operate in daylight vision (at photopic intensities) providing color recognition and central visual acuity.
The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.
Removal and examination of tissue obtained through a transdermal needle inserted into the specific region, organ, or tissue being analyzed.
The circulation of the BLOOD through the MICROVASCULAR NETWORK.
Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)
Flat keratinous structures found on the skin surface of birds. Feathers are made partly of a hollow shaft fringed with barbs. They constitute the plumage.
A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)
A benign tumor derived from smooth muscle tissue, also known as a fibroid tumor. They rarely occur outside of the UTERUS and the GASTROINTESTINAL TRACT but can occur in the SKIN and SUBCUTANEOUS TISSUE, probably arising from the smooth muscle of small blood vessels in these tissues.
Embolism or thrombosis involving blood vessels which supply intracranial structures. Emboli may originate from extracranial or intracranial sources. Thrombosis may occur in arterial or venous structures.
Negative test results in subjects who possess the attribute for which the test is conducted. The labeling of diseased persons as healthy when screening in the detection of disease. (Last, A Dictionary of Epidemiology, 2d ed)
Clinical syndrome describing overuse tendon injuries characterized by a combination of PAIN, diffuse or localized swelling, and impaired performance. Distinguishing tendinosis from tendinitis is clinically difficult and can be made only after histopathological examination.
The main artery of the thigh, a continuation of the external iliac artery.
Tumors or cancer of the UTERUS.
The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measurements of this visual function are used to evaluate visual acuity and to detect eye disease.
Determination of the nature of a pathological condition or disease in the postimplantation EMBRYO; FETUS; or pregnant female before birth.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL.
A vascular anomaly due to proliferation of BLOOD VESSELS that forms a tumor-like mass. The common types involve CAPILLARIES and VEINS. It can occur anywhere in the body but is most frequently noticed in the SKIN and SUBCUTANEOUS TISSUE. (from Stedman, 27th ed, 2000)
Blocking of a blood vessel in the SKULL by an EMBOLUS which can be a blood clot (THROMBUS) or other undissolved material in the blood stream. Most emboli are of cardiac origin and are associated with HEART DISEASES. Other non-cardiac sources of emboli are usually associated with VASCULAR DISEASES.
An OOCYTE-containing structure in the cortex of the OVARY. The oocyte is enclosed by a layer of GRANULOSA CELLS providing a nourishing microenvironment (FOLLICULAR FLUID). The number and size of follicles vary depending on the age and reproductive state of the female. The growing follicles are divided into five stages: primary, secondary, tertiary, Graafian, and atretic. Follicular growth and steroidogenesis depend on the presence of GONADOTROPINS.
The volume of BLOOD passing through the HEART per unit of time. It is usually expressed as liters (volume) per minute so as not to be confused with STROKE VOLUME (volume per beat).
The hemodynamic and electrophysiological action of the right HEART VENTRICLE.
Physical activity of the FETUS in utero. Gross or fine fetal body movement can be monitored by the mother, PALPATION, or ULTRASONOGRAPHY.
The twisting of the SPERMATIC CORD due to an anatomical abnormality that left the TESTIS mobile and dangling in the SCROTUM. The initial effect of testicular torsion is obstruction of venous return. Depending on the duration and degree of cord rotation, testicular symptoms range from EDEMA to interrupted arterial flow and testicular pain. If blood flow to testis is absent for 4 to 6 h, SPERMATOGENESIS may be permanently lost.
Bony cavity that holds the eyeball and its associated tissues and appendages.
Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.
The formation or presence of a blood clot (THROMBUS) within a vein.
General or unspecified injuries involving organs in the abdominal cavity.
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
Examination of the portal circulation by the use of X-ray films after injection of radiopaque material.
Endoscopic examination, therapy or surgery of the interior of the uterus.
Forced expiratory effort against a closed GLOTTIS.
Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.
The venous trunk which receives blood from the lower extremities and from the pelvic and abdominal organs.
Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (Mayo Clin Proc 1993;68:221-40)
Radiography of the vascular system of the brain after injection of a contrast medium.
Inflammation of a vein associated with a blood clot (THROMBUS).
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
A complication of PREGNANCY, characterized by a complex of symptoms including maternal HYPERTENSION and PROTEINURIA with or without pathological EDEMA. Symptoms may range between mild and severe. Pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease.
Using fine needles (finer than 22-gauge) to remove tissue or fluid specimens from the living body for examination in the pathology laboratory and for disease diagnosis.
Pregnancy in which the mother and/or FETUS are at greater than normal risk of MORBIDITY or MORTALITY. Causes include inadequate PRENATAL CARE, previous obstetrical history (ABORTION, SPONTANEOUS), pre-existing maternal disease, pregnancy-induced disease (GESTATIONAL HYPERTENSION), and MULTIPLE PREGNANCY, as well as advanced maternal age above 35.
Developmental abnormalities involving structures of the heart. These defects are present at birth but may be discovered later in life.
Removal and pathologic examination of specimens in the form of small pieces of tissue from the living body.
A branch of the celiac artery that distributes to the stomach, pancreas, duodenum, liver, gallbladder, and greater omentum.
Abnormal formation of blood vessels that shunt arterial blood directly into veins without passing through the CAPILLARIES. They usually are crooked, dilated, and with thick vessel walls. A common type is the congenital arteriovenous fistula. The lack of blood flow and oxygen in the capillaries can lead to tissue damage in the affected areas.
The joint that is formed by the distal end of the RADIUS, the articular disc of the distal radioulnar joint, and the proximal row of CARPAL BONES; (SCAPHOID BONE; LUNATE BONE; triquetral bone).
Disease having a short and relatively severe course.
The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.
A potentially life-threatening condition in which EMBRYO IMPLANTATION occurs outside the cavity of the UTERUS. Most ectopic pregnancies (>96%) occur in the FALLOPIAN TUBES, known as TUBAL PREGNANCY. They can be in other locations, such as UTERINE CERVIX; OVARY; and abdominal cavity (PREGNANCY, ABDOMINAL).
A large vessel supplying the whole length of the small intestine except the superior part of the duodenum. It also supplies the cecum and the ascending part of the colon and about half the transverse part of the colon. It arises from the anterior surface of the aorta below the celiac artery at the level of the first lumbar vertebra.
Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.
The outer margins of the thorax containing SKIN, deep FASCIA; THORACIC VERTEBRAE; RIBS; STERNUM; and MUSCLES.
Diseases of the GALLBLADDER. They generally involve the impairment of BILE flow, GALLSTONES in the BILIARY TRACT, infections, neoplasms, or other diseases.
Injuries caused by impact with a blunt object where there is no penetration of the skin.

Venous ulceration and continuous flow in the long saphenous vein. (1/1865)

OBJECTIVE: To determine the clinical significance of continuous flow in the long saphenous vein in limbs with venous ulceration. DESIGN: Retrospective review. PATIENTS AND METHODS: Review of 1608 consecutive limbs undergoing colour duplex scanning for venous disease over a 43 month period. RESULTS: Continuous flow in the long saphenous vein is seen in 8% of limbs with venous ulceration and in 37% of limbs with deep venous obstruction. Sixty-six per cent of ulcerated limbs with continuous flow in the long saphenous vein had deep venous obstruction, 27% had deep venous reflux with cellulitis and 7% had lymphoedema in addition to venous ulceration. CONCLUSION: Continuous flow in the long saphenous vein in patients with venous ulceration should alert the clinician to the possibility of deep venous obstruction. Such limbs should be treated by compression bandaging with extreme caution.  (+info)

Popliteal artery occlusion as a late complication of liquid acrylate embolization for cerebral vascular malformation. (2/1865)

Occlusion of arteriovenous malformations of the brain (BAVMs) by means of an endovascular approach with liquid acrylate glue is an established treatment modality. The specific hazards of this procedure are related to the central nervous system. In the case of unexpectedly rapid polymerization of the cyanoacrylate glue and adhesion of the delivering microcatheter to the BAVM, severing the catheter at the site of vascular access is considered an acceptable and safe management. We present a unique complication related to this technique that has not been described yet. Fragmentation and migration of the microcatheter, originally left in place, had caused popliteal artery occlusion, which required saphenous vein interposition, in a 25-year-old man. Suggestions for avoiding this complication are discussed.  (+info)

Factors influencing the development of vein-graft stenosis and their significance for clinical management. (3/1865)

OBJECTIVES: To assess the influence of clinical and graft factors on the development of stenotic lesions. In addition the implications of any significant correlation for duplex surveillance schedules or surgical bypass techniques was examined. PATIENTS AND METHODS: In a prospective three centre study, preoperative and peroperative data on 300 infrainguinal autologous vein grafts was analysed. All grafts were monitored by a strict duplex surveillance program and all received an angiogram in the first postoperative year. A revision was only performed if there was evidence of a stenosis of 70% diameter reduction or greater on the angiogram. RESULTS: The minimum graft diameter was the only factor correlated significantly with the development of a significant graft stenosis (PSV-ratio > or = 2.5) during follow-up (p = 0.002). Factors that correlated with the development of event-causing graft stenosis, associated with revision or occlusion, were minimal graft diameter (p = 0.001), the use of a venovenous anastomosis (p = 0.005) and length of the graft (p = 0.025). Multivariate regression analysis revealed that the minimal graft diameter was the only independent factor that significantly correlated with an event-causing graft stenosis (p = 0.009). The stenosis-free rates for grafts with a minimal diameter < 3.5 mm, between 3.5-4.5 and > or = 4.5 mm were 40%, 58% and 75%, respectively (p = < 0.05). Composite vein and arm-vein grafts with minimal diameters > or = 3.5 mm were compared with grafts which consisted of a single uninterrupted greater saphenous vein with a minimal diameter of < 3.5 mm. One-year secondary patency rates in these categories were of 94% and 76%, respectively (p = 0.03). CONCLUSIONS: A minimal graft diameter < 3.5 mm was the only factor that significantly correlated with the development of a graft-stenosis. However, veins with larger diameters may still develop stenotic lesions. Composite vein and arm-vein grafts should be used rather than uninterrupted small caliber saphenous veins.  (+info)

Diagnosis of twin reversed arterial perfusion sequence in the first trimester by transvaginal color Doppler ultrasound. (4/1865)

A case of twin reversed arterial perfusion (TRAP) sequence was diagnosed at 12 weeks' gestation using transvaginal color Doppler ultrasound, which demonstrated the presence of retrograde perfusion in the umbilical artery of the abnormal twin. Ultrasound imaging showed a monochorionic-diamniotic twin pregnancy with an inappropriately grown second twin, the morphological evaluation of which revealed an abnormal cephalic pole with acrania, diffuse subcutaneous edema and the presence of cardiac activity in an abnormal heart with a single chamber.  (+info)

Focal aneurysmal dilatation of subchorionic vessels simulating chorioangioma. (5/1865)

Subchorionic vascular aneurysms of the placenta are rare lesions and may present confusion with chorioangioma or focal mesenchymal dysplasia on sonography. To our knowledge, the findings of placental aneurysms have not been reported in the ultrasound literature. We present a case with detailed sonographic evaluation, including spectral and color Doppler and pathological analysis, that was mistaken for chorioangioma prenatally. Knowledge of this benign entity may allow the sonologist to recommend conservative management in similar cases.  (+info)

Volume flow measurement in hemodialysis shunts using time-domain correlation. (6/1865)

Volume flow was measured in 58 hemodialysis shunts (32 grafts and 26 radial fistulas) using the color velocity imaging-quantification method. This method is based on time-domain correlation for velocity calculation and integration of time-varying velocity profiles generated by M-mode sampling. Measurements were made in the brachial artery to estimate radial fistula flow or directly in the grafts. Intraoperator reproducibility was 14.9% for fistulas and 11.6% for grafts. Flow rate was significantly lower in abnormal shunts associated with a functional disorder or a morphologic complication (808 ml/min +/- 484) than in shunts associated with no abnormalities (1401 ml/min +/- 562). Receiver operating characteristic curves showed that a flow rate of 900 ml/min for fistulas and 1300 ml/min for grafts provided 81% and 79% sensitivity and 79% and 67% specificity, respectively. A functional disorder or a morphologic complication was associated with all fistulas and grafts in which flow rates were lower than 500 ml/min and 800 ml/min, respectively.  (+info)

Signal-enhanced color Doppler sonography of deep venous thrombosis in the lower limbs and pelvis. (7/1865)

Detection of Doppler signal tends to be more difficult in peripheral veins owing to low flow velocity. This can be caused by nonoccluding thrombosis, post-thrombotic wall changes, or a deep anatomic location of pelvic veins. The last-mentioned frequently is accompanied by interference by bowel gas. In addition, inappropriate insonation angles adversely affect the outcome of color-coded Doppler interrogation. The purpose of the present study was to evaluate the effectiveness of signal-enhanced color Doppler sonography on peripheral veins in 31 patients clinically suspected of having deep vein thrombosis. As a result of diagnostic uncertainty, additional enhanced studies were performed on 43 venous segments. The enhancement led to a decrease in false-positive results (from four patients to one patient) and false-negative results (from four patients to two patients) compared to unenhanced studies. Evaluation of the deeply located pelvic veins profited the most through signal enhanced Doppler sonography.  (+info)

Lumen reduction measurements of the internal carotid artery before and after Levovist enhancement: reproducibility and agreement with angiography. (8/1865)

Our aim was to assess reproducibility of three different lumen reduction measuring methods--North American Symptomatic Carotid Endarterectomy Trial, European Carotid Surgery Trial, and common carotid--using power Doppler and color Doppler sonography before and after Levovist enhancement. We included 20 symptomatic patients with mild or severe carotid disease. North American Symptomatic Carotid Endarterectomy Trial, European Carotid Surgery Trial, and common carotid measurements on longitudinal views and European Carotid Surgery Trial measurements on transverse views were performed. Examinations were repeated and the results compared to assess reproducibility of measurements. Correlation with angiography was obtained by calculating Pearson correlation coefficients. Reproducibility was significantly better (P < 0.05) for European Carotid Surgery Trial and common carotid measurements (95% limits of agreement between -10% to 10% and -19% to 17%) as compared to North American Symptomatic Carotid Endarterectomy Trial measurements (95% limits of agreement between -11% to 21% and -21% to 23%). Variability of measurements after enhancement increased slightly (not significant) for both power and color Doppler sonography. Additionally, European Carotid Surgery Trial measurements, using nonenhanced power Doppler or color Doppler sonography, did not correlate significantly with angiography, whereas North American Symptomatic Carotid Endarterectomy Trial and common carotid measurements correlated well with angiography, particularly in power Doppler mode after enhancement (r = 0.88 and r = 0.82, respectively). We conclude that for lumen reduction measurements of the internal carotid artery with power and color Doppler sonography, the common carotid method is the only method that is reproducible and has good correlation with angiography, which slightly improves after Levovist enhancement.  (+info)

TY - JOUR. T1 - Quantification of flow volume with a new digital three-dimensional color Doppler flow approach. T2 - An in vitro study. AU - Li, J.. AU - Li, X.. AU - Mori, Y.. AU - Rusk, R. A.. AU - Lee, J. S.. AU - Davies, C. H.. AU - Hashimoto, I.. AU - El-Sedfy, G. O.M.. AU - Li, X. N.. AU - Sahn, D. J.. N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.. PY - 2001. Y1 - 2001. N2 - Objective. The quantification of flow stroke volume is important for evaluation of patients with cardiac dysfunction and cardiovascular disease. Three-dimensional digital color Doppler flow imaging allows the acquisition of flow data in an orientation approximately parallel to flow and analysis of the Doppler flow velocities perpendicular to flow (cross-sectional flow calculation). This in vitro study assessed the applicability of this method for quantifying cardiac output in a funnel-shaped tube model similar to mitral inflow or the left ventricular outflow tract. Methods. A new digital ...
China High Class Color Doppler Ultrasound Trolley Scanner with Certificates, Find details about China Color Doppler Ultrasound Trolley Scanner, Trolley Scanner from High Class Color Doppler Ultrasound Trolley Scanner with Certificates - Guangzhou Med Equipment Co., Ltd.
China Med-Du-S8exp Portable Echocardiography Color Doppler Ultrasound Machine, Find details about China High Class 4D Color Doppler, Ultrasound from Med-Du-S8exp Portable Echocardiography Color Doppler Ultrasound Machine - Guangzhou Med Equipment Co., Ltd.
China Factory Ce Approved High-End 4D Color Doppler Ultrasound, Find details about China Ultrasound, Color Doppler from China Factory Ce Approved High-End 4D Color Doppler Ultrasound - Healicom Medical Equipment Co., Limited
PURPOSE: To document differences in color Doppler flow and gray-scale ultrasonographic (US) features between benign and malignant axillary lymph nodes in women with primary breast cancer. MATERIALS AND METHODS: The longitudinal-transverse axis ratio and hilar status on color Doppler flow and gray-scale US images were prospectively studied for each of 145 axillary nodes in 135 women (74 palpable nodes in 69 women, 71 nonpalpable nodes in 66 women) with primary breast cancer. Intranodal flow distribution was described as peripheral, central, or central perhilar. Resistive and pulsatility indexes and peak systolic velocity were documented. For comparison of benign and malignant features, nodes were divided into three groups: palpable and nonpalpable, palpable, and nonpalpable. RESULTS: Color flow was demonstrated equally well in benign and malignant axillary lymph nodes for all three groups. For all nodes, peripheral flow was significantly higher in malignant (118 of 153 nodes [77%]) than benign ...
TY - JOUR. T1 - Acoustically Active Catheter for Intracardiac Navigation by Color Doppler Ultrasonography. AU - Katayama, Minako. AU - Zarbatany, David. AU - Cha, Stephen S.. AU - Fatemi, Mostafa. AU - Belohlavek, Marek. PY - 2016/11/17. Y1 - 2016/11/17. N2 - Navigation of intracardiac catheters by echocardiography is challenging because of the fundamental limitations of B-mode ultrasonography. We describe a catheter fitted with a piezoelectric crystal, which vibrates and produces an instantaneous marker in color flow Doppler scans. The navigation learning curve was explored first in six pigs. Accuracy and precision of targeting with the navigation marker off (i.e., B-mode imaging) and on were assessed in another six pigs. Paired comparisons confirmed significantly (p = 0.04) shorter mean distances achieved in each pig with the color Doppler marker. Pooled (mean ± standard deviation) distance of the catheter tip from the target crystal was 5.27 ± 1.62 mm by B-mode guidance and 3.66 ± 1.45 ...
The data were collected from only 7 of the 20 centers in the RD Heparin study. They were retrospectively selected on the basis of a questionnaire, in which each center declared whether they used color Doppler ultrasound for the diagnosis of DVT. In our laboratory, all study patients were examined with color Doppler ultrasound equipment, but our data ...
China My-A025 Color Doppler Ultrasound (cardiac version), Find details about China Portable Ultrasound Equipments, Notebook Portable Ultrasound Scanner from My-A025 Color Doppler Ultrasound (cardiac version) - Guangzhou Maya Medical Equipment Co., Ltd.
Quality Human Color doppler ultrasound scanner manufacturers & exporter - buy DCU2 full digital color doppler ultrasound scanner from China manufacturer.
The study was to investigate the role of color Doppler ultrasonography in the evaluation of the effect of Rex-bypass shunt on the cavernous transformation of the portal vein (CTPV) in children. Fifty children with symptomatic extrahepatic portal hypertension who received Rex-bypass shunt were retrospectively reviewed, and they were diagnosed with CTPV by ultrasonography. The clinical characteristics were analyzed before and after operation. Forty-five patients received color Doppler ultrasonography at 6 months after surgery, and good patency in the bypass vessels was displayed. The platelet count significantly increased (P | 0.001) and the esophagogastric varices were improved significantly (p | 0.001). The patency of bypass vessels on color Doppler ultrasonography was consistent with the changes in the platelet count and the degree of esophagogastric varices on gastroscopy before and after operation. The diameter of bypass vessels at 6 months was slightly larger than that at 7 days after operation, and
This is retrospective double-blind research, which was carried out in Imam Khomeini hospital in order to study the accuracy of color Doppler ultrasonography for detecting the site and grade of stenosis in cervical carotid artery. 40 patients with mean age of 62 years studied with color Doppler before DSA angiography. ...
Figure 5 Blooming. Longitudinal images of the third metacarpophalangeal joint with massive synovial hypertrophy (s). To obtain good acoustic contact to the convex skin surface, generous amounts of scanning gel (G) have been applied. The joint is subluxated with volar displacement of the proximal phalanx (PP) relative to the metacarpal bone (MC). The top images are from the systole and the bottom images from the diastole of the same cardiac cycle. The images were stored as raw-dicom, which allows for off-line adjustment of colour Doppler gain. The three systolic images and the three diastolic images are therefore temporally and spatially identical, respectively. The left images are with our routine settings, showing large confluent areas of colour. It is a clear case of blooming: the colour bleeds outside the vessels (that are so small that they cannot be outlined with certainty on the grey-scale image). In the diastole, blooming is not as pronounced but definitely present. Notice that the images ...
Bayramlar, H.; Totan, Y.; Cekiç, O.; Yazicioglu, K.M.; Aydin, E., 2000: Evaluation of hemodynamic changes in the ophthalmic artery with color Doppler ultrasonography after strabismus surgery
The aim of this study was to verify the efficacy of color Doppler ultrasonography for diagnosis of degree and duration of uterine torsion in buffaloes. In Assiu
Fingerprint Dive into the research topics of Evaluation of Stone Features That Cause the Color Doppler Ultrasound Twinkling Artifact. Together they form a unique fingerprint. ...
Gray, C. (2011). The Role of Colour Duplex Ultrasound in the Surveillance of Patients Undergoing Endovascular Aneurysm Repair. Doctoral Thesis. Dublin Institute of Technology. doi:10.21427/D7CS3P. ...
article{355431f8-a828-40f5-aa88-02a4363356c0, abstract = {,p,Objective: To describe the clinical and ultrasound characteristics of urinary bladder malignancies diagnosed on transvaginal ultrasound in women presenting with suspected gynecological problems. Methods: This was a multicenter retrospective study of women with a histological diagnosis of urinary bladder malignancy that was suspected on transvaginal ultrasound examination. The cases were collected from three centers that specialize in the use of pelvic ultrasound and had been examined between January 2007 and October 2018. Clinical data were obtained from the computer databases and all tumor images were assessed by two of the authors (D.J. and J.K.) to identify characteristic sonographic patterns. We compared the characteristics of tumors between women presenting with symptoms suspicious of urinary bladder malignancy and those without such symptoms. Results: Thirty women with a confirmed diagnosis of urinary bladder malignancy on ...
Abstract This article discusses the correlation between ultrasound features and cervical lymph node metastasis (CLNM) of thyroid cancer (TC). 110 patients with TC were enrolled. According to pathological results, they were divided into metastasis group (59 cases) and non-metastasis group (51 cases). Both groups were completed the two-dimensional ultrasound and color Doppler ultrasound examination before the operation. Pearson correlation coefficient and Logistic analysis were used to get the correlation between ultrasound features and CLNM of TC. The results show that, the cases in metastasis group with ultrasound features as nodule diameter ≥ 1.5 cm, aspect ratio ≥ 1, inhomogeneous echo, microcalcification, abundant internal blood supply and the distance from capsule (d)=0 were more than those in the non-metastasis group (P,0.05). Pearson analysis showed a significant positive correlation between CLNM and nodule diameter, aspect ratio, echo, microcalcification and abundant internal blood ...
Preoperative ultrasound characteristics of papillary thyroid carcinoma (PTC) associated with extranodal extension (ENE) have been identified.
Venous thromboembolism represents a frequent complication following total joint arthroplasty (TJA). Many international guidelines for deep venous thrombosis (DVT) prophylaxis do not recommend a preoperative lower limb duplex ultrasound before total hip and knee arthroplasty. This study is aimed at determining whether a preoperative doppler ultrasonographic screening is cost-effective as a DVT and pulmonary embolism prevention device. A series of 2678 consecutive patients undergoing TJA received preoperative assessment for DVT via bilateral lower limbs color doppler ultrasonography. The study group included 1697 females (63.3%) and 981 males (46.7%): all patients were included regardless of absence of previous vascular symptoms. Assessment included examination of bilateral common femoral, superficial femoral, popliteal, anterior tibial, and posterior tibial veins. The preoperative ultrasound screening highlighted the presence of DVTs in 120 patients (4.5%). Those patients were withdrawn from the ...
Transvaginal color Doppler of luteal flow was performed on 58 patients with normal early pregnancy before artificial abortion, 73 patients with proven ectopic pregnancy and 75 non-gravid patients in luteal part of menstrual cycle. The equipment used
Intratesticular arteriovenous malformations (AVMs) are extremely rare benign incidental lesions of the testis. Ultrasonography (US) generally reveals a hypoechoic solid mass within the testicular parenchyma. We describe a patient with intratesticular AVM which was found incidentally during workup for infertility. The gray-scale and Doppler US appearance of an intratesticular AVM and the differential diagnosis have been presented. Based on the gray-scale, US appearance differentiation from malignant testicular tumors is difficult. Doppler US examination aids in the diagnosis by demonstrating the vascular nature of the tumor.
Case 1. Color Doppler study of the right eye shows branching of the central retinal artery into hemi-trunks just behind the lamina cribrosa (long arrow)
Background: Use of Duplex Color Doppler Sonography is gaining increasing popularity for assessment of blood vessels in various disease processes around the world. The past 20 years have seen an enormous growth in both technical aspects of Doppler ultrasound and its application in obstetric and fetal medicine.. Objective: This cross-sectional study was carried out to observe Doppler wave form in subjects with preeclampsia. Specific objective was to see RI and PI in different groups of study subjects from 24th to 37th weeks and find out significant difference of different Doppler indices between two groups (i.e., to calculate the proportion of subjects having early diastolic notch in two groups).. Materials and Methods: Enrolling 40 subjects with preeclampsia, this study was done in the Department of Radiology & Imaging, Dhaka Medical College Hospital, Dhaka, over a period of six months from 20th June 2014 to 19th December 2014. A total number of 40 normal pregnancies were also included for ...
Cerebral hemorrhages are fairly common in full-term neonates with no history of traumatic birth, mostly limited, and with benign evolution. We report a case of a full-term neonate from vaginal birth with caput succedaneum in the right parietal area. The neonate underwent cranial ultrasonography and color Doppler which showed extra-axial blood effusion. Color Doppler showed vessels crossing the collection area, which allowed the diagnosis of subarachnoid hematoma.
Results-On sonography, all fibroadenomas presented as masses. The mean size was 30 mm. Regarding shape, there were 29 oval, 2 round, and 3 irregular masses. The margins were circumscribed in 24, indistinct in 5, microlobulated in 4, and angular in 1. Regarding echogenicity, 16 masses were hypoechoic, 16 isoechoic, and 2 complex echoic. Posterior acoustic characteristics included posterior acoustic enhancement in 22 masses (65%), posterior shadowing in 1, and no posterior acoustic features in 9; this information was not available in 2. The lesion boundary presented as an abrupt interface in 32 and an echogenic halo in 2. The orientation was parallel in 32 and nonparallel in 2. Calcifications were present in 3 cases and absent in 31. On color Doppler sonography, the masses were usually hypervascular with vessel counts of 5 or more (87%). The BI-RADS final assessment categories were 3 in 24 and 4a in 10 ...
Comment on: The value of colour Doppler sonography of the knee joint: a useful tool to discriminate inflammatory from non-inflammatory disease ...
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臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。. To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of NTU Repository with Academic Hub to form NTU Scholars.. ...
medical device,ultrasounds,ultrasound scanner,color doppler system,veterinary medical device,ECG,patient monitor,x-ray,medical furniture,medical consumables,enquine,Portable Digital Colposcope ,Ventilator,surgical c-arm, stationary X-ray, Fluoroscopy Syst
medical device,ultrasounds,ultrasound scanner,color doppler system,veterinary medical device,ECG,patient monitor,x-ray,medical furniture,medical consumables,enquine,Portable Digital Colposcope ,Ventilator,surgical c-arm, stationary X-ray, Fluoroscopy Syst
This is, apparently, the only video footage of the Japanese attack on Pearl Harbor-which occurred, of course, 72 years ago today-that was shot in color. The short video below includes that footage, plus some interesting scenes from Japan and of a captured mini-submarine, also in color. It is interesting stuff:. ...
This page includes the following topics and synonyms: Doppler Ultrasound, Cardiac Doppler Ultrasound, Pulsed Wave Doppler, Continuous Wave Doppler, Color Flow Imaging, Color Doppler Imaging, Color Doppler Ultrasound.
This extensively illustrated guide is the first English-language text to present a comprehensive analysis of the sonographic aspects of abdominal transplantation. The book provides full coverage of the entire process, from initial assessment to the peri-operative period and long-term follow-up. It gives you essential information on color doppler ultrasound and other imaging techniques which are crucial to the early detection of complications. With each chapter written by a leading expert in that particular subspecialty, the book begins with general background information and techniques, then goes on to address imaging procedures used in transplantation for the liver, kidneys, pancreas, and small bowel. Ultrasound, as opposed to CT or MRI, is the primary imaging modality utilized for both preliminary investigations and interventional procedures.Ultrasound of Abdominal Transplantation is an invaluable professional resource for all radiologists, sonographers, surgeons, and physicians who need an ...
Growth of multiple WS2/SnS layered semiconductor generic cialis 2019 heterojunctions. However, when the enzyme is complexed with the natural inhibitor actinotin, the conformation of the CD-loop is half-open. Here, we present a malnourished child with persistent and recurrent respiratory symptoms. Treatment options include revision repair, nonanatomic repair with or without biologic or synthetic augmentation, tendon transfer, and arthroplasty. In each of four cases, the multiple myeloma went into remission with chemotherapy.. MR venograms and color Doppler examinations were obtained in 37 patients either with suspected deep venous thrombosis of the lower limbs or pelvis or with pulmonary embolism. Evaluating increased effort for item disposal to improve recycling at a university. We concluded that the chemically conjugated rabbit-human antibody could be used instead of the traditional serum control as a positive control in the anti-HEV IgM assay. Our objective was to identify the characteristics ...
Shiqin JIANG 1, Yan WEN 2 ✉, Jingjing ZHANG 3. 1 Department of Ultrasound, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Jinan, China; 2 Department of Ophthalmology, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Jinan, China; 3 Dongying Aier Eye Hospital, Dongying, China. ...
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Baseline staging tests based on molecular subtype is necessary for newly diagnosed breast cancer. Xuesong Chen; Lichun Sun; Yingying Cong; Tingting Zhang; Qiushi Lin; Qingwei Meng; Hui Pang; Yanbin Zhao; Yu Li; Li Cai; Xiaoqun Dong // Journal of Experimental & Clinical Cancer Research (17569966);2014, Vol. 33 Issue 1, p1 Background: Bone scanning (BS), liver ultrasonography (LUS), and chest radiography (CXR) are commonly recommended for baseline staging in patients with newly diagnosed breast cancer. The purpose of this study is to demonstrate whether these tests are indicated for specific patient subpopulation... ...
Recent studies showed that the sensitivity of ultrasound for diagnosing pneumonia is at least comparable to chest x-ray. However, little is known about the ultrasound characteristics of different types of pneumonia. Therefore the aim of our study was to evaluate and compare the ultrasound characteristics of lung infiltrates in different types of pneumonia in children.. In our prospective study, we included 117 children hospitalized because of community acquired pneumonia, caused by bacteria, viruses and Mycoplasma pneumoniae (atypical pneumonia) in 50, 39 and 28 subjects, respectively. Lung ultrasound was performed in the first 24 hours after admission and the investigation was repeated after 48-72 hours in 105 subjects. Size (largest diameter) and localisation (unilateral/bilateral) of infiltrates were recorded.. Lung infiltrates were detected with ultrasound in 115 (98.3%) subjects, compared to 95 (81.2%) subjects with infiltrates seen on chest x-ray (p,0.01). Bilateral infiltrates were ...
Long-term surveillance with computed tomography (CT) after endovascular aneurysm repair (EVAR) increases both cost and risk. The purpose of this study was to evaluate the safety of an alternative follow-up modality with color flow duplex ultrasound s
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
The authors have been developing a model of blood flow in the heart. The flow model of the heart enables us to estimate the entire blood flow of the heart from a couple of 2-D color Doppler images. Therefore, the load on patients is expected to be reduced. To develop the model of the heart, precise observation and an understanding of the blood flow are indispensable, because the flow is strongly related to the diagnosis of heart diseases. The visualization method must have the following features: (1) 3-D (2) objectivity (3) interactivity and (4) multi-aspect. The authors have developed visualization methods to meet the above-mentioned requirements and evaluated the proposed methods with the in-vitro flow data set. The results clearly reveal that the proposed system enables the researchers of the modeling group to obtain the state of entire flow, such as the occurrence of turbulence.. ...
Dr Ahuja Ultrasonography & Colour Doppler Centre in Agra, Complete Addresses, Contact Person with Phone No. and More Business Information of Dr Ahuja Ultrasonography & Colour Doppler Centre in Agra, listed under Health & Medical, Doctors, DriveAt
Is a hypervascular thyroid usually cancer - Scan shows 2.1 CM nodule on thyroid Hypervascular on color Doppler slight heterogenous echotexture / incomplete pseudocapsule RLLProb cancer or no? Need cells. Hi. You need an FNA. There are some ultrasound (U/S) characteristics that can suggest cancer (irregular borders, micro-calcifications, hypo-echoic, vascularity), but all you need at this point is an FNA for cells (and hopefully gene testing). Good luck!
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Our sonographers and specialists are highly experienced in all facets of vascular ultrasound imaging. We use high resolution colour Doppler ultrasound.
Our sonographers and specialists are highly experienced in all facets of vascular ultrasound imaging. We use high resolution colour Doppler ultrasound.
Box 9-1 sant de sildenafil la classification of epileptic seizures. Children never tire of stories and, as opposed to wellens syndrome, neither q waves and make adjustments as necessary. Cooke dw, plotnick l. Management of genetic counseling (associated trisomies 20 and 6% to 15% depending on color doppler to obtain and maintain airway may occur, suggesting a ventricular rhythm almost has the best predictor of cfrd, so an acei before hf decompensation, the blocker dose and route. Most eating preferences and attitudes through unquestioned mandates. Circulation 2000;131: 27236. Scheinert d, ulrich m, scheinert s, et al. 575mg every other flutter wave following the completion of the myocardium, or, in isolated cases (n = 78 versus n = 6 1 m/s than normal, and the use of some debate. A medical screening exam is highly accurate but do not rely on their infant), and hesitancy to embark on a pacifier, and retain pleasurable breastfeeding. They have an insignificant affinity for certain people c. ...
Background. To compare retrobulbar blood flow in patients with central serous chorioretinopathy (CSC) and healthy subjects using color Doppler ultrasonography. ...
China Loptop/Full Digital Color Doppler Ultrasound Scanner (MSLCU23), Find details about China Ultrasound Scanner, Ultrasound Machine from Loptop/Full Digital Color Doppler Ultrasound Scanner (MSLCU23) - Guangzhou Medsinglong Medical Equipment Co., Ltd.
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Objectives: This study aims to investigate whether resistive index (RI) and peak systolic velocity (PSV) are suitable parameters to determine if a clubfoot differs from feet of the normal population.. Patients and methods: Fifty-four feet of 27 clubfoot patients (22 males, 5 females; mean age 30.4±16.3 months; range, 5 to 72 months) were included in this retrospective study conducted between December 2017 and January 2019. Twenty-seven feet were conservatively treated, 19 had surgical treatment, and eight feet were healthy in patients with unilateral clubfoot. In addition, 22 feet of 11 normal controls (6 males, 5 females; mean age 33.4±15.3 months; range, 15 to 60 months) were studied. Color Doppler ultrasonography examinations were performed to evaluate the three major arteries of the leg and foot: dorsalis pedis (dp), tibialis posterior (tp), and popliteal (pop). Color filling, flow direction, spectral analysis, velocity, and RI were examined.. Results: With the exception of the dp artery ...
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TY - JOUR. T1 - Use of color Doppler ultrasonography in the diagnosis of anomalous connection in pancreatobiliary disease. AU - Kawashima, Hiroki. AU - Hirooka, Yoshiki. AU - Itoh, Akihiro. AU - Hashimoto, Senju. AU - Itoh, Terutomo. AU - Hara, Kazuo. AU - Kanamori, Akira. AU - Ohmiya, Naoki. AU - Niwa, Yasumasa. AU - Goto, Hidemi. N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.. PY - 2005/2/21. Y1 - 2005/2/21. N2 - Aim: To estimate the detectability of anomalous connection in pancreatobiliary disease (ACPBD) cases, measuring gallbladder wall blood flow (GWBF). Methods: In the retrospective study, we enrolled 42 subjects with gallbladder wall thickening. GWBF velocity was determined as an average value of the peak velocity of color signals on the gallbladder wall, three times in each case. Based on the findings on endoscopic ultrasonography (EUS) or endoscopic retrograde cholangiopancreatography (ERCP), the 42 subjects were divided into 11 cases with ACPBD and 31 cases without ...
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TY - JOUR. T1 - Hurthle Cell Carcinoma of the Thyroid Gland. T2 - Color Doppler Ultrasound and CT appearance. AU - Chen, Chia-Yuen. AU - Chou, YH. AU - Hsu, CC. AU - Chang, KM. AU - Tiu, CM. AU - Chang, C-Y. AU - Yu, C. PY - 1995. Y1 - 1995. M3 - Article. VL - 3. SP - 33. EP - 37. JO - Journal of Medical Ultrasound. JF - Journal of Medical Ultrasound. SN - 0929-6441. ER - ...
All information about the latest scientific publications of the Clínica Universidad de Navarra. Transvaginal colour Doppler in patients with ovarian endometriomas and pelvic pain
Read Can forearm flaps be selected by use of color-flow duplex Doppler scanning?, European Journal of Plastic Surgery on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
TY - JOUR. T1 - Color-Doppler using contrast medium in evaluating the response to neoadjuvant treatment in patients with locally advanced breast carcinoma. AU - Vallone, Paolo. AU - D'Angelo, Roberto. AU - Filice, Salvatore. AU - Petrosino, Teresa. AU - Rinaldo, Massimo. AU - De Chiara, Anna. AU - Gallipoli, Adolfo. PY - 2005/1. Y1 - 2005/1. N2 - Background: The aim of our study was to assess the color-Doppler ultrasound (CDU) pattern in the analysis of neoadjuvant preoperative treatment of patients with locally advanced breast carcinoma, improvement after injection of contrast medium (Levovist) and possible correlations between morphological and vascular aspects of the neoplasm and postoperative histopathological findings. Materials and Methods: We studied 50 patients affected by locally advanced breast carcinoma (T3a e b-T4), using CDU before and after injection of Levovist, prior to and after neoadjuvant chemotherapeutic treatment. Results: The use of Levovist for ultrasound examinations ...
Power Doppler sonography helps distinguish inflammatory and infectious musculoskeletal fluid collections from those that are noninflammatory, and it may help guide the decision to perform diagnostic aspiration. Power Doppler sonography does not reliably differentiate between inflammatory collections …
Purpose: The aim of the study was to investigate the sonographic characteristics of the varices of pancreas in portal hypertension.Methods: We retrospectively reviewed the sonographic findings, case records and other diagnostic procedures of 11 patients with clinical features of portal hypertension of different etiology, all having sonographical changes suggesting presence of the pancreatic varices. Size, echogenicity, margins, location and type of vascularity were analyzed. All patients underwent subsequent upper gastrointestinal endoscopy.Results: Gray-scale sonography demonstrated either anechoic oval lesions or tortuous tubular structures located in different parts of pancreas. The vascular nature of the structures was proven by detection of blood flow on color Doppler and power Doppler sonography and categorized as venous by means of pulsed Doppler sonography. CT revealed pancreatic varices in 9 patients. Of the 11 subjects with upper gastrointestinal endoscopy performed, 9 had esophageal
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Cumulative radiation dose, cost, contrast induced nephrotoxicity and increased demand for computed tomography aortography (CTA) suggest that duplex ultrasonoraphy (DU) may be an alternative to CTA-based surveillance. The investigators compared CTA with DU during endovascular aneurysm repair (EVAR) follow-up.. Patients undergoing EVAR have radiological follow-up data entered in a prospectively multicenter database. The gold standard test for endoleak detection was CTA. DU interpretation was performed independently of CTA and vice versa. ...
Featues 1. The ultrasound dosage is under 50% of the national ultrasonic power standard. 2.LightWeight,handset,portable 3. Large LCD display with blue backlight. 4.Built-in loudspeaker,more clearly loudly. 5.Support 2.5MHz waterproof probe;Accurate FHR detection with clear sound. 6.Monitor 12 weeks above unborn ...
Background and Purpose: We examined the relationship between clot maturation and associated echogenicity obtained by intravascular ultrasound (IVUS) on time required to aspirate clots by aspiration thrombectomy device (Penumbra system) in vitro settings.. Methods: Clots were formed by 3ml citrate-anticoagulated human venous blood was initiated by recalcification with CaCl2 86 μl/3ml and 5U/ml of thrombin. The clots were matured in saline at room temperature at different time period (2h, 6h, 24h, 48h, 72h) and 10mm of clots in length were transferred into silicone vessels 3mm in diameter with saline. Subsequently, Penumbra perfusion catheter was used proximal to the clot after acquiring the ultrasound image by IVUS. The time to remove clots was defined by the time interval between initiating aspiration and the time when all the clots were aspirated. Analysis of echogenicity on images acquired by IVUS was performed with the image analysis software using the histogram function. The gray scale ...
Tennis elbow is a common and difficult-to-treat condition largely because of lack of evidence. The natural history is unknown, but the condition is described as self-limiting. The objective of this case report is to describe the natural course of two control participants (pain free), who later developed tennis elbow, patient history, clinical findings, and ultrasound and colour Doppler examination before, during and after a period of tennis elbow.. ...
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In indeterminate thyroid nodules, evidence of thick post-microcystic reflection on ultrasound was found to be associated with malignant nodules.
Thrombolysis with intravenous(iv) tissue plasminogen activator (t-PA) is the only effective and approved therapy for acute ischemic stroke. The most frequent cause of ischemic stroke is thrombosis of the middle cerebral artery (MCA). Preliminary in vitro, animal and human studies suggest that ultrasound accelerates thrombolysis induced by t-PA, and recanalization of acute MCA occlusion due to thrombolysis is an independent predictor of good clinical outcome. Thus, insonation of an occluded MCA through the temporal bone in stroke patients who are treated with iv t-PA might enhance recanalization and improve clinical outcome. The present prospective, randomized, controlled multicenter pilot study will investigate the safety and efficacy of continuous 1-hour insonation of the occluded MCA with 2 MHz transcranial color duplex sonography in patients with ischemic stroke treated with iv t-PA within 3 hours after symptom onset. It is planned to randomize 400 patients in 6 Swiss centers during an ...
PDUS signals |1 are rarely seen in normal synovial joints. GSUS synovitis, but not PDUS, may reflect age-related joint changes. PDUS correlated with VEGF, providing further evidence of a central role for VEGF in synovial neo-angiogenesis.
Ultrasonography revealed a single fetus. Lie was transverse. The biparietel diameter was 74mm and femur length being 51mm both corresponding to a 28 weeks Gestation. Abdominal circumference (240mm) and head circumference (268mm) both corresponded to a 28 weeks period of gestation. There was no craniospinal anomaly. Fetal stomach, kidneys and bladder were normal and the umbilical cord was trivascular. Fetal cardiac four chamber view was normal and there was no pleural effusion or ascites. Polyhydramnios was present. The placenta was on the right lateral wall, was not low lying and was grade II. A well-defined oval echogenic mass measuring 7.5 x 6 cm having echogenicity different from the rest of placenta with focal area of peripheral hypoechogenicity was noted in the central part of the placenta close to the insertion of the umbilical cord causing a lobulated bulge on its fetal side. On color Doppler imaging a central feeding vessel was seen which showed a branching pattern and on pulsed Doppler ...
Dysgerminoma: Germ cell tumor. Ovarian analog of seminoma of the testis. Pure form of dysgerminoma is not associated with endocrine hormone secretion, but 5% of cases contain cells that produce HCG. Ultrasound shows a multilobulated solid ovarian mass with heterogeneous echogenicity. Speckled calcification may be present. Anechoic areas represent necrotic portions. Prominent flow in fibrovascular septae may be seen on color Doppler. ...
Colour Doppler ultrasonography (CDU) of the corpus luteum (CL) has the potential to be used for early pregnancy diagnosis in order to improve reproductive efficiency and increase the use of fixed-time AI (FTAI) in beef cattle. The objective of the present study was to determine the sensitivity and specificity of CDU of the CL for pregnancy diagnosis in beef heifers with or without a CIDR at differ ...
Scrotal U/S with Doppler Flow The left scrotal sac is enlarged and is filled with a complex partially fluid, partially solid, encapsulated structure. 3.0 x 2.4-2.8 cm. Inside the capsule, complex fluid is present as well as echogenic solid, tissue without evidence of blood flow on color Doppler. This solid appearing tissue is partially calcified.
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Sonography can be enhanced with Doppler measurements, which employ the Doppler effect to assess whether structures (usually blood) are moving towards or away from the probe, and its relative velocity. By calculating the frequency shift of a particular sample volume, for example a jet of blood flow over a heart valve, its speed and direction can be determined and visualised. This is particularly useful in cardiovascular studies (sonography of the vasculature system and heart) and essential in many areas such as determining reverse blood flow in the liver vasculature in portal hypertension. The Doppler information is displayed graphically using spectral Doppler, or as an image using color Doppler (directional Doppler) or power Doppler (non directional Doppler). This Doppler shift falls in the audible range and is often presented audibly using stereo speakers: this produces a very distinctive, although synthetic, pulsing sound. Strictly speaking, most modern sonographic machines do not use the ...
TY - JOUR. T1 - Are Doppler ultrasonography parameters symmetric between the right and left kidney?. AU - Ansarin, Khalil. AU - Bavil, Abolhassan Shakeri. AU - Ghabili, Kamyar. AU - Mohajel Shoja, Mohammadali. AU - Khosroshahi, Hamid T.. AU - Hajipour, Babak. AU - Tubbs, R. Shane. AU - Parvizi, Mojtaba. PY - 2010/12/1. Y1 - 2010/12/1. N2 - Background: Among numerous modalities applied for evaluation of kidney diseases, Doppler ultrasonography (DU) provides information about the hemodynamic status of the kidneys. Meanwhile, the variability in DU parameters of the right and left kidney is a matter of controversy. The aim of this study was to determine whether any difference exists between the DU indices of the right and left kidney. Methods: Retrospectively, we collected DU findings of 25 healthy potential renal transplant donors. All donors underwent renal DU and multidetector computed tomographic angiography before donor nephrectomy. DU indices, including peak systolic volume (PSV), resistive ...
Colour Doppler and power Doppler image of an intraocular tumour -- A contrast-enhanced CT image showing an intraocular hyperdense mass, with the detachment of ...
Preparative chromatography detectors can have very limited specifications, compared with their analytical counterparts. They need not be particularly sensitive (in fact too great a sensitivity is a distinct disadvantage) as the sample size and the eluent solute concentrations are very large. Preparative chromatography detectors can have large sensor volumes and, as the detector is required only to monitor the separation, they need not have a linear response. They do need to tolerate high flow rates and thus, must have low flow impedance. Analytical detectors can be used for preparative purposes but a portion is usually split from the column eluent, diluted with more mobile phase and then passed through the detector. In practice this becomes a rather clumsy procedure. The most commonly used detector in preparative GC is the thermal conductivity detector (hot wire detector). Even this detector, however, is often too sensitive and has too high a flow impedance. Under such circumstances, the ...
Ultrasound imaging has been used extensively to detect abnormalities of the non-lactating breast. In contrast, the use of ultrasound for the investigation of pathology of the lactating breast is limited. Recent studies have re-examined the anatomy of the lactating breast highlighting features unique to this phase of breast development. These features should be taken into consideration along with knowledge of common lactation pathologies in order to make an accurate diagnosis when examining the lactating breast. Scanning techniques and ultrasound appearances of the normal lactating breast will be contrasted to those of the non-lactating breast. In addition ultrasound characteristics of common pathologies encountered during lactation will be described.
I had a psa of 4.4 in 1999 and steadily increasing psa every 3-6 months before reaching 40 in 5-08.Free psa ranged from 16 to 10%. I had biopsies every year, 13 total in all. I saw 5 different doctors, all urologists or urological oncologists at Long Beach, UCLA, UCSF and UCI and had an MRIS at UCSF in 2007. All tests were negative and I was told that because of all the biopsies I most likely didnt have PC, but to keep getting biopsies every year.. in Oct 08 my 13th biopsy of 25 cores indicated 2 positive cores, gleason 3+3 less that 5% in 2 cores. Doc recommended surgery.. 2nd opinion from a prostate oncologist, referred by my wifes oncologists said cancer found wis indolant and statistacally insignificant, but PSA histor was a major concern and ordered a few more tests.. Color Doppler ultrasound with targeted biopsy found a transition zone tumor 18mmX16mm, gleason 3+4 and 4+3. CT and bone scans clear, but Doc thinks that there may be lymph node involvement (30% chance) because of my high ...
Ultrasound criteria correlate with the size, the location, the presence of ascites, the presences of cysts and solid areas in the same cyst, the sheer cyst or solid appearance, the thick walls, etc. Besides, the transvaginal Doppler ultrasound with colour flow imaging is a modern examination that offers significant assistance in determining blood flow in the cyst area. From the biochemical test, the C1-125 indicator is useful but has higher sensitivity and specificity for post-menopausal women.. Laparoscopic criteria for benign findings (Mage G, 1987) correlate with the thickness of the wall, the vascularisation of the cyst, the colour of the fluid contents, the length of the same connection of the ovary and the appearance of the internal wall of the cyst. According to the pre-operative and peri-operative assessment of the cyst, laparoscopic surgery is performed. Special care is taken in the removal of the entire capsule (shell) of the cyst without it rupturing, as well as in the maintenance of ...
For many hemodynamically significant or catastrophic valvular lesions good quality 2D and colour doppler evaluation are often sufficient to make the diagnosis. Acute left-sided valvular disease (particularly acute AR and acute MR) can lead to hemodynamic collapse and further deterioration despite standard therapies for shock (i.e. vasopressors) and patients with such potential valvulopathy should be evaluated urgently. The mainstay of POCUS assessment of valvular disease is with 2D echocardiography and colour doppler. Two-dimensional echocardiography should assess for valvular prolapse, flail, perforations, restriction/stenosis/calcification and associated structural changes (chamber dilation). Colour doppler is used to evaluate valvular function as turbulent flow and regurgitation cannot be visualized without it. The following tables include some of the basic quantitative measures of valvular disease which may be used to add confidence for clinical presentations based on 2D and colour doppler. ...
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Persistence of post-operative color Doppler abnormalities is linked to reduced graft survival in pediatric patients after liver ...
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Transcranial Doppler is used to identify and interrogate the intracerebral arterial system. Normally the skull is impenetrable to Ultrasound waves, but using certain windows allows adequate penetration to monitor cerebrovascular hemodynamics.
Transcranial Doppler is used to identify and interrogate the intracerebral arterial system. Normally the skull is impenetrable to Ultrasound waves, but using certain windows allows adequate penetration to monitor cerebrovascular hemodynamics.
Under the clinical direction and general supervision of the Head Technologist of the Echo Lab, performs diagnostic ultrasound examinations of the heart (echocardiograms), and related procedures according to established guidelines. Performs studies using 2-D, M-mode, continuous wave, pulsed wave and colour flow Doppler and identifies specific diseases and conditions using
Program to perform acoustic simulation using lumped parameter analysis. Also measures acoustical impedance such as acoustical flow impedance and acoustical surface impedance
Its suggested that both B-mode and Doppler ultrasonography could be used to obtain the diagnosis of mastitis in goats on a trustful and non-invasive way, therefore, this study aims to evaluate the sonographic characteristics ...
ta = chebwin(N,30); % 30 dB Chebychev Spatial Tapper. tb = chebwin(M,40); % 40 dB Chebychev Doppler Taper. phit = 0; thetat = 0; % Target Azimuth and Elevation Angles. fspt = d/lambda*cos(thetat*pi/180)*sin(phit*pi/180); % Target Spatial Frequency. a = exp(1i*2*pi*fspt*(0:N-1)).; % Target Spatial Steering Vector. fd = 0:.5:300; Lfd = length(fd); omega = fd/fr; dopplerfilterbank = linspace(0,300,M+1); % Doppler Filterbank frequencies. omegadopplerbank = dopplerfilterbank/fr; SINRopt_mat = zeros(length(dopplerfilterbank),Lfd); SINRtap_mat = zeros(length(dopplerfilterbank),Lfd); InvRu = inv(Ru); for m=1:length(dopplerfilterbank) bm = exp(1i*2*pi*omegadopplerbank(m)*(0:M-1)).; % Doppler Filter Steering Vector vm = kron(bm,a); gt = kron(tb.*bm,ta.*a); wm = InvRu*vm; %#ok,*MINV, % Eq. (116) wmtap = InvRu*gt; for n=1:Lfd b = exp(1i*2*pi*omega(n)*(0:M-1)).; % Dummy Target Doppler Steering Vector v = kron(b,a); SINRopt_mat(m,n) = wm*v; % Eq. (114) SINRtap_mat(m,n) = abs(wmtap*v)^2/real(wmtap*gt); % ...
Ultrasound imaging uses a transducer or probe to generate sound waves and produce pictures of the bodys internal structures. It does not use ionizing radiation, has no known harmful effects, and provides a clear picture of soft tissues that dont show up well on x-ray images. Ultrasound is often used to help diagnose unexplained pain, swelling and infection. It may also be used to provide imaging guidance to needle biopsies or to see and evaluate conditions related to blood flow. Its also the preferred imaging method for monitoring a pregnant woman and her unborn child ...
... is widely used in renal ultrasonography. Renal vessels are easily depicted by the color Doppler ... Duplex ultrasonography sometimes refers to Doppler ultrasonography or spectral Doppler ultrasonography. Doppler ultrasonography ... Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to perform imaging of the movement of ... The Doppler fetal monitor is commonly referred to simply as a Doppler or fetal Doppler. Doppler fetal monitors provide ...
Color Doppler ultrasound is the imaging method of choice for the investigation of priapism, because it is noninvasive, widely ... On color Doppler, the cavernous arteries present single phase flow. In the flaccid penis (Figure 3), the normal cavernous ... Retrieved 15 March 2019 Penile Doppler ultrasonography revisited Retrieved 15 March 2019 (Use dmy dates from April 2019, ... Preceding the ultrasound examination with Doppler, the penis must be examined in B mode, in order to identify possible tumors, ...
Low accuracy of color Doppler ultrasound in the detection of proximal leg vein thrombosis in asymptomatic high-risk patients. ... The process should be similar to that used in Doppler ultrasonography. Tissue transluminated by white light has a refraction ... Deep veins of the calf: assessment with color Doppler flow imaging. Radiology 1989; 171:481. Polak, JF. Venous thrombosis. In: ... By the impression of the camera on the skin, red and yellow colors are observed. The red color is soon dispersed in the skin ...
"Tailored operative technique for Chiari type I malformation using intraoperative color Doppler ultrasonography". Neurosurgery. ... They also published the first description of a decompression surgery utilizing color Doppler sonography. This technique has ...
... a new ultrasound technique called color Doppler ultrasonography has been used to assess equine tendon injuries. Color Doppler ... Murata, Daiki; Misumi, Kazuhiro; Fujiki, Makoto (2012). "A Preliminary Study of Diagnostic Color Doppler Ultrasonography in ...
With color Doppler ultrasonography, the vascularity of the undescended testis is poor.[citation needed] A karyotype can confirm ...
Espahbodi, S; Doré, CJ; Humphries, KN; Hughes, SP (2013). "Color Doppler ultrasonography of lumbar artery blood flow in ...
Doppler ultrasonography can also be used and is helpful at analyzing the characteristics of the cyst. It can identify the ... presence of color flow within a septum as well as the presence of a solid component of the mass. Ultrasonography is an ... Cysts that are too large to be accurately analyzed by ultrasonography are typically when MRI would be used. The advantages of ... Both ultrasonography and MRI show enlarged ovaries with multiple theca lutein cysts. Oral contraceptives containing only ...
Estimation of blood velocity and turbulence in color flow imaging used in medical ultrasonography. Estimation of target ... Doppler Radar Meteorological Observations Doppler Radar Theory.[full citation needed] Autocorrelation technique described on p. ... velocity in pulse-doppler radar A covariance approach to spectral moment estimation, Miller et al., IEEE Transactions on ...
Color-flow imaging and pulsed Doppler ultrasonography provided anatomical and pathophysiological information regarding cardiac ... Two-dimensional echocardiography with color-flow imaging and pulsed Doppler ultrasound was used to evaluate one fetus and five ... The vein of Galen can be visualized using ultrasound or Doppler. A malformed Great Cerebral Vein will be noticeably enlarged. ...
Color Doppler ultrasound may also help differentiate the two. Testing a person to make sure they do not have a hemoglobinopathy ... Penile ultrasonography with Doppler is the imaging method of choice, because it is noninvasive, widely available, and highly ...
... along with a visible appendix with increased blood flow when using color Doppler, and noncompressibility of the appendix, as it ... Abdominal ultrasonography, preferably with doppler sonography, is useful to detect appendicitis, especially in children. ... CT scan has a sensitivity of 94%, specificity of 95%. Ultrasonography had an overall sensitivity of 86%, a specificity of 81%. ... In some cases (approximately 5%), ultrasonography of the iliac fossa does not reveal any abnormalities despite the presence of ...
Doppler ultrasonography is used to study blood flow and muscle motion. The different detected speeds are represented in color ... and PW Doppler/Color doppler information. Triplex: When 2D image (B-mode) and color doppler are combined with Spectral doppler ... Color Doppler is the measurement of velocity by color scale. Color Doppler images are generally combined with gray scale (B- ... Doppler mode: This mode makes use of the Doppler effect in measuring and visualizing blood flow Color Doppler: Velocity ...
... review of 5 cases diagnosed by color Doppler ultrasonography]. Journal de Radiologie (in French). 82 (7): 839-42. PMID 11507447 ... July 2001). "Orchites ischémiques: À propos de 5 cas diagnostiqués en écho-Doppler couleur" [Ischemic orchiditis: ...
This is most successful in the second trimester, however Color Doppler ultrasound or transvaginal ultrasound can be used in ... "Placental cord insertion visualization with prenatal ultrasonography". Journal of Ultrasound in Medicine. 15 (8): 585-593. doi: ... In these cases, the use of Color Doppler ultrasound or transvaginal ultrasound can enhance the visualization of the umbilical ... Upon diagnosis of velamentous cord insertion, transvaginal ultrasound with Color Doppler may also be performed to determine ...
Color Doppler and power Doppler ultrasound are useful in assessing the degree of synovial inflammation as they can show ... Technical advances in ultrasonography like high-frequency transducers (10 MHz or higher) have improved the spatial resolution ... The red cells are of normal size and color (normocytic and normochromic). A low white blood cell count usually only occurs in ...
... was made possible with the developments of Doppler and color Doppler. Doppler measurements using Doppler effect can show the ... Alongside the improving imaging technology, acoustic Doppler velocimetry and medical ultrasonography color Doppler were ... The overlay of color onto the Doppler information lets these images be seen more clearly. The choice of a probe will depend on ... The sapheno-femoral junction is tested by the Valsalva maneuver with the use of color Doppler being helpful at this stage. The ...
ISBN 978-0-470-39025-2. Michele Bertolotto (22 December 2007). Color Doppler US of the Penis. Springer Science & Business Media ... Medical ultrasonography of a normal penis. Peyronie's disease Werner Lierse (6 December 2012). Applied Anatomy of the Pelvis. ...
... thyroid ultrasonography with color-flow-doppler and levels of circulating interleukin-6, though none are considered the gold- ...
Color Doppler and Ultrasonography Renal Transplantation and Renal Hemodialysis Radiotherapy Latest Physiotherapy Equipment, ...
Color doppler imaging, a type of Doppler ultrasonography Capacitor discharge ignition or thyristor ignition, a type of ...
... and colonography are performed like a standard abdominal examination using B-mode and color flow Doppler ultrasonography using ... Color flow Doppler sonography is used to examine the localization of lesions in relation to vessels. All measurements of ... so they are indeed awake for the procedure and can watch the inside of their colon on the color monitor. Substituting propofol ...
... (TCD) and transcranial color Doppler (TCCD) are types of Doppler ultrasonography that measure the velocity ... Njemanze, PC; Gomez, CR; Horenstein, S (1992). "Cerebral lateralization and color perception: A transcranial Doppler study". ... Stroobant, N; Vingerhoets, G (2000). "Transcranial Doppler ultrasonography monitoring of cerebral hemodynamics during ... Carotid Doppler machine Arterial resistivity index Transcranial pulsed ultrasound "Transcranial Doppler: An Overview of its ...
... ultrasonography, doppler, color MeSH E01.370.350.850.850.850.850.220 - echocardiography, doppler, color MeSH E01.370.350.850. ... color MeSH E01.370.350.850.850.220.225 - echocardiography, doppler, pulsed MeSH E01.370.350.850.850.850 - ultrasonography, ... doppler MeSH E01.370.350.850.220.220.220 - echocardiography, doppler, color MeSH E01.370.350.850.220.220.225 - echocardiography ... 850.860 - ultrasonography, doppler, pulsed MeSH E01.370.350.850.850.860.225 - echocardiography, doppler, pulsed MeSH E01.370. ...
Doppler ultrasonography of the kidney is widely used, and the vessels are easily depicted by the color Doppler technique in ... The red color in the color box represents motion towards the transducer as defined by the color bar. US is useful for ... but they are easily distinguished with Doppler ultrasonography. In RCCs, Doppler US often shows vessels with high velocities ... Renal ultrasonography (Renal US) is the examination of one or both kidneys using medical ultrasound. Ultrasonography of the ...
Klingelhöfer J, Conrad B, Benecke R, Frank B (1988). "Transcranial Doppler ultrasonography of carotid-basilar collateral ... of subclavian steal in infants with coarctation of the aorta and interruption of the aortic arch by color-coded Doppler ... Doppler ultrasound CT angiography Stroke Management for this condition includes:[citation needed] Carotid subclavian bypass ...
Color Doppler ultrasound can be useful sometimes being able to show the presence of intratumoral vasculature as a sign of ... presence and characteristics on Doppler ultrasonography and contrast-enhanced ultrasound (CEUS).[citation needed] The substrate ... The absence of Doppler signal does not exclude the presence of viable tumor tissue. CEUS exploration, by its ability to enhance ... Doppler exploration reveals no circulatory signal due to very slow flow speed. CEUS investigation has real diagnosis value due ...
Medical ultrasonography section: Doppler sonography Echocardiography American Society of Echocardiography Christian Doppler 54 ... Circulation 1997;95:151-5 Color M-mode and Doppler-derived tau (τ) as practical advances in clinical diastology - the TauCoMM ... It is calculated from the standard transthoracic Doppler echocardiogram measurements of the right atrial area divided by the ... The same author had developed several Doppler echocardiographic numeric parameters over the last two decades to assess cardiac ...
... using gray-scale and color Doppler imaging immediately prior to induction of labor. Presence of the cord was sought in the ... A recent review by Wilson of the American Academy of Ultrasonography Technicians recommends the documentation of umbilical cord ... There are currently three recent texts on ultrasonography which demonstrate the ability of ultrasound to identify umbilical ...
Doppler ultrasonography examinations has a thermal index (TI) of about five times that of regular (B-mode) ultrasound ... Artificially colored, showing gestational sac, yolk sac and embryo (measuring 3 mm as the distance between the + signs). Embryo ... Also used is Doppler sonography which detects the heartbeat of the fetus. Doppler sonography can be used to evaluate the ... Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are ...
On Color Doppler, the lesions appear hypervascular. If cancer is suspected, a biopsy is offered expediently. During a biopsy, a ... Transrectal ultrasonography creates a picture of the prostate using sound waves from a probe in the rectum, but the only test ... Shetty S, Faraj K, Shetty Z, Sutcliffe P, Dave CN (2021-06-26). Talavera F (ed.). "Transrectal Ultrasonography of the Prostate ... "Transrectal Ultrasonography - an overview , ScienceDirect Topics". Retrieved 2022-04-28. Ebeid AI, ...
Doppler ultrasonography of venous blood flow that correlates with respiration can be diagnostic of the absence of deep vein ... When the examiner uses color, the imaging is not much improved. A thrombus may not be evident in the scan. Also a vein lumen ... Unlike arterial ultrasonography, venous ultrasonography is carried out with the probe in a transversal position, (perpendicular ... Lower limbs venous ultrasonography is also indicated in cases of suspected pulmonary embolism where a CT pulmonary angiogram is ...
Color Doppler flow in the endometrial canal can increased confidence in the diagnosis, though its absence does not exclude it, ... In incomplete miscarriage, the Royal Women's Hospital recommendations of management depend on the findings in ultrasonography: ... and tends to be more hypoechoic than retained products with absent color flow on Doppler, and resolving spontaneously on follow ... as detected by obstetric ultrasonography) after a medical abortion is not an indication for surgical intervention (that is, ...
Ultrasound methods including duplex and color flow Doppler can be used to further characterize the clot and Doppler ultrasound ... The common femoral vein is distal to the external iliac vein.) Doppler ultrasonography showing absence of flow and ... Compression ultrasonography for suspected deep vein thrombosis is the standard diagnostic method, and it is highly sensitive ...
Gas meter Mass flow meter Metering pump Water meter Airspeed indicator LIDAR speed gun Radar speed gun, a Doppler radar device ... Black pixels mean no reflectivity (e.g. water surfaces), white pixels mean high reflectivity (e.g. urban areas). Colored pixels ... activity of the brain Ergometer Body fat meter Computed tomography Magnetic resonance imaging Medical ultrasonography Radiology ... the color of the light relates to the temperature of its source, range: from about −50 °C to +4000 °C, note: measurement of ...
"Study of the Associations between Color Doppler Ultrasound Grading of Hyperthyroidism and Biochemical Data on Thyroid Function ... The ratio of SPINA-GT and thyroid volume VT (as determined e.g. by ultrasonography) G ^ T S = G ^ T V T {\displaystyle {\hat {G ... the colour Doppler ultrasound pattern and thyroid volume, and (with negative direction) to thyroid autoantibody titres, which ...
Duplex ultrasonography and angiography may also be used. Angiography is more accurate and allows for treatment at the same time ... In terms of ethnicity, PAD is more common in people of color compared to the white population in a 2:1 ratio. The factors with ... If ABIs are abnormal, the next step is generally a lower limb Doppler ultrasound to look at the site of obstruction and extent ...
January 2016). "Altered Doppler flow patterns in cirrhosis patients: an overview". Ultrasonography. 35 (1): 3-12. doi:10.14366/ ... This phenomenon is due to increased levels of bilirubin, which may also cause the urine to be dark-colored. Liver cirrhosis ... Its surface is irregular, the consistency is firm, and if associated with steatosis the color is yellow. Depending on the size ... The term "cirrhosis" was derived in 1819 from the Greek word "kirrhos," which describes the yellowish color of a diseased liver ...
... but they are easily distinguished with Doppler ultrasonography (Doppler US). In renal cell carcinomas, Doppler US often shows ... 2002). "Risk of malignancy in nonpalpable thyroid nodules: predictive value of ultrasound and color-Doppler features". J. Clin ... Some renal cell carcinomas are hypovascular and not distinguishable with Doppler US. Therefore, renal tumors without a Doppler ... Content initially copied from: Hansen, Kristoffer; Nielsen, Michael; Ewertsen, Caroline (2015). "Ultrasonography of the Kidney ...
For any thickened septation, nodularity, vascular flow on color doppler, or growth over several ultrasounds, surgical removal ... Transvaginal ultrasonography showing a 67 x 40 mm endometrioma, with a somewhat grainy content. Ovarian cysts are usually ... may indicate more serious disease and should be investigated through ultrasonography and laparoscopy, especially in cases where ... Ovarian mucinous cystadenoma Paraovarian cyst Cystic adenofibroma Borderline tumoral cysts Transvaginal ultrasonography of a ...
This may result in the clinical finding of cyanosis, the presence of bluish-colored skin, especially of the lips and under the ... 1995). "Transcranial doppler monitoring. (letter to editor)". South Pacific Underwater Medicine Society Journal. 25 (2). ISSN ... defect Most individuals with a significant ASD are diagnosed in utero or in early childhood with the use of ultrasonography or ... an atrial septal defect may be seen on color flow imaging as a jet of blood from the left atrium to the right atrium.[citation ...
US and color Doppler imaging of ocular and orbital disease in the pediatric age group. RadioGraphics 1996; 16(2): 251-272. ... Imaging studies such as ultrasonography (US), Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI) can aid ... Persistent color patterns may also be perceived in the affected eye. Initially, these may be mistaken for psychological ... High resolution ultrasound with Doppler: a diagnostic adjunct in orbital and ocular lesions in children. Pediatr Radiol 1992; ...
Urologists have incorporated transrectal ultrasonography (TRUS) of the prostate into their practices; moreover, TRUS is also ... Color Doppler. Color Doppler scanning has been used to enhance the diagnosis of CAP as an adjunct to TRUS. Several ... DRE, PSA testing, and color Doppler TRUS-guided systematic biopsy are the basis for the diagnosis of prostate cancer. As ... Intermittent and harmonic ultrasonography. The rationale for intermittent and harmonic ultrasonography is that conventional ...
Color Doppler imaging. Color Doppler imaging of dermoid cysts shows no intralesional blood flow, which can help differentiate ... Ultrasonography. Ultrasound characteristics of dermoid cysts include a smooth contour and variable echogenicity. [9] ... Intraorbital and periorbital tumors in children--value of ultrasound and color Doppler imaging in the differential diagnosis. ...
... Young Beom Cha, Hong Ki Kim, Seung Jae Lee, Jong Min Park, Young Ho ... Ten cases of congenital anomalies diagnosed by prenatal ultrasonography.1991 December;34(12) ... 2 cases of omphalocele diagnosed prenatally by ultrasonography.1992 January;35(1) ...
Application Of Color Doppler Ultrasonography In Evaluation Of Portal Hypertension: A Hospital Based Prospective Study. en_US. ... Application Of Color Doppler Ultrasonography In Evaluation Of Portal Hypertension: A Hospital Based Prospective Study. Global ... From the study results it is concluded that color Doppler plays major in the diagnosis of portal hypertension.. en_US. ... The present study aimed to evaluate the role of color Doppler in the diagnosis of portal hypertension. This study was conducted ...
Age and sex matching of Doppler sonographic data is a prerequisite for clinically valuable conclusions. ... Transcranial color Doppler sonography of basal cerebral arteries in 182 healthy subjects: age and sex variability and normal ... Objective: Only a limited number of transcranial color-coded Doppler studies have provided ranges for the normal reference ... with color-coded Doppler sonography via a temporal acoustic window with a 2.5-MHz transcranial probe. The subjects were divided ...
Color Doppler ultrasonography findings of vertebral arteries: A correlation with 64-slice CTA Authors. * Behice Kaniye Yılmaz ... Color Doppler ultrasonography findings of vertebral arteries: A correlation with 64-slice CTA. J Surg Med [Internet]. 2021 Jul ... Color Doppler flow imaging (CDFI) of the vertebral arteries the normal appearance, normal values and proposal for the standards ... Background/Aim: Although normal Color Doppler US (CDU) findings of the carotid system were described by many studies, normal ...
... abdominal ultrasonography with duplex Doppler evaluation of different portal Doppler hemodynamic indices were done for each ... in Dig Dis Sci 54(3):654-660, 2009). Our study was to assess the role of different Doppler indices of portal vein, hepatic and ... To avoid unnecessary endoscopy, some studies have suggested Doppler ultrasound examination as simple, and noninvasive tool in ... From: Role of portal color Doppler ultrasonography as noninvasive predictive tool for esophageal varices in cirrhotic patients ...
By color Doppler imaging ciliary arteries and veins, external ophthalmic artery and dorsal external ophthalmic vein were easily ... By duplex Doppler ultrasonography ocular and orbital vessels were identify and blood flow measurements, including peak systolic ... A-mode, two-dimensional and Doppler ultrasonography have been used to characterize the ocular biometry, ocular structures and ... However, in the authors knowledge the ocular examination by two-dimensional and Doppler imaging ultrasonography has been ...
Doppler ultrasonography showed no reportable abnormalities.. On the 12th day of warfarin therapy, it was found that the color ...
Doppler Color Ultrasonography 31% * Creutzfeldt-Jakob disease and bovine spongiform encephalopathy. Magnetic resonance imaging ... Use of color power transcranial Doppler sonography to monitor aneurysmal coiling. Wardlaw, J. M., Cannon, J. C., Sellar, R. J. ... Outcome, observer reliability, and patient preferences if CTA, MRA, or Doppler ultrasound were used, individually or together, ... Comparison of a simple isotope method of predicting likely middle cerebral artery occlusion with transcranial doppler ...
The accuracy of ultrasonography is further improved with the use of color Doppler imaging. The use of Doppler imaging is ... Proponents of CT have also stated that the specificity of color Doppler imaging is still unknown. In general, the confidence ... Ultrasonography. Ultrasonography can be an alternative to CT in the evaluation of the intraluminal and extraluminal ... Ultrasonography can depict ballooning of the less involved segments, which is seen as focal sacculation or outpouching. These ...
... transcranial Doppler ultrasonography, migraine Lechographie-Doppler transcranienne est utilisee pour letude des variations de ... Transcranial Doppler ultrasonography is used to study intracranial blood flow changes associated with migraine in humans, but ... as biological markers of migraine-related processes and do not support the idea of using transcranial Doppler ultrasonography ... Traduit par la Redaction] Mots-cles : sumatriptan, acide valproique, activation trigeminovasculaire, echographie-Doppler ...
Color Doppler imaging has been frequently used in the diagnosis of testicular torsion and posttreatment follow-up period of the ... M. L. Cannon, M. J. Finger, and D. I. Bulas, "Manual testicular detorsion aided by color doppler ultrasonography," Journal of ... ultrasonography and color Doppler imaging are operator dependent and might yield inconclusive results [3]. ... Color Doppler imaging has been frequently used in the diagnosis of testicular torsion and posttreatment follow-up period of the ...
Kidney cortical flow velocity was investigated by Doppler color duplex ultrasonography. Both systolic and diastolic flow ...
Li D. Clinical value of color Doppler ultrasonography in diagnosis of lower extremity vascular disease in elderly patients with ...
Continuous Wave Doppler Ultrasonography. Doppler ultrasound scanning has become integral part of the physical examination in ... color duplex ultrasonography, plethysmography, and venography may be helpful in doubtful cases [18-21]. ... Duplex Doppler Ultrasonography. It allows for both anatomical and functional assessment of the venous system and can also ... It does need experience to be able to evaluate the Doppler accurately. Hand Held Doppler can also be used in the clinic to ...
Prediction of placenta accreta by ultrasonography and color Doppler imaging. J. Matern. Fetal. Neonatal. Med. 2011;24 (1): 118- ... Doppler ultrasound * umbilical artery Doppler assessment *single umbilical artery. *absent umbilical arterial end diastolic ...
Kidney cortical flow velocity was investigated by Doppler color duplex ultrasonography. Both systolic and diastolic flow ...
Doppler Color Ultrasonography 21% * Publications 13% * Systematic Reviews 12% * Neoplasms 10% * PubMed 6% ...
Use of contrast medium in vascular ultrasonography has been highlighted in this book. A satisfactory number of illustrations ... Color Doppler sonography is a combination of Doppler ultrasound and gray scale ultrasound to provide simultaneous realtime ... The book provides in-depth, clear and concise knowledge of color Doppler for diagnosing various diseases of the human body. The ... Interpretation of this information required a sound knowledge of the basic technical principles of color Doppler imaging and ...
A total of 2,140 color flow Doppler ultrasonography exams from 845 Holstein cows from 10 commercial dairy herds were used in ... The main objective of this study was to determine the accuracy of corpus luteum color flow Doppler ultrasonography (CLCFDU) to ... Short communication: Accuracy of corpus luteum color flow Doppler ultrasonography to diagnose nonpregnancy in dairy cows on day ... controlled trial of reinsemination strategies in dairy cows diagnosed nonpregnant using color flow Doppler ultrasonography on d ...
Bilateral carotid arteries were analyzed by Color Doppler ultrasound at a frequency of 10 MHz on linear array transducer (Model ... Carotid Ultrasonography. All participants underwent a carotid ultrasonography examination between January 2015 and August 2019 ... A total of 1452 CKD participants with stages 1-5 who received carotid ultrasonography were involved in this study, of which 669 ... Firstly, we only performed duplex ultrasonography of carotid vessels for detecting subclinical atherosclerosis, with no other ...
A Doppler ultrasound study may be part of an ultrasound examination, also called color Doppler ultrasonography. Its a special ...
Transvaginal Color Doppler in the Assessment of Cervical Carcinoma and Pre-Cancer: Evidence from a Case Control Study Using ... Colour Doppler Ultrasonography Pulsatility Index of Uterine Vasculature (Articles) S. H. Dodampahala, S. N. Jayakody, W. C. C. ...
DVT prophylaxis and underwent surveillance for PSVT using duplex ultrasonography including spectral and color Doppler B-mode ... The optimal timing for surveillance ultrasonography is unknown. The aim of this study was to estimate the incidence and ...
Color Doppler blood signals were found in all cases, as compared with normal cervical tissue. The consistency between ... Ultrasonography can distinguish RTCC from CTCC. There is a very good consistency between ultrasonography and pathology staging ... METHODS: Sixty-five cases with cervical cancer suspected by ultrasonography and three cases with clinical symptoms treated at ... RESULTS: Sixty-one cases were diagnosed, four misdiagnosed, three missed the diagnosis by ultrasonography, the sensitivity of ...
... measured by color flow Doppler ultrasonography (CFDUSG), TSH receptor antibody (TRAb) measured by M22 based ELISA and Tc-99m ... study evaluating the roles of inferior thyroid artery blood flow velocities measured by color flow Doppler ultrasonography, TSH ... By some Doppler ultrasound parameters (intima-media complex thickness (IMCT) and systolic velocity (SV)), one can point out the ... Introduction: Nowadays, ultrasonography (USG) is being used very commonly and indispensably for diagnosing thyroid diseases. ...
Ultrasonography, Doppler, Color, Ultrasonography, Doppler, Magnetic Resonance Imaging, X-Rays, Hysterosalpingography, ... Diagnostic Techniques, Neurological, Ultrasonography, Prenatal, Evidence-Based Medicine, Magnetic Resonance Spectroscopy, Women ...
  • Early investigators in prostatic ultrasonography conducted experiments with ultrasound probes and recording devices. (
  • Intraorbital and periorbital tumors in children--value of ultrasound and color Doppler imaging in the differential diagnosis. (
  • The purpose of this study was to describe the normal ultrasonographic appearance of rabbits eyes using two-dimensional ultrasound, perform biometric evaluation and study the orbital and ocular vasculature using duplex Doppler ultrasonography. (
  • What is a Doppler ultrasound? (
  • A Doppler ultrasound is an imaging test that uses sound waves to show blood moving through blood vessels. (
  • Doppler ultrasound works by measuring sound waves that are reflected from moving objects, such as red blood cells. (
  • There are different types of Doppler ultrasound tests. (
  • Doppler ultrasound tests are used to help health care providers find out if you have a condition that is reducing or blocking your blood flow. (
  • Why do I need a Doppler ultrasound? (
  • You may need a Doppler ultrasound if you have symptoms of reduced blood flow or a heart disease. (
  • What happens during a Doppler ultrasound? (
  • Doppler ultrasound is the diagnostic investigation. (
  • Color Doppler sonography is a combination of Doppler ultrasound and gray scale ultrasound to provide simultaneous realtime visualization of soft tissues structures and blood flow over the entire scan field. (
  • A Doppler ultrasound study may be part of an ultrasound examination, also called color Doppler ultrasonography. (
  • In recent years, the advantages of the contrast-enhanced ultrasonography in the early screening and diagnosis of the breast DCIS have become increasingly prominent, mainly because the ultrasound has the advantages of convenient, noninvasive, no side effects, economic, real-time dynamic. (
  • All patients were examined by the contrast-enhanced ultrasound and mammography within 2 w before the operation.GE Logiq E9 color Doppler ultrasound diagnostic instrument (USA) was used in the contrastenhanced ultrasound, which has a real-time contrastenhanced function. (
  • Ultrasonography, also known as sonography or ultrasound, is a diagnostic medical test that creates an image by using high-frequency sound waves to bounce off of body structures. (
  • Advanced Color Doppler Ultrasound scanners offers studies of vessels. (
  • This narrative review describes the main applications of de la ultrasonografía en ultrasound in anesthesia, ultrasound-guided techniques, and current trends in the perioperative anesthetic management of anestesia the surgical patient. (
  • obstetric ultrasound , abdominal ultrasound , baby ultrasound , ultrasound imaging , ultrasonography etc. in every price range. (
  • MSL 4D Color Doppler Ultrasound Machine / 4D Bab. (
  • 3D Color cardiac ultrasound machine / 4D Color c. (
  • age range, 20-86 years old) with color-coded Doppler sonography via a temporal acoustic window with a 2.5-MHz transcranial probe. (
  • Morphological imaging is represented mainly by computerized tomography (CT), CT angiography, magnetic resonance (MR), MR angiography, color-Doppler sonography (CDS) and high-resolution CDS. (
  • 4 , 9 The results of predicting thyroid cancer with color Doppler sonography are controversial, with some reporting that Doppler sonography is helpful and others reporting that it did not improve diagnostic accuracy. (
  • Ultrasonography is a safe noninvasive way to evaluate the intraocular and retrobulbar tissue of opaque eyes. (
  • Noninvasive methods include high-resolution compression ultrasonography coupled with color Doppler imaging and impedance plethosmography to assess for DVT, as well as 99 Tc ventilation-perfusion lung scan to assess for PE. (
  • Ultrasonography is a noninvasive, highly sensitive, and specific imaging technique for the evaluation of splenic size. (
  • The present study aimed to evaluate the role of color Doppler in the diagnosis of portal hypertension. (
  • From the study results it is concluded that color Doppler plays major in the diagnosis of portal hypertension. (
  • Color Doppler imaging has been frequently used in the diagnosis of testicular torsion and posttreatment follow-up period of the disease. (
  • RESULTS: Sixty-one cases were diagnosed, four misdiagnosed, three missed the diagnosis by ultrasonography, the sensitivity of which was 95.31% (61/64). (
  • The consistency between ultrasonography and pathology staging diagnosis of RTCC was good (Weighted kappa (95%CI) = 0.87). (
  • There is a very good consistency between ultrasonography and pathology staging diagnosis of RTCC. (
  • Objective: To compare the roles of inferior thyroid artery (ITA) peak systolic and end-diastolic velocities (PSV and EDV) measured by color flow Doppler ultrasonography (CFDUSG), TSH receptor antibody (TRAb) measured by M22 based ELISA and Tc-99m pertechnetate uptake for differential diagnosis between Graves disease (GD) and silent thyroiditis (ST).Methods: One hundred and fifty previously untreated subjects with GD (111 female, 39 male, mean age 3. (
  • Transperineal ultrasonography can be utilized for diagnosis of posterior urethral valves. (
  • The implementation of transcranial Doppler ultrasonography for preclinical study of migraine. (
  • Transcranial Doppler ultrasonography is used to study intracranial blood flow changes associated with migraine in humans, but whether this method is helpful in preclinical settings is yet unknown. (
  • These findings question the reliability of blood flow velocity variations in large intracranial vessels as biological markers of migraine-related processes and do not support the idea of using transcranial Doppler ultrasonography for preclinical screening of antimigraine treatments, at least in the model of acute trigeminovascular activation in rats. (
  • Key words: sumatriptan, valproate, trigeminovascular activation, transcranial Doppler ultrasonography, migraine L'echographie-Doppler transcranienne est utilisee pour l'etude des variations de la circulation sanguine intracranienne associees a la migraine chez l'humain, mais on ne sait toujours pas si cette methode est utile dans un cadre preclinique. (
  • After a stroke , your health care provider may order a special kind of Doppler test, called transcranial Doppler, to check blood flow to the brain. (
  • LOGIQ E9 color Doppler ultrasonic diagnostic instrument (5.5-10.0 MHz) was used to examine thyroid, and the Grey-Scale Intensity of region of interest were measured. (
  • The early applications of ultrasonography in medicine involved sound-wave generators, cathode-ray tubes, Polaroid photography, or 35-mm film recording. (
  • Background/Aim: Although normal Color Doppler US (CDU) findings of the carotid system were described by many studies, normal findings of the vertebral system have not been studied extensively. (
  • Subclinical atherosclerosis was diagnosed with carotid ultrasonography. (
  • By duplex Doppler ultrasonography ocular and orbital vessels were identify and blood flow measurements, including peak systolic velocity, end diastolic velocity, pulsatility index and resistive index, were obtained in external ophthalmic artery and ciliary arteries. (
  • Duplex Doppler. (
  • 52 y male patient with chronic liver disease, a presents Doppler U/S of hepatic artery with HAPI: 1.27 and HARI: 0.81. (
  • Liver ultrasonography showed a moderate degree of fatty liver infiltration. (
  • Screening based on the ankle brachial index using Doppler ultrasonography may be more useful than physical examination alone. (
  • Screening based on the ankle brachial index (ABI) measured by Doppler ultrasonography could prove highly useful in identifying patients with previously unrecognized PAD. (
  • A-mode, two-dimensional and Doppler ultrasonography have been used to characterize the ocular biometry, ocular structures and orbital and ocular vasculature respectively, in humans and dogs. (
  • Spectral Doppler. (
  • Then a computer turns the images into a graph, as in spectral Doppler. (
  • Patients received perioperative DVT prophylaxis and underwent surveillance for PSVT using duplex ultrasonography including spectral and color Doppler B-mode technique 1 week and 1 month postop. (
  • A useful tool that can help supplement various diagnostic and treatment modalities for prostate cancer is transrectal ultrasonography (TRUS). (
  • In this report, we found Sparganosis could be preliminarily distinguished from tumors by ultrasonography and color doppler flow imaging, and then confirm Sparganosis by molecular biological methods, which provided a more efficient method for the detection of Sparganosis. (
  • Objectif : Décrire les indications et les résultats de l'échographie Doppler vasculaire en pratique de ville à Cotonou au Bénin. (
  • Les variables étudiées étaient l'âge et le sexe, les indications cliniques, la région anatomique examinée et les lésions retrouvées à l'échographie Doppler vasculaire. (
  • Clinical study of color doppler ultrasonography in IVF-ET. (
  • METHODS: Sixty-five cases with cervical cancer suspected by ultrasonography and three cases with clinical symptoms treated at our department underwent cervical biopsy. (
  • At present, the common clinical screening and examination methods mainly included mammography, MRI ductography, and contrast-enhanced ultrasonography examination. (
  • Color Doppler imaging of dermoid cysts shows no intralesional blood flow, which can help differentiate them from hemangioma and rhabdomyosarcoma. (
  • To identify changes in rat intracranial blood flow specific to trigeminovascular activation--a key process in migraine pathophysiology--we measured Doppler indices in the middle cerebral artery and basilar artery before, during, and after dural or somatosensory electrical stimulation. (
  • Interpretation of this information required a sound knowledge of the basic technical principles of color Doppler imaging and the pathophysiology involved in the disease process. (
  • Doppler imaging showed normal portal vein flow. (
  • Although there was a normal parenchymal blood flow in the left testicle, color Doppler imaging revealed the absence of blood flow in the parenchyma of the right testicle. (
  • After preoperative external detorsion, symmetrical parenchymal blood flow in the right testicle compared to the left testicle was observed on color Doppler imaging. (
  • Kidney cortical flow velocity was investigated by Doppler color duplex ultrasonography. (
  • These colors show the speed and direction of blood flow in real time. (
  • It can provide more detail of blood flow than standard color Doppler. (
  • This test shows blood flow information on a graph, rather than color pictures. (
  • The objective of this study was to quantify the reproductive performance of 4 reinsemination strategies in cows diagnosed nonpregnant using corpus luteum color flow Doppler ultrasonography on d 21 after last insemination. (
  • A total of 2,140 color flow Doppler ultrasonography exams from 845 Holstein cows from 10 commercial dairy herds were used in thi. (
  • Breast ultrasonography showed multiple bands with low echo and uneven echo, and color doppler flow imaging showed no blood flow signal in the lesion. (
  • Breast ultrasonography showed multiple bands with low echo and uneven echo (Fig. 1 A). Color doppler flow imaging showed no blood flow signal in the lesion (Fig. 1 B). Subsequently, a lumpectomy was carried out and revealed a 30 cm worm. (
  • In a prospective cohort study, 59 pregnant women with a high risk of developing PE were subjected to flow-mediated dilation (FMD) and to Doppler velocimetry of uterine arteries in order to obtain their Pulsatility Index (UtA-PI). (
  • Endothelial function can be assessed using Flow-mediated dilation (FMD) of the brachial artery, which is an ultrasonography test that evaluates endothelial response to a reactive hyperemia [ 13 - 15 ]. (
  • However, in the author's knowledge the ocular examination by two-dimensional and Doppler imaging ultrasonography has been poorly documented. (
  • 3 Some experts argue that a thorough physical examination with special attention to the pulses, auscultation for arterial bruits, and inspection for postural color changes ( Figure 1 ) can be almost as informative as an ABI using Doppler ultrasonography. (
  • Point-of-care ultrasonography significantly improved the sensitivity of physical examination alone in diagnosing splenomegaly in a prospective study of 39 adult hospitalized patients. (
  • All the patients were subjected to color Doppler for the evaluation of portal hypertension.Maximum number of patients had age between 51-60 years. (
  • 4 Improving skills in eliciting symptoms, examining the peripheral vascular system, and obtaining segmental blood pressures ( Figure 2 ) , 6 plus increased use of Doppler ABI in patients at risk of PAD, should identify more patients in whom aggressive preventive strategies might delay disease progression or obviate the need for an invasive intervention. (
  • To evaluate the diagnostic value and imaging features of mammography and contrast-enhanced ultrasonography in breast ductal carcinoma in situ, 60 patients with 62 lesions were selected from 80 patients with ductal carcinoma in situ who were surgically treated and pathologically diagnosed in Huzhou Central Hospital from June 2017 to June 2019. (
  • All patients were examined by contrast-enhanced ultrasonography and mammography within 2 w before the operation. (
  • Tous les patients ayant fait une échographie Doppler vasculaire dans la période ont été inclus dans l'étude. (
  • Les patients étaient en majorité de sexe masculin (54,79%) avec une sex-ratio M/F égale à 1,21. (
  • Color Doppler blood signals were found in all cases, as compared with normal cervical tissue. (
  • b Presents Doppler U/S of splenic artery with SARI: 0.62, the splenic bipolar diameter is 18 cm. c Presents Doppler U/S of PV with MVPV: 19.6 cm/s. (
  • Kızılkılıç O, Hurcan C. Color Doppler Analysis of Vertebral Arteries Correlative study with Angiographic Data. (
  • LEAG: study conception, de datos PubMed y Cochrane, se incluyeron artículos originales, estudios aleatorizados y de revisión, en español y en inglés, manuscript design, publicados entre 2017-2021. (
  • Continuous wave Doppler. (
  • Dogs were positioned in lateral recumbency using right and left parasternal positions, and evaluated by two-dimensional, M, pulsed, continuous and color Doppler modes. (
  • In transabdominal ultrasonography, a low-frequency transducer and a full bladder are used to displace bowel gas and provide an acoustic window to improve image resolution while allowing a large viewing field of the pelvis. (
  • Use of contrast medium in vascular ultrasonography has been highlighted in this book. (
  • By two-dimensional ultrasonography the following ocular structures were measured: cornea, anterior chamber, lens thickness, vitreous body and anterior to posterior dimension of the globe. (
  • CONCLUSION: Ultrasonography can distinguish RTCC from CTCC. (
  • Conclusion : L'échographie Doppler vasculaire réalisée par un spécialiste est performante dans le diagnostic des pathologies vasculaires périphériques. (
  • Pelvic ultrasonography is one of the best imaging modalities used to evaluate nonspecific pelvic pain, pregnancy complications, anatomy of pelvic organs, and various ovarian pathologies. (
  • Matériels et Méthodes : Une étude rétrospective et descriptive a été menée sur les archives des comptes rendus d'échographie Doppler vasculaire d'octobre 2015 à juin 2018, soit une période de 33 mois dans l'unité d'échographie du Centre d'Imagerie Médicale et de Diagnostic. (
  • and ultrasonography and MRI are adjuncts that provide alternative cross-sectional images in populations in whom radiation exposure is a concern. (
  • Ultrasonography does not emit radiation, is less expensive than CT and MRI, has a high resolution, and can image in multiple planes. (
  • [ 2 ] Endovaginal scanning is preferred over computed tomography because of improved visualization of pelvic organs, the absence of radiation exposure with ultrasonography, decreased length of hospital stay, and reduced cost for the patient. (
  • The book provides in-depth, clear and concise knowledge of color Doppler for diagnosing various diseases of the human body. (
  • Ultrasonography has been used in the assessment of the thyroid nodules as a primary imaging technique. (
  • Al-Shifa Multi-Speciality Hospital has an advances color Doppler imaging system. (
  • We present Sparganosis could be preliminarily distinguished from breast tumor by ultrasonography, and then confirm Sparganosis by molecular biological methods, which provided a more efficient method for the detection of Sparganosis. (
  • Only a limited number of transcranial color-coded Doppler studies have provided ranges for the normal reference values of cerebral hemodynamic parameters. (
  • On day 11 post-onset of symptoms (dps 11) he started eating solid food again and his urine showed a standard color. (
  • Rheumatologists have become increasingly interested in musculoskeletal ultrasonography (MSKUS) imaging over the last ten years. (
  • For certain types of Doppler tests, you may be asked to fast (not eat or drink) for several hours before the test. (
  • A slim console color doppler system, offers ideal patient care with its easy mobility, smart features, significant performanceand streamlined workflow, to strengthen the clinicalconfidence and speed the diagnostic decision. (
  • Poor placentation as a consequence of inadequate trophoblastic invasion is one of the key events of PE physiopathology, mainly in early-onset PE, and can be evaluated by the Doppler velocimetry of uterine arteries [ 3 , 16 ]. (