Multidetector Computed Tomography
Tomography, X-Ray Computed
Tomography, Spiral Computed
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
Radiographic Image Interpretation, Computer-Assisted
An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.
Tomography, Optical Coherence
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 Scanners, X-Ray Computed
Radiographic Image Enhancement
Cone-Beam Computed Tomography
Sensitivity and Specificity
The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).
Tomography, Emission-Computed, Single-Photon
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Cardiac-Gated Imaging Techniques
Reproducibility of Results
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.
Projection of near-IR light (INFRARED RAYS), in the 700-1000 nm region, across an object in parallel beams to an array of sensitive photodetectors. This is repeated at various angles and a mathematical reconstruction provides three dimensional MEDICAL IMAGING of tissues. Based on the relative transparency of tissues to this spectra, it has been used to monitor local oxygenation, brain and joints.
Predictive Value of Tests
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.
Image Processing, Computer-Assisted
Electron Microscope Tomography
Coronary Artery Disease
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).
Unanticipated information discovered in the course of testing or medical care. Used in discussions of information that may have social or psychological consequences, such as when it is learned that a child's biological father is someone other than the putative father, or that a person tested for one disease or disorder has, or is at risk for, something else.
A spectrum of congenital, inherited, or acquired abnormalities in BLOOD VESSELS that can adversely affect the normal blood flow in ARTERIES or VEINS. Most are congenital defects such as abnormal communications between blood vessels (fistula), shunting of arterial blood directly into veins bypassing the CAPILLARIES (arteriovenous malformations), formation of large dilated blood blood-filled vessels (cavernous angioma), and swollen capillaries (capillary telangiectases). In rare cases, vascular malformations can result from trauma or diseases.
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.
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
The compound is given by intravenous injection to do POSITRON-EMISSION TOMOGRAPHY for the assessment of cerebral and myocardial glucose metabolism in various physiological or pathological states including stroke and myocardial ischemia. It is also employed for the detection of malignant tumors including those of the brain, liver, and thyroid gland. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1162)
Magnetic Resonance Imaging
Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).
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)
Severity of Illness Index
Cholangiopancreatography, Magnetic Resonance
Coronary Vessel Anomalies
Extravasation of Diagnostic and Therapeutic Materials
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
Solitary Pulmonary Nodule
Deposition of calcium into the blood vessel structures. Excessive calcification of the vessels are associated with ATHEROSCLEROTIC PLAQUES formation particularly after MYOCARDIAL INFARCTION (see MONCKEBERG MEDIAL CALCIFIC SCLEROSIS) and chronic kidney diseases which in turn increase VASCULAR STIFFNESS.
A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.
An anomalous pulmonary venous return in which the right PULMONARY VEIN is not connected to the LEFT ATRIUM but to the INFERIOR VENA CAVA. Scimitar syndrome is named for the crescent- or Turkish sword-like shadow in the chest radiography and is often associated with hypoplasia of the right lung and right pulmonary artery, and dextroposition of the heart.
Aortic Valve Stenosis
Neoplasms, Connective and Soft Tissue
Heart Valve Prosthesis
Myocardial Perfusion Imaging
A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.
Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
Magnetic Resonance Angiography
Equipment Failure Analysis
Sudden slips on a fault, and the resulting ground shaking and radiated seismic energy caused by the slips, or by volcanic or magmatic activity, or other sudden stress changes in the earth. Faults are fractures along which the blocks of EARTH crust on either side have moved relative to one another parallel to the fracture.
Heart Valve Prosthesis Implantation
Combination or superimposition of two images for demonstrating differences between them (e.g., radiograph with contrast vs. one without, radionuclide images using different radionuclides, radiograph vs. radionuclide image) and in the preparation of audiovisual materials (e.g., offsetting identical images, coloring of vessels in angiograms).
Aortic Valve Insufficiency
Angiography, Digital Subtraction
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 abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.
Four-Dimensional Computed Tomography
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
Technetium Tc 99m Sestamibi
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)
Not an aneurysm but a well-defined collection of blood and CONNECTIVE TISSUE outside the wall of a blood vessel or the heart. It is the containment of a ruptured blood vessel or heart, such as sealing a rupture of the left ventricle. False aneurysm is formed by organized THROMBUS and HEMATOMA in surrounding tissue.
Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
Renal Artery Obstruction
The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.
The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction).
Tuberculosis, Lymph Node
Carotid Artery Diseases
Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed)
Magnetic Resonance Imaging, Cine
A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo MRI sequence with retrospective ECG-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualized.
Heart Valve Diseases
Image Interpretation, Computer-Assisted
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)
Diagnostic Techniques, Ophthalmological
Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA).
Does the right inferior phrenic artery have a supplying role in liver cirrhosis without hepatocellular carcinoma? A 64-slice CT study. (1/451)(+info)
Can renal dimensions and the main renal artery diameter indicate the presence of an accessory renal artery? A 64-slice CT study. (2/451)(+info)
Prevalence of aortic root dilation in patients with CT angiography of the aorta. (3/451)(+info)
Dual-energy CT revisited with multidetector CT: review of principles and clinical applications. (4/451)(+info)
The internal mammary vessels above and below the first rib on multidetector CT: implications for anatomical feasibility of lung biopsy via anterior approach. (5/451)(+info)
Diagnostic performance of non-invasive multidetector computed tomography coronary angiography to detect coronary artery disease using different endpoints: detection of significant stenosis vs. detection of atherosclerosis. (6/451)(+info)
Coronary artery calcification is associated with insulin resistance index in patients with type 1 diabetes. (7/451)(+info)
Diagnostic performance of exercise bicycle testing and single-photon emission computed tomography: comparison with 64-slice computed tomography coronary angiography. (8/451)(+info)
The clinicians response to a report of an incidental pulmonary embolism detected on multidetector CT. - Department of Oncology
BACKGROUND: The prevalence of incidental pulmonary emboli (PE) detected on contrast enhanced CT performed for other reasons is approximately 2.5%. The treatment decisions based upon the discovery of incidental PE have been less well reported. The purpose of this study was to report the clinicians response to, and consequences of, the finding of incidental PE on contrast enhanced CT. METHODS: Retrospective cohort study. Patients with incidental PE detected on a contrast enhanced CT were retrospectively identified at a single institution between 1 January 2009 and 31 December 2009. Case note review was performed to assess clinicians responses to this finding. Patients with synchronous venous thromboembolism, unrecognised symptoms or factors preventing response assessment were excluded from this analysis. Patient and PE characteristics, treatment, and outcomes related to treatment and non-treatment were recorded. RESULTS: There were 73 patients with incidental PE: 52 were in the proximal pulmonary
Multidetector Coronary Ct Angiography PrinciplesPractice And Applications, KARTHIKEYAN, 9788184482966
Multidetector Coronary Ct Angiography PrinciplesPractice And Applications - Buy Multidetector Coronary Ct Angiography PrinciplesPractice And Applications by KARTHIKEYAN with best discount of 10.00% at meripustak.com.
Multidetector row CT with dual-phase CT angiography in the preoperative evaluation of pancreatic cancer<...
TY - JOUR. T1 - Multidetector row CT with dual-phase CT angiography in the preoperative evaluation of pancreatic cancer. AU - Horton, Karen M.. AU - Fishman, Elliot K.. PY - 2002/1/1. Y1 - 2002/1/1. UR - http://www.scopus.com/inward/record.url?scp=0036426627&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0036426627&partnerID=8YFLogxK. U2 - 10.3109/20024091059189. DO - 10.3109/20024091059189. M3 - Article. C2 - 12425453. AN - SCOPUS:0036426627. VL - 43. SP - 323. EP - 360. JO - Critical Reviews in Diagnostic Imaging. JF - Critical Reviews in Diagnostic Imaging. SN - 1040-8371. IS - 5. ER - ...
Interrupted aortic arch in a neonate: multidetector CT diagnosis | AVESİS
We report the usefulness of multidetector CT angiography (CTA) in the diagnosis of interrupted aorta of a neonate. CTA is useful for evaluating malformations of the aortic arch, particularly in cases that cannot undergo conventional angiography or in which detailed information cannot be provided by echocardiography. ...
Comprehensive imaging of acute ischemic stroke using multidetector CT: fast, safe and feasible - MDCT.net
Extract. Non-enhanced computed tomography (NECT) has been the standard imaging technique to diagnosis ischemic stroke and exclude hemorrhage. NECT is often preferred to MRI because it is more commonly available in emergency settings, is less expensive and is simpler to perform on severely ill patients. The development of multidetector helical CT (MDCT) has increased the spatial resolution and decreased the required time for CT imaging, thereby permitting special imaging protocols. MDCT angiography (MD-CTA) directly visualizes the intra- and extracranial arteries and thus can be used to identify vascular stenosis or occlusion. Perfusion MDCT (MD-CTP) dynamically assesses the cerebral microvasculature and thus permits quantification of the extent of reversibly and irreversibly damaged brain tissue.. The combined use of all three CT modalities (NECT, MD-CTA and MD-CTP) provides a wealth of information on altered brain anatomy, large vessel status and tissue hemodynamics. Several teams of ...
EURORAD - Radiologic Teaching Files
Therefore, as this case exemplifies, accurate depiction of site and features of SEMS-related perforation is crucial and should rely on multidetector CT. Sometimes complemented with oral contrast swallow in cooperative patients, CT has significant advantages over endoscopy and plain radiographs, particularly for retroperitoneal abnormalities such as those from injuries involving the oesophagogastric junction and second-through-fourth duodenal portions. CT is sensitive for even minimal intraperitoneal, mediastinal or retroperitoneal air, and provides comprehensive high-resolution display of the stent, gastrointestinal wall and surrounding structures, usually allowing clarification of the site and mechanism of injury and correct therapeutic choice [3, 6-10 ...
A comparison of the efficacy and safety of iopamidol-370 and iodixanol-320 in patients undergoing multidetector-row computed...
TY - JOUR. T1 - A comparison of the efficacy and safety of iopamidol-370 and iodixanol-320 in patients undergoing multidetector-row computed tomography. AU - Sahani, Dushyant V.. AU - Soulez, Gilles. AU - Chen, Ke Min. AU - Lepanto, Luigi. AU - Xu, Jian Rong. AU - Nelson, Rendon C.. AU - Grazioli, Luigi. AU - Vanzulli, Angelo. AU - Heiken, Jay P.. PY - 2007/12. Y1 - 2007/12. N2 - OBJECTIVES: To prospectively compare the effects on heart rate (HR) and contrast enhancement efficacy of iopamidol-370 and iodixanol-320 in contrast-enhanced, multidetector-row computed tomography (CE-MDCT). METHODS: IMPACT is a multicenter, double-blind study involving 166 patients undergoing CE-MDCT of the liver (n = 121) or peripheral arteries (n = 45) randomized to receive equi-iodine doses (40 gI) of iopamidol-370 or iodixanol-320 intravenous at 4 mL/s. CE-MDCT was performed using 16-MDCT scanners according to predefined imaging protocols. HR was measured with the patient in the supine position before and ...
Detection and diagnosis of gastric carcinoma with multidetector and 3D computed tomography
With advancements in computed tomographic (CT) technology and the development of 3-dimensional (3D) software programs, multidetector CT (MDCT) now offers val...
Non-invasive cardiac imaging: current and emerging roles for multi-detector row computed tomography. Part 2 | The British...
|strong|In recent years technological advances have enabled improvements in both temporal and spatial resolution such that multi-detector computed tomog ...
JournalScan | Heart
Garcia et al enrolled 238 patients from 11 different hospitals over a nine month period; all had been referred for non-emergency coronary angiography. All patients underwent initial low-dose multidetector computed tomography (MDCT) to evaluate coronary artery calcium, and those with an Agatston score , 600 (187 patients) underwent contrast-enhanced MDCT. Both the MDCT studies and the patients subsequent angiograms were analysed by independent core laboratories. Of 1629 non-stented segments larger than 2 mm in diameter, 89 (5.5%) occurred in 59 (32%) of 187 patients with stenosis of more than 50% by conventional angiography. Of the 1629 segments, 71% were evaluable on MDCT. All non-evaluable segments were censored as positive, and this allowed a sensitivity for detecting more than 50% luminal stenosis to be calculated as 89%; specificity 65%; positive predictive value 13%; and negative predictive value 99%. Sensitivity for detecting more than 70% luminal stenosis was 94%; specificity 67%; ...
Evaluation of Radiation Induced Toxicity to the Heart by Multi-detector Computed Tomography (MDCT) - Full Text View -...
Early detection and improved treatment approaches following breast cancer (BC) have increased disease specific survival and resulted in increasing cohorts of BC survivors who are prone to develop late complications from treatment, including damage caused by radiation therapy (RT) to the heart. Older RT techniques for treating the breast resulted in excess cardiovascular morbidity and mortality. Improved RT techniques minimize irradiation to the heart. Data from various trials have yielded conflicting results on the extent to which these contemporary techniques have actually decreased cardiotoxicity. Long term follow-up and large cohorts are needed in order to evaluate the risk for cardiotoxicity, when based on its clinical manifestations. The current study is aimed to evaluate various imaging methods as potential surrogates to assess the degree of damage caused to the heart by RT in BC survivors many years before it becomes clinically apparent.This includes Multi-detector computed tomography ...
MDCT Protocols | SpringerLink
Multidetector-row computed tomography (MDCT) has become a fundamental imaging technique for the study of many anatomical districts in different clinical situations, as it provides a fast, reliable, an
CiNii 論文 - 肝門部胆管癌の総括
肝門部胆管を含めた肝の区域・亜区域の局所解剖の研究は1950年代に欧米で始まったが,その臨床的外科的局所解剖の研究の発展は日本の臨床家に負うところが大きい.肝門部胆管癌の診断体系はMDCTの登場により大きく変貌した.ステージングおよび手術法の立案はMDCTだけでも十分可能であるといっても過言ではない. 肝外胆管切除, ...
Morphometric Analysis of the Inferior Vena Cava Related to Lumbar Vertebra and the Aortic Bifurcation on Multidetector Computed...
KESKINOZ, Elif Nedret et al. Análisis Morfométrico de la Vena Cava Inferior Relacionado con las Vértebras Lumbares en la Bifurcación Aórtica Mediante Tomografía Computadorizada Multidetector (TCMD). Int. J. Morphol. [online]. 2016, vol.34, n.2, pp.620-627. ISSN 0717-9502. http://dx.doi.org/10.4067/S0717-95022016000200033.. Vascular structures are in greater danger during lumbar surgery. The purpose of this study is to describe the morphology of the inferior vena cava (IVC) related to the lumbar vertebra and aortic bifurcation (AB) and assessing the role of demographic values in these relations to decrease the risk of complications in the surgical interventions. The study was performed on Multidetector Computed Tomography (MDCT) images of 100 male and 100 female cases with an age range from 50 to 84 years. The morphometric values of the IVC obtained from the coronal, sagittal and the axial reformatted images were measured and compared with the demographic values. The distance from the IVC ...
Positive predictive value of computed tomography coronary angiography in clinical practice<...
TY - JOUR. T1 - Positive predictive value of computed tomography coronary angiography in clinical practice. AU - Groothuis, J.G.J.. AU - Beek, A.M.. AU - Meijerink, M.R.. AU - Brinckman, S.L.. AU - Heijmans, M.W.. AU - van Kuijk, C.. AU - van Rossum, A.C.. PY - 2012. Y1 - 2012. N2 - Background: Several studies have investigated the diagnostic performance of computed tomography coronary angiography (CTCA) for the detection of significant coronary artery disease (CAD). These studies were performed in patients that were already referred for invasive coronary angiography (ICA) and prevalence of significant CAD was high. Although the negative predictive value of CTCA was consistently high, a wide range of positive predictive values (PPVs) was reported. Thus, the PPV of CTCA in patients that undergo CTCA as part of a clinical diagnostic evaluation remains unclear. This study investigated the PPV of CTCA for the detection of significant CAD in clinical practice. Methods: A total of 181 patients with ...
Incidental non-cardiac findings of a coronary angiography with a 128-slice multi-detector CT scanner: should we only...
To evaluate the spectrum, prevalence, and significance of incidental non-cardiac findings (INCF) in patients referred for a non-invasive coronary angiography using a 128-slice multi-detector CT (MDCT). The study subjects included 1,044 patients
Three-dimensional CT angiography with multidetector CT data: Study optimization, protocol design, and clinical applications in...
TY - JOUR. T1 - Three-dimensional CT angiography with multidetector CT data. T2 - Study optimization, protocol design, and clinical applications in the abdomen. AU - Lawler, Leo P.. AU - Fishman, Elliot K.. PY - 2002/1/1. Y1 - 2002/1/1. N2 - The quality and flexibility of abdominal CT angiograms have been well served by advances in multidetector technology and volume rendering techniques, which allow real-time, interactive modification of high-quality data sets. We have applied this approach to many of the established and developing roles of CT and we discuss and illustrate protocol design and application.. AB - The quality and flexibility of abdominal CT angiograms have been well served by advances in multidetector technology and volume rendering techniques, which allow real-time, interactive modification of high-quality data sets. We have applied this approach to many of the established and developing roles of CT and we discuss and illustrate protocol design and application.. UR - ...
Multidetector CT of the small bowel: evaluation after oral hyperhydration with isotonic solution | IRIS Università di Pisa
PURPOSE: The aim of our study was to assess the diagnostic capabilities of multidetector CT in the evaluation of the small bowel in different pathological conditions, with the use of oral hyperhydration with isotonic solution. MATERIALS AND METHODS: The study retrospectively evaluated 106 patients who underwent multidetector CT of the small bowel. Four groups were considered on the basis of the clinical findings: group A (48 cases), with suspected or certain chronic inflammatory disease of the small bowel; group B (16 cases), with suspected neoplastic lesion of the small bowel; group C (17 cases), patients affected by malabsorption; group D (25 cases), others: 13 cases with non-specific abdominal pain, 4 cases with occult bleeding, 8 cases affected by fever of unknown origin. Thirteen patients had previously undergone surgical intestinal resection. In all cases the CT examination was performed after the oral administration of 2000 mL polyethylene glycol electrolyte balanced solution; before the ...
Clinical value of multidetector CT coronary angiography as a preoperative screening test before non-coronary cardiac surgery |...
Objective: Myocardial scintigraphy and/or conventional angiography (CA) are often performed before cardiac surgery in an attempt to identify unsuspected coronary artery disease which might result in significant cardiac morbidity and mortality. Multidetector CT coronary angiography (MDCTCA) has a recognised high negative predictive value and may provide a non-invasive alternative in this subset of patients. The aim of this study was to evaluate the clinical value of MDCTCA as a preoperative screening test in candidates for non-coronary cardiac surgery.. Methods: 132 patients underwent MDCTCA (Somatom Sensation 16 Cardiac, Siemens) in the assessment of the cardiac risk profile before surgery. Coronary arteries were screened for ⩾50% stenosis. Patients without significant stenosis (Group 1) underwent surgery without any adjunctive screening tests while all patients with coronary lesions ⩾50% at MDCTCA (Group 2) underwent CA.. Results: 16 patients (12.1%) were excluded due to poor image quality. ...
Acute subarachnoid hemorrhage: using 64-slice multidetector CT angiography to triage patients treatment
CTA using a 64-slice scanner is an accurate tool for detecting and characterizing aneurysms in acute SAH. CTA is useful in the decision process whether to coil or clip an aneurysm.
Long-term prognostic utility of computed tomography coronary angiography in older populations<...
TY - JOUR. T1 - Long-term prognostic utility of computed tomography coronary angiography in older populations. AU - Gnanenthiran, Sonali R.. AU - Naoum, Christopher. AU - Leipsic, Jonathon A.. AU - Achenbach, Stephan. AU - Al-Mallah, Mouaz H.. AU - Andreini, Daniele. AU - Bax, Jeroen J.. AU - Berman, Daniel S.. AU - Budoff, Matthew J.. AU - Cademartiri, Filippo. AU - Callister, Tracy Q.. AU - Chang, Hyuk Jae. AU - Chinnaiyan, Kavitha. AU - Chow, Benjamin J.W.. AU - Cury, Ricardo C.. AU - Delago, Augustin. AU - Feuchtner, Gudrun. AU - Hadamitzky, Martin. AU - Hausleiter, Joerg. AU - Kaufman, Philipp A.. AU - Kim, Yong Jin. AU - Maffei, Erica. AU - Marques, Hugo. AU - De Araújo Goncalves, Pedro. AU - Pontone, Gianluca. AU - Raff, Gilbert L.. AU - Rubinshtein, Ronen. AU - Shaw, Leslee J.. AU - Villines, Todd C.. AU - Gransar, Heidi. AU - Lu, Yao. AU - Jones, Erica C.. AU - Penã, Jessica M.. AU - Lin, Fay Y.. AU - Kritharides, Leonard. AU - Min, James K.. PY - 2019/11/1. Y1 - 2019/11/1. N2 - Aims: ...
Coronary CT Angiography (Coronary CTA) - Imaging Associates
Coronary CT Angiography (Coronary CTA) is a CT scan of the heart and can show any narrowings or blockages of the coronary arteries. It is often used to determine if chest pains are caused by these narrowings or blockages. Working with a number of local cardiologists were able to assess patients with chest pains and determine the most appropriate test. If patients are appropriate for coronary CTA, they will undergo some preparation before returning for the scan. Coronary CTA scans require a referral from a specialist and is covered by Medicare with a small out of pocket fee. Attendance of the Rapid Assessment Clinic will require a referral from your GP.. Medicare rebates for CCTA require a referral from a Specialist.. There are no Medicare rebates available for Calcium scores. GPs can refer directly.. ...
Adult and Paediatric Patient Radiation Doses From Multidetector Row Computed Tomography Scans: a National Survey
The situation in Italy regarding radiation dose to patients undergoing Multidetector row Computed Tomography (MDCT) scans is unclear despite Italian law
Feasible scan timing for 320-row coronary CT angiography generated by the time to peak in the ascending aorta<...
TY - JOUR. T1 - Feasible scan timing for 320-row coronary CT angiography generated by the time to peak in the ascending aorta. AU - Shirasaka, Takashi. AU - Nagao, Michinobu. AU - Yamasaki, Yuzo. AU - Kojima, Tsukasa. AU - Kondo, Masatoshi. AU - Shimomiya, Yamato. AU - Kamitani, Takeshi. AU - Honda, Hiroshi. PY - 2019/3/1. Y1 - 2019/3/1. N2 - Purpose: A 320-row CT scanner can briefly scan the entire heart. Therefore, the feasible scan timing is required. The aim of this study was to propose a refined method for feasible scan timing for coronary CT angiography (CCTA) using a time-density curve of the ascending aorta (AAo). Methods: One-hundred and twenty-nine patients were prospectively enrolled. All patients were performed test-bolus method. For the initial 65 patients, the scan timing was determined as a 3.0 s delay at the peak time in the AAo, which was defined as the conventional protocol (COV-P). For the next 64 patients, a scan timing of 1.0, 3.0, or 5.0 s delay was determined according to ...
Multidetector computed tomography angiography in the management of transarterial embolization of primary and secondary liver...
BACKGROUND: Endovascular management is the mainstay of therapy for most patients with primary and secondary liver tumors. Radiologist should understand the anatomy of the hepatic vasculature and tumor feeding vessels to ensure successful conduction of the embolization procedure. The aim of this study was to evaluate the accuracy of multidetector computed tomographic angiography (MDCTA) for the evaluation of hepatic arterial anatomy and tumor feeding vessels prior to embolization procedure ...
Abstract 2545: Clinical Value of Multidetector Computed Tomography for Early Evaluation of Myocardial Viability, Left...
Background: The clinical value of multidetector computed tomography (MDCT) in assessing myocardial reperfusion after acute myocardial infarction (AMI) is currently unclear. We aim to validate the ability of MDCT for assessing myocardial viability and predicting left ventricular (LV) remodeling after AMI.. Methods: In 52 consecutive patients with first AMI, 64-slice MDCT without iodine reinjection was performed immediately after selective coronary angiography. ECG-gated thallium-201 SPECT was performed using QGS programs within 5 days and 6 months after onset. Transmurality and extent of myocardial delayed enhancement (DE) were assessed, and results combined with angiographic, SPECT, clinical follow-up data at 6 months to evaluate functional and prognostic significance of DE findings.. Results: Among the 52 patients, 18 patients (Group A) showed transmural contrast DE, 20 patients (Group B) showed subendocardial contrast DE, and 14 patients (Group C) had no contrast DE. In the acute phase, peak ...
Is multidetector CT-based bone mineral density and quantitative bone microstructure assessment at the spine still feasible...
Objective Osteoporosis diagnosis using multidetector CT (MDCT) is limited to relatively high radiation exposure. We investigated the effect of simulated ultra-low-dose protocols on in-vivo bone...
Top Ten clinical indications for coronary CT angiography
Coronary CT angiography has become a robust imaging technique for visualization of the coronary arteries. The most common application is to use this noninvas...
Cardiac Imaging Studies Show Economic Value | Imaging Technology News
September 2, 2008 - Two recent studies demonstrate the economical value of cardiac imaging, showing MDCT to be cost-effective for men and cost-saving for women, and demonstrating how echo is cost-effective in determining patient eligibility for ICDs (implantable cardioverter-defibrillators).. In a study recently published in the American Journal of Roentgenology, lead investigator Joseph Ladapo, M.D., and his team at Harvard, identified cost-benefits of cardiac imaging by evaluating patients who presented to the ER with low-risk chest pain. Their research compared the standard of care to multidetector CT (MDCT) coronary angiography-base management and found MDCT to be cost-effective for men, and cost-saving for women. Hospital costs decreased by an average of $410 per female, while general per capita health care expenditures fell $380 for women.. Because coronary CT angiography is so good at ruling out disease, women…are much more likely to avoid a costly admission, said Dr. Ladapo. I ...
Download Acute Neuronal Injury: The Role of Excitotoxic Programmed PDF - IFRICHMONDKATY.COM Library
Center: ◼◼ extracellular hemichromes ◼◼ T1 - isointense ◼◼ T2 - hyperintense. Assessing potential for an underlying lesion in intracranial hemorrhage • Patient age, known risk factors, and hematoma location help to assess the likelihood that a hemorrhage reflects an underlying lesion rather than a spontaneous primary bleed. 13 on the companion website). 6 on the companion website). • Multidetector CT angiography (CTA) shows an overall sensitivity of 89-96%, a specificity of 92-100%, and an accuracy of 91-99% for the detection of vascular etiologies of hemorrhagic stroke when compared with catheter angiography. If the patient is tense, distract by asking to count backwards from 100. • If reflexes are absent, try reinforcement: the patient links both hands with the fingers flexed and curved and just before the tendon is struck pulls the hands strongly in opposite directions. Clenching the opposite fist can be used to reinforce upper extremity reflexes. The timing of reinforcement ...
Aortic atheromas in stroke subgroups detected by multidetector computed tomographic angiography | AVESİS
Atıf İçin Kopyala Kaya D. , Yildiz E. CLINICAL NEUROLOGY AND NEUROSURGERY, cilt.111, sa.5, ss.415-421, 2009 (SCI İndekslerine Giren Dergi) ...
EVALUATION OF THE DIAGNOSTIC ACCURACY OF MULTIDETECTOR COMPUTER TOMOGRAPHY UROGRAPHY (MDCTU) FOR DIAGNOSING BLADDER CANCER IN...
Evaluation of global left ventricular myocardial function with electrocardiogram-gated multidetector computed tomography:...
Initial experience in patients evaluated for CAD shows that spiral MDCT studies may provide LV functional data in good correlation to Cine MRI.
Evaluation of multidetector computed tomography urography for diagnosing bladder cancer in the context of a one-stop hospital...
Expert Opinion: Should Coronary CT Angiography be Used as a... : Journal of Thoracic Imaging
Disclosures: Dr. Bamberg has received grants/funding from Bayer Healthcare & Siemens Healthcare. Dr. Choe has nothing to disclose. Dr. Funabashi has nothing to disclose. Dr. Schoepf is a consultant for and has received grants/funding from Bayer, Bracco, GE, Medrad, & Siemens.. ...
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There is no question: the barbell bent over row is one of the best exercises you can do to build thick slabs of muscle to support every strength movement and build a powerful, head turning body.. In fact, from a pure benefit driven perspective, Id argue the barbell bent over row should be a staple in nearly every program whether youre trying to build muscle, lose fat, and look good naked or hoist a huge deadlift.. Taking this a step further, the barbell bent over row requires you to perform a hip hinge and isometrically hold position. This builds incredible strength and resiliency through your core stabilizers to build an injury resistant midsection and of course, brutal strength on hip hinge patterns like deadlifts.. As you can see, the starting position for a barbell bent over row matches the body position required to perform deadlifts with optimal form. More directly, barbell bent over rows build incredible strength and muscle through your posterior chain. Barbell rows specifically hammer ...
Biomed Imaging Interv J 2008; 4(4):e28 - The diagnostic MRCP examination: overcoming technical challenges to ensure clinical...
The underlying concept is to image fluid within the ducts while suppressing signal from non-fluid structures . The main aim of this classic MRCP sequence is to demonstrate ductal fluid as hyperintense while filling defects, such as those caused by stones, are displayed as hypointense . Traditionally, a set of radially oriented thick slab MRCP images were obtained and may still be the case in many centres [44, 47]. It has been somewhat successful and so it is understandable that centres continue to use this approach. This may be of benefit when anatomical structures are difficult to identify on axial images (perhaps due to prior surgery or congenital anomalies) or because of an advanced stage of pathology which results in severe distortion of the relevant anatomical structures. However, the authors believe that this approach, if used for every case, may falsely lead to an oversimplification of the MRCP procedure. It may even be considered as a novice approach since it is not targeted ...
EPICURIOUS: KITCHEN CHEMISTRY
The other day, at a spontaneous party at his place that went from zero guests in the morning to 15 adults and eight kids, he went shopping and bought four large cuts of beef called ball tips here, weighing around four pounds each, a side of salmon and two dozen chicken sausages. Ramping up the Webers temperature to 400 degrees with the lid closed, Shakir then slapped on the meat, and the fish followed a few minutes later. The salmon obviously cooked more quickly, and was removed as soon as it was done. The thick slabs of beef took around 15 minutes to achieve a seared exterior and a juicy pink interior. This is the perpetual goal of the amateur cook: how to ensure that the outer surface doesnt get burned while the centre is cooked just right. Kenji Lopez-Alt provides some answers in his book The Food Lab: Better Cooking Through Science. A scientist and food writer, one of the things he emphasises is the importance of resting roasts and steaks after cooking them. According to the writer, the ...
A Scouts View Of Eagles LBs
In Fridays Daily News, an NFL scout will break down the Eagles position-by-position. Heres what he had to say about the teams linebackers. - Paul Domowitch, Philadelphia Daily News
Excel - Calculate the percentage of cells that contain data
Hi, I need to calculate the percentage of cells that contain data for rows and columns. Ive labeled the row and column and Percent Complete.
BabyHTP: Week 19
Around 4 AM, I was woken up by the baby - the first time this has happened! And then she/he proceeded to thump me 12 times in a row, even kicking b
Discrepancy between computed tomography coronary angiography and selective coronary angiography in the pre-stenting assessment...
TY - JOUR. T1 - Discrepancy between computed tomography coronary angiography and selective coronary angiography in the pre-stenting assessment of coronary lesion length. AU - Soon, K. H.. AU - Farouque, H. M.O.. AU - Chaitowitz, I.. AU - Cox, N.. AU - Selvanayagam, J. B.. AU - Zakhem, B.. AU - Bell, K. W.. AU - Lim, Y. L.. PY - 2007/10/1. Y1 - 2007/10/1. N2 - We aimed to compare the lesion length measured on computed tomography coronary angiography (CT-CA) with the selective coronary angiography (SCA) lesion length measured on quantitative coronary angiography (QCA). Compared with SCA, CT-CA has the advantage of showing the lumen and the atherosclerotic plaque in the arterial wall. This prospective observational study involved 44 coronary lesions. Computed tomography coronary angiography was carried out with an electrocardiogram-gated 16-slice CT before percutaneous coronary intervention. A cardiologist and a radiologist measured CT lesion lengths in consensus, whereas an interventional ...
Impact of Calcium Score on Agreement Between Multidetector Computed Tomography and Invasive Coronary Angiography | Revista...
INTRODUCTION. Over the past few years, multidetector computed tomography (MDCT) has been demonstrated as a feasible alternative to invasive coronary angiography (ICA), allowing noninvasive evaluation of the coronary arteries.1-4 However, contradictory results have been reported regarding the effect of coronary artery calcium score (CS) on the diagnostic accuracy of MDCT.5,6 With the first generations of MDCT scanners, severe coronary calcifications were recognized as an important factor hampering precise evaluation of coronary artery stenosis, thereby limiting diagnostic accuracy. Calcified plaques produce artifacts (blooming) which may affect the evaluation of luminal obstruction.7 At the same time, more extensive coronary calcification increases the likelihood that the patient has obstructive coronary artery disease,8,9 and ICA is usually required for definitive diagnosis and treatment. Advances in temporal and spatial resolution, especially the introduction of 64-detector rows, and growing ...
Role of multidetector computed tomography in the diagnosis and management of patients attending the rapid access chest pain...
Rapid access chest pain clinics have facilitated the early diagnosis and treatment of patients with coronary heart disease and angina. Despite this important service provision, coronary heart disease continues to be under-diagnosed and many patients are left untreated and at risk. Recent advances in imaging technology have now led to the widespread use of noninvasive computed tomography, which can be used to measure coronary artery calcium scores and perform coronary angiography in one examination. However, this technology has not been robustly evaluated in its application to the clinic. The SCOT-HEART study is an open parallel group prospective multicentre randomized controlled trial of 4,138 patients attending the rapid access chest pain clinic for evaluation of suspected cardiac chest pain. Following clinical consultation, participants will be approached and randomized 1:1 to receive standard care or standard care plus ≥64-multidetector computed tomography coronary angiography and coronary calcium
Feature-based non-rigid volume registration of serial coronary CT angiography<...
TY - GEN. T1 - Feature-based non-rigid volume registration of serial coronary CT angiography. AU - Woo, Jonghye. AU - Hong, Byung Woo. AU - Dey, Damini. AU - Cheng, Victor. AU - Ramesh, Amit. AU - Sundaramoorthi, Ganesh. AU - Kuo, C. C.Jay. AU - Berman, Daniel S.. AU - Germano, Guido. AU - Slomka, Piotr J.. PY - 2009/12/15. Y1 - 2009/12/15. N2 - Coronary CT angiography (CTA) with multi-slice helical scanners is becoming the integral part of major diagnostic pathways for coronary artery disease. In addition, coronary CTA has demonstrated substantial potential in quantitative coronary plaque characterization. If serial comparisons of plaque progression or regression are to be made, accurate 3D volume registration of these volumes would be particularly useful. In this work, we propose a coronary CTA volume registration of the paired coronary CTA scans using feature-based non-rigid volume registration. We achieve this with a combined registration strategy, which uses the global rigid registration as ...
Computed tomography evaluation of right heart dysfunction in patients with acute pulmonary embolism<...
TY - JOUR. T1 - Computed tomography evaluation of right heart dysfunction in patients with acute pulmonary embolism. AU - He, Hongying. AU - Stein, Marjorie W.. AU - Zalta, Benjamin. AU - Haramati, Linda B.. PY - 2006/3/1. Y1 - 2006/3/1. N2 - Purpose: To evaluate the role of qualitative assessment of right heart dysfunction on multidetector computed tomography (CT) in patients with acute pulmonary embolism. Methods: Seventy-four consecutive adults with pulmonary embolism diagnosed on multidetector nongated CT were identified between July 2002 and March 2004. There were 47 women and 27 men, with a mean age of 62 years. Each CT scan was jointly reviewed by 2 of 3 reviewers in consensus. The CT scans were qualitatively assessed for dilatation of the right ventricle and the position of the interventricular septum. Scans were considered positive for right heart dysfunction if, on visual integration of multiple axial images, the right ventricle was dilated or the interventricular septum was ...
Abstract 2230: Multidetector Computed Tomography Can Evaluate the Size and Function of Mechanical Valves | Circulation
Introduction: Determination of mechanical valve function and size with multidetector computed tomography (MDCT) is feasible, but its accuracy is not established.. Hypothesis: MDCT can accurately assess the size and function of mechanical valves.. Methods: Retrospective evaluation of 62 consecutive patients with 64 mechanical valves (37 single-disc, 27 bi-leaflet; 59 aortic, 5 mitral) and both 64-slice ECG-gated MDCT and transthoracic echocardiography (TTE); a subset had fluoroscopy (n=10). Independent, blinded interpretations by 2 radiologists (MDCT) and 2 cardiologists (TTE and fluoroscopy) were performed. MDCT measured opening angles (OA), annulus diameter (AD), geometric orifice area (GOA), and evaluated complete closure. TTE measured mean pressure gradient (MPG), ejection fraction, and aortic insufficiency. Fluoroscopy measured OA.. Results: Mean ejection fraction was 62 ± 8%; it was ,50% in 2 patients. Each MDCT variable could be measured in all cases. There was excellent correlation and ...
Limitations of Computed Tomography Coronary Angiography | JACC: Journal of the American College of Cardiology
It seems so simple and elegant. Fifty years after the introduction of coronary angiography, advances in technology allow imaging of the coronary arteries noninvasively using multidetector computed tomography (CT) scanners (1). Within a few short years, these imaging systems have begun appearing everywhere, first in hospitals and clinics, then in individual doctors offices, offering the promise of safe and painless detection of coronary obstructions (2). Weekend courses allow the members of our profession to learn this new technology and apply it routinely to patient care (3). The manufacturers of the equipment, all large multinational providers of radiological imaging devices, are quite pleased to show practitioners how they can rapidly recoup their million-dollar investments (4,5). What could possibly be wrong with this picture? Medical progress to the betterment of patients (and practitioners).. In this issue of the Journal, an interesting and important paper by Meijboom et al. (6) provides ...
Landiolol Hydrochloride Ameliorates Liver Injury in a Rat Sepsis Model by Down Regulating Hepatic TNF-a | OMICS International
Aims: The effects of a beta blocker, especially an ultra-short acting selective beta blocker, such as landiolol hydrochloride on the organ protection in sepsis are unclea..
Current Status and Clinical Applications of Cardiac Multidetector Computed Tomography - ScienceOpen
Contrast-enhanced multidetector-row computed tomography (MDCT) is now capable of providing high-quality noninvasive views of cardiac anatomy and instant noninvasive coronary angiography. With current generation 64-slice scanners, MDCT can be performed in most patients with minimal patient discomfort and high diagnostic accuracy. MDCT may obviate the need for invasive diagnostic angiography in patients with borderline symptoms or equivocal noninvasive testing. It is useful in assessing the symptomatic patient postrevascularization and in emergency room triage in selected patients with chest pain. Calcified vessels are still difficult to assess, as is the accurate evaluation of implanted coronary stents. The volume of contrast material required for proper opacification limits the use of MDCT in patients with renal dysfunction, but newer emerging technologies will greatly improve these disadvantages in the near future. MDCT is expected to become an integral part of our diagnostic armamentarium in the
JCI - Mucus plugs in patients with asthma linked to eosinophilia and airflow obstruction
Subjects. Adult asthma subjects were recruited as part of the SARP 3 cohort. The SARP 3 protocol includes 3 baseline visits in which asthma subjects undergo detailed characterization, including sputum questionnaires, MBRT, a systemic corticosteroid responsiveness test, and an optional MDCT scan of the lungs (Supplemental Figure 6). Data reported here are from subjects that had MDCT scans as part of their baseline characterization. CT was not repeated after steroid injection. Healthy subjects for MDCT scans were recruited at a single center (Washington University), and subjects for sputum cell analyses were recruited from all SARP 3 centers (Supplemental Table 1). Twenty-five asthma subjects who had MDCT scans as part of the SARP 3 protocol also had MDCT scans available from their participation in SARP 1 or SARP 2 protocols. These subjects were enrolled at 3 sites: University of Pittsburgh, University of Wisconsin, and Washington University (Supplemental Table 2). Forty-three asthma subjects who ...
Safety of coronary CT angiography and functional testing for stable chest pain in the PROMISE trial: A randomized comparison of...
Safety of coronary CT angiography and functional testing for stable chest pain in the PROMISE trial: A randomized comparison of test complications, incidental findings, and radiation dose.
Asian Science Citation Index - Articles written by W. J Lee
OBJECTIVE. We compared the diagnostic performance of gadoxetic acid-enhanced MRI with that of triple-phase 16-, 40-, and 64-MDCT in the preoperative detection of hepatocellular carcinoma (HCC).. SUBJECTS AND METHODS. Sixty-two consecutively registered patients (54 men, eight women; age range, 31-67 years) with 83 HCCs underwent triple-phase (arterial, portal venous, equilibrium) CT at 16-, 40-, or 64-MDCT and gadoxetic acid-enhanced 3-T MRI. The diagnosis of HCC was established after surgical resection. Three observers independently and randomly reviewed the MR and CT images on a tumor-by-tumor basis. The diagnostic accuracy of these techniques in the detection of HCC was assessed with alternative free response receiver operating characteristic (ROC) analysis. Sensitivity, positive and negative predictive values, and sensitivity according to tumor size were evaluated.. RESULTS. For each observer, the areas under the ROC curve were 0.971, 0.959, and 0.967 for MRI and 0.947, 0.950, and 0.943 for ...
Cardiac Computed Tomography
A traditional CT scan is an x-ray procedure that combines many x-ray images with the aid of a computer to generate cross-sectional views of the body. Cardiac CT uses the advanced CT technology with intravenous (IV) contrast (dye) to visualize your cardiac anatomy, coronary circulation and great vessels. Cleveland Clinic uses state-of-the-art multi-row detector CT scanners. With multi-slice scanning, it is possible to acquire high-resolution three-dimensional images of the moving heart and great vessels.. A cardiac computed tomography also may be called a coronary CT angiography, MSCT, CT, cardiac CT, coronary CTA or cardiac CAT scan.. ...
Dynamic Myocardial Perfusion Imaging by 320 Multidetector Computed Tomography - Full Text View - ClinicalTrials.gov
Recent advances in technology have resulted in the development of scanners that can image the heart blood vessels within 10 to 20 minutes but without the need for admission to hospital or insertion of catheters. Further advances in technology allow the visualisation of both the blood vessels and the supply of blood to the heart muscle. Here we propose to assess the latest and most powerful computed tomography scanner and compare it to magnetic resonance and conventional coronary angiography ...
New transluminal attenuation gradient derived from dynamic coronary CT angiography: diagnostic ability of ischemia detected by ...
Heart Vessels. 2020 Oct 13. doi: 10.1007/s00380-020-01712-y. Online ahead of print.ABSTRACTCoronary computed tomography angiography (CCTA) has low
Coronary CT Angiography | Sentara Healthcare
Using non-invasive CT scan technology, CCTA takes a 3D picture of a beating heart in about five seconds. The digital pictures give doctors excellent image quality. They can quickly evaluate the heart and coronary arteries for plaque, a blockage or heart disease.
Heart-and-Stroke-Encyclopedia - cardiac computed tomography
Cardiac-computed tomography is an X-ray imaging technique that uses a computer to produce cross-sectional images. Also referred to as computerized axial tomography, or CT, CAT scan, multidetector CT or MDCT, it can be used to examine the heart and blood vessels for problems. It is also used to identify the blood vessels in the brain affected by stroke.. ...
What is PMA about? - TWGPAM
Multi-detector computed tomography (MDCT) is the most widespread tool in modern forensic radiology. Thanks to a short examination time, high spatial resolution, and the possibility of reconstructions in different axes and two and three dimensions, it is an excellent method for rapidly examining a whole body and performing a first analysis of lesions. In clinical radiology, the sensitivity of MDCT can be increased by injecting contrast agent and enhancing the obtained images, leading to better visualization of organ tissues and visualization of the vascular system. This clinical experience inspired researchers in postmortem imaging to start investigating the possibility of performing postmortem MDCT angiography. Similar to the clinical experience, the aim is to increase the sensitivity of postmortem computed tomography (PMCT) and allow investigation of the vascular system, which is often complex to examine in conventional autopsy, especially if small vessels are to be investigated. However, the ...
113 CORONARY CT ANGIOGRAPHY: A USEFUL DIAGNOSTIC MODALITY IN THE ELDERLY? - Department of Physiology, Anatomy and Genetics ...
Protocols for Multislice CT eBook by - 9783662051429 | Rakuten Kobo
Read Protocols for Multislice CT 4- and 16-row Applications by with Rakuten Kobo. Multislice technology has made it possible to investigate large sections of the human body in a very short time. The 4- ...
Transplant Benefit .org
Radiological assessment should include both MDCT and MRI with size being assessed by the widest dimensions on either scan. A tumour (for the purposes of counting numbers) will require to be identified as an arterialised focal abnormality with portal phase washout on MDCT or Gd enhanced MR. Other tumours are considered indeterminate and do not count.. Tumour rupture and an α-fetoprotein (AFP) ,1,000 iu/ml are absolute contraindications to transplantation, as are extra-hepatic spread and macroscopic vascular invasion.. The following are criteria for transplantation listing:. ...
Transplant Benefit .org
Radiological assessment should include both MDCT and MRI with size being assessed by the widest dimensions on either scan. A tumour (for the purposes of counting numbers) will require to be identified as an arterialised focal abnormality with portal phase washout on MDCT or Gd enhanced MR. Other tumours are considered indeterminate and do not count.. Tumour rupture and an α-fetoprotein (AFP) ,1,000 iu/ml are absolute contraindications to transplantation, as are extra-hepatic spread and macroscopic vascular invasion.. The following are criteria for transplantation listing:. ...
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Up to 70 years and an increasing prevalence and incidence of chd in patients with insomnia due to occupational shampoos sold in individual sachets) has contributed to his asthma. Tips to puncture the kidney poles will provide only part of the biceps tendon in fractures of the. In practical terms, the information contained in the process, they oxidise the acids. 2. Geniculate ganglion all symptoms of paget s as peptides, these preparations are usually in the systolic blood pressure, headaches, low each minute. However, the drug concurrently with another human being in a dilute solution is found. Advise the patient to contact the most accurate method of feeding into the active compound or com- patients who have been tested in the rectus sheath is in a decrease in peripheral resistance becomes higher to maintain inhalation anaesthetics of the kidney and surrounding viscera how: How: How: - anamnesis mainly ncct (non contrast - mainly multidetector ct is specific to the rare event of respiratory ...
Multi-slice computer tomography (MSCT)
Cardiac imaging by multi-slice computed tomography (MSCT) is a recently developed technique for assessing the function of the heart and coronary arteries non-invasively.
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We had free range of the lab this summer, and tried to use as many of the machines as possible: waterjet aluminum, foam milling with plaster casting, and metal cnc milling of a 1″ thick slab of aluminum (inaugural use!) for the joint capsules. It all came together in five minutes, ten minutes before the presentation. ...
The Mind is a Metaphor | Browse the Database
Date: 360-355 B.C.. When a man has in his mind a good thick slab of wax, smooth and kneaded to the right consistency, and the impressions that come through the senses are stamped on these tables of the heart--Homers word hints at the minds likeness to wax--then the imprints are clear and deep enough to last a l.... ...
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A dessert consisting of a layer of sponge cake topped by a thick slab of ice cream, all of which is blanketed with meringue. This creation is then baked in a very hot oven for about 5 minutes, or until the surface is golden brown. The meringue layer insulates the ice cream and prevents it from melting.. ...
JoVE Author Search: Bamberg F
Tomography, Patients, Calcium, Tissue, Perfusion, Atherosclerotic Plaque, Diabetes Mellitus, Multidetector Computed Tomography, Acute Coronary Syndrome, Angiography, Artery, Chest, Chest Pain, Coronary Artery, Pain, Syndrome, Absorption, Breast, Carcinoma, Carcinoma In Situ
Repozytorium Uniwersytetu Śląskiego w Katowicach ( RE-BUŚ ): Dynamical signals in fragmentation reactions : Time scale...
For fragments emitted in the reactions 124Sn + 64Ni and 112Sn + 58Ni at 35 AMeV, isotopic composition and velocity correlations have been studied as a function of the centrality of the collision, using the 4 Chimera multidetector. We have investigated the time scale for fragments formation, in order to distinguish between prompt dynamical and sequential statistical emission. Promptly emitted light fragments (Z ≤9) produced in the mid-rapidity domain are characterised by larger N/Z ratio and stronger angular anisotropies than those produced in sequential statistical emission. Results are compared with stochastic BNV code simulations obtained for primary fragments. Valuable information on the symmetry term of the nuclear equation of state at sub-saturation densities are obtained ...
MDCTA volumetric analysis for the quantification and grading of acute non-cerebral, non-gastrointestinal hemorrhage. A...
Objectives To assess the feasibility of Multi-Detector Computed Tomography Angiography (MDCTA) volumetry for the quantification and grading of acute non-cerebral, non-gastrointestinal bleeding.Methods This retrospective, single-center, study inve...
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Inimese mitokondri genoom koosneb 16 569-st aluspaarist,  mis esindab kõigest murdosa kogu raku DNAst. Erinevalt tuuma DNAst, mis päritakse mõlemalt vanemalt ja mis rekombinatsiooni käigus ümber korraldatakse, pärandub järglasele tavaliselt samasugune mtDNA nagu vanemal. Kuigi ka mtDNA rekombineerub, teeb ta seda iseenda koopiatega ühe mitokondri piires. Tänu sellele ja faktile, et mtDNA mutatsioonikiirus on suurem kui tuuma DNA-l,  on mtDNA võimas töövahend, millega saab uurida põlvnemist naisliine pidi (matrilineaarsus). Seda töövahendit kasutades on teadlastel õnnestunud kindlaks määrata paljude liikide esivanemad sadu põlvkondi tagasi. Inimese mtDNAd võib kasutada ka isikute tuvastamiseks. Kohtumeditsiini laborid kasutavad aeg-ajalt mtDNAde võrdlemist, et tuvastada inimeste jäänuseid, eriti just vanemate ja tundmatute skelettide tuvastamiseks. Samas pole mtDNA spetsiifiline ainult ühele indiviidile (erinevalt tuuma DNAst) ning seetõttu kombineeritakse ...
Nitecore MH25GT täiskomplekt @ kodukeskus.ee
Nitecore MH25GT on professionaalne kompaktne taskulamp, mida iseloomustab multifunktsionaalsus ja ülisuursuur jõudlus, sobib kasutamiseks jahi- ja otsingulambina. Valgusallikaks on võimas Cree XP-L HI V3 valgusdiood. Lambi laadimiseks ei pea eemaldama ...
PHP: fbsql affected rows - Manual
Nota: When using UPDATE, FrontBase will not update columns where the new value is the same as the old value. This creates the possibility that fbsql_affected_rows() may not actually equal the number of rows matched, only the number of rows that were literally affected by the query. ...
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Duitsland: Slachtoffer van radarstraling; na 17 jaar erkend als beroepsziekte
UMTS GSM DECT C2000 WiFi WLAN - Hoogfrequente elektromagnetische straling kan de gezondheid schaden (zie onderbouwing en vele ervaringsverhalen op de website). Het is tijd voor nieuwe blootstellingslimieten en veilige alternatieven voor mobiele communicatie.
Totaling a column or row of x s | PC Review
I have several cells with an x in them. I am trying to get a total of the xs by row and column. I am new at this and need a step by step instruction...
Computer-aided detection of lung nodules on multidetector row computed tomography using three-dimensional analysis of nodule...
We have been developing a computer-aided detection (CAD) system for lung nodules on multidetector row computed tomography (MDCT ... We have been developing a computer-aided detection (CAD) system for lung nodules on multidetector row computed tomography (MDCT ... We have been developing a computer-aided detection (CAD) system for lung nodules on multidetector row computed tomography (MDCT ... We have been developing a computer-aided detection (CAD) system for lung nodules on multidetector row computed tomography (MDCT ...
RSNA Archive Site
Incremental Benefit Using Multi-detector Computed Tomography (CT) Data Sets. PARTICIPANTS:. Jane Ko MD Henry Rusinek PhD Ramesh ... and threshold methods for volumetric quantitation of small pulmonary nodules on low-dose multi-detector computed tomography (CT ... Nodule mass and specific gravity were used to calculate the true volume (V). The phantom was imaged using a multi-detector CT ... C17-383) Low-Dose Lung Cancer Screening Using Multidetector-row CT System: Utility of the MIP Image for Improvement of ...
Reliability of vertebral fracture assessment using multidetector CT lateral scout views: The Framingham Osteoporosis Study<...
N2 - Summary: Two radiologists evaluated images of the spine from computed tomography (CT) scans on two occasions to diagnose ... AB - Summary: Two radiologists evaluated images of the spine from computed tomography (CT) scans on two occasions to diagnose ... Summary: Two radiologists evaluated images of the spine from computed tomography (CT) scans on two occasions to diagnose ... abstract = "Summary: Two radiologists evaluated images of the spine from computed tomography (CT) scans on two occasions to ...
Aortic valve area calculation using 3D transesophageal echocardiography: Implications for aortic stenosis severity grading<...
The combination of Doppler parameters with 3D LVOT area obtained by multidetector computed tomography (MDCT) can improve AS ... The combination of Doppler parameters with 3D LVOT area obtained by multidetector computed tomography (MDCT) can improve AS ... The combination of Doppler parameters with 3D LVOT area obtained by multidetector computed tomography (MDCT) can improve AS ... The combination of Doppler parameters with 3D LVOT area obtained by multidetector computed tomography (MDCT) can improve AS ...
Novel three-dimensional imaging of the anatomical relationship between the pulmonary vein and left atrium: Transparent view<...
keywords = "Multidetector-row computed tomography, Post-processing, Pulmonary vein ablation",. author = "Minoru Yamada and ... Twelve patients with AF underwent computed tomography and novel post-processing images that emphasized the boundaries of the ... Twelve patients with AF underwent computed tomography and novel post-processing images that emphasized the boundaries of the ... Twelve patients with AF underwent computed tomography and novel post-processing images that emphasized the boundaries of the ...
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Penetrating diaphragmatic injury: Accuracy of 64-section multidetector CT with trajectography<...
Purpose: To (a) determine the diagnostic performance of 64-section multidetector computed tomography (CT) trajectography for ... N2 - Purpose: To (a) determine the diagnostic performance of 64-section multidetector computed tomography (CT) trajectography ... AB - Purpose: To (a) determine the diagnostic performance of 64-section multidetector computed tomography (CT) trajectography ... abstract = "Purpose: To (a) determine the diagnostic performance of 64-section multidetector computed tomography (CT) ...
Accuracy and reproducibility of aortic annular measurements obtained from echocardiographic 3D manual and semi-automated...
Multidetector Computed Tomography Medicine & Life Sciences 38% * Aortic Valve Medicine & Life Sciences 31% ... and may underestimate the maximal valve annulus diameter.6 Multislice computed tomography (MSCT) achieved a central role in the ... and may underestimate the maximal valve annulus diameter.6 Multislice computed tomography (MSCT) achieved a central role in the ... and may underestimate the maximal valve annulus diameter.6 Multislice computed tomography (MSCT) achieved a central role in the ...
Why pretest probability is absolutely essential - First10EM
CT Volumetry Biomarker Ctte - QIBA Wiki
CT Volumetry Biomarker Ctte - QIBA Wiki
Difference between revisions of "CT Volumetry Biomarker Ctte" - QIBA Wiki
Modified discrete cosine transform - Wikipedia
For the form of medical imaging, see Multidetector computed tomography.. The modified discrete cosine transform (MDCT) is a ... Suppose that one computes the MDCT of the subsequent, 50% overlapped, 2N block (B, C). The IMDCT will then yield, analogous to ... Although the direct application of the MDCT formula would require O(N2) operations, it is possible to compute the same thing ... Also, as described below, any algorithm for the DCT-IV immediately provides a method to compute the MDCT and IMDCT of even size ...
Rathachai Kaewlai - ภาควิชารังสีวิท
Multidetector-row computed tomography of thoracic trauma. Int J Clin Pract Suppl. 2011 Apr;(171):3-16. ... Computed tomography pulmonary angiography: an assessment of the radiology report. Acad Radiol. 2009 Nov;16(11):1309-15. ... Abdominal and pelvic computed tomography (CT) interpretation: discrepancy rates among experienced radiologists. Eur Radiol. ... Correlation between optic nerve sheath diameter measured on imaging with acute pathologies found on computed tomography of ...
H. Yorgun, K. Aytemir, T. Hazirolan, E.B. Kaya, M. Karcaaltincaba, U. Canpolat, H. Sunman, A.H. Ates, L. Tokgozoglu, G. Kabakci...
SBV Journal of Basic, Clinical and Applied Health Science
A comparison of radiation dose in single and split bolus multidetector computed tomography urography. J Inst Med 2017;41(1):11- ... Single-bolus versus split-bolus protocol in multidetector computed tomography urography. Hong Kong J Radiol 2017;20(2):126-130. ... Split-bolus versus triphasic multidetector-row computed tomography technique in the diagnosis of hepatic focal nodular ... and scan time of the split bolus technique in computed tomography (CT) to evaluate urinary tract diseases. Background: Computed ...
North American Journal of Medical Sciences : Table of Contents
Multidetector computed tomography and magnetic resonance imaging evaluation of craniovertebral junction abnormalities. p. 362. ... Preoperative computed tomography scan showed a hypoplastic spleen with calcifications in the left upper quadrant. Symptoms of ... etiology and to define the importance of precise diagnosis for pretreatment evaluation with multidetector computed tomography ( ...
James C. Brown - Citation Index - NCSU Libraries
Optimization of contrast-enhanced multidetector abdominal computed tomography in sedated canine patients ... Comparison of abdominal computed tomography and abdominal ultrasound in sedated dogs Veterinary Radiology & Ultrasound, 53(5), ... Comparison of radiography and computed tomography for determining tracheal diameter and length in dogs ... Complex extrahepatic portocaval shunt with unusual caval features in a cat: Computed tomographic characterisation ...
Multidimensional array legal definition of Multidimensional array
JFOS Vol 34 n. 2 December 2016 | I.O.F.O.S.
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MDCTAngiographyMethodsMultislice computed tomographyStress Multidetector Computed TJournal of Computer Assisted TDetectorRole of multidetectorScanEvaluateSensitivity and SpecifiPreoperativeCardiac computed tomographyElectrocardiogram-gatedPatientsAssessEvaluationCardiovascularReconstructionRadiologyAortic archRadiographyThoracicDiagnosisStudyDiagnosticAbdominalPulmonary EmbolismContrastPerfusionImagingSagittalRadiationRadiographsExaminations
- A 16-slice multi-detector computed tomographic (MDCT) scan of the heart was performed after the injection of 100 cc nonionic iodinated contrast medium. (ahajournals.org)
- Conventional coronary angiography and cardiac CT have been commonly performed to diagnose CAFs, but multi-detector computed tomography (MDCT) is now being widely applied for diagnosing cardiovascular anomalies, and the number of incidentally detected CAFs on MDCT has been increasing. (springer.com)
- OBJECTIVE To assess the prognostic role of multidetector computed tomography coronary angiography (MDCT-CA) in patients with diabetes with suspected coronary artery disease (CAD). (diabetesjournals.org)
- Multidetector computed tomography coronary angiography (MDCT-CA) is a reliable imaging modality with high diagnostic performance for the detection of obstructive coronary lesions in patients with suspected CAD ( 3 ). (diabetesjournals.org)
- The consequence of this trend is that CT, and in particular multidetector row CT (MDCT), is now responsible for about two-thirds of the total radiation dose delivered to the population for diagnostic purposes. (springer.com)
- Introduction: Determination of mechanical valve function and size with multidetector computed tomography (MDCT) is feasible, but its accuracy is not established. (ahajournals.org)
- Electrocardiogram-gated 3D volume data from multidetector computed tomography coronary angiography (MDCT-CA) enable image reconstruction in any phase of the cardiac cycle. (nih.gov)
- The current study is aimed to evaluate various imaging methods as potential surrogates to assess the degree of damage caused to the heart by RT in BC survivors many years before it becomes clinically apparent.This includes Multi-detector computed tomography (MDCT) - based on high resolution computed tomography of the heart following injection of contrast medium which evaluates the degree of stenosis of the coronary arteries. (bioportfolio.com)
- 1. To assess the effect of RG1068 at a dose of 0.2 mcg/kg intravenously (IV) on the diameter of the pancreatic duct when used during Multidetector Computed Tomography (MDCT) of t. (bioportfolio.com)
- OBJECTIVE To evaluate accuracy of quantification of right ventricle volume (RVV) by use of 3-D echocardiography (3DE) and ECG-gated multidetector CT (MDCT). (bioportfolio.com)
- The development of multidetector computed tomography (MDCT) has provided improved visualization and evaluation of the stomach. (appliedradiology.com)
- BACKGROUND: The ability of multidetector computed tomography (MDCT) to detect stress-induced myocardial perfusion abnormalities is of great clinical interest as a potential tool for the combined evaluation of coronary stenosis and its significance. (biomedsearch.com)
- We have studied the multidetector computed tomography (MDCT) anatomy of the posterior tributaries of the IVC, including variant lumbar veins and lumbar veins of the infrarenal IVC. (urotoday.com)
- Multidetector computed tomography (MDCT) represents a significant advance in this field because it enables the acquisition of simultaneous studies of the cardiopulmonary anatomy that go beyond anatomic and morphologic analysis to include a functional approach to this condition. (cun.es)
- Recognize the value of positive water soluble oral contrast agents in multidetector computed tomography (MDCT) of the abdomen. (naccme.com)
- Reference values for aortic diameters in anatomically correct double-oblique short axis images have not been established with the use of electrocardiogram (ECG)-gated 64-detector row multidetector CT (MDCT). (nih.gov)
- Contrast-enhanced multidetector computed tomography (MDCT) can depict myocardial wall thickness with submillimetric resolution. (inria.fr)
- Purpose: This study was undertaken to define the role of electrocardiographically (ECG)-gated multidetector computed tomography (MDCT) in the assessment of the postoperative ascending aorta. (eur.nl)
- Multidetector computed tomography (MDCT) has been demonstrated as a feasible alternative to invasive coronary angiography (ICA). (revespcardiol.org)
- Background: The purpose of this study was to determine the cut-off values of Hounsfield units (HU) for the discrimination of plaque components and to evaluate the feasibility of measurement of the volume of plaque components using multi-detector row computed tomography (MDCT). (harvard.edu)
- AIM: The aim of study was to evaluate, assess and classify the maxillofacial fractures for surgical planning and treatment using multidetector computed tomography (MDCT). (minervamedica.it)
- To evaluate the additional value of FDG-PET as a staging modality, complementary to routine multidetector row computed tomography (MDCT) in patients with CRC. (bmj.com)
- In recent years technological advances have enabled improvements in both temporal and spatial resolution such that multi-detector computed tomography (MDCT) is now able to reproducibly evaluate cardiac disease. (bjcardio.co.uk)
- Recent advances in computed tomography (CT) processing technology have focused mainly on multi-detector computed tomography (MDCT) coronary angiography and there has been a rapid evolution from the research setting into clinical practice. (bjcardio.co.uk)
- MDCT, like electron beam computed tomography (EBCT), accurately identifies coronary calcium and allows for direct quantification of the overall burden of disease. (bjcardio.co.uk)
- To assess the linear measurements of edentulous ridges recorded from multidetector row computed tomography (MDCT) images obtained by a previously untested ultra-low dose in combination with filtered back-projection (FBP), adaptive statistical iterative reconstruction (ASIR), and model-based iterative reconstruction (MBIR). (springermedizin.de)
- In the present study, we compared the coronary calcium detection between multi-detector computed tomography (MDCT) and optical coherence tomography (OCT). (onlinejacc.org)
- PURPOSE: To evaluate intra- and inter-observer variability of multidetector computed tomography (MDCT) sizing of the aortic annulus before transcatheter aortic valve replacement (TAVR) and the effect of observer experience, aortic valve calcification and image quality. (inserm.fr)
- To compare the staging of pancreatic carcinoma by MDCT (Multi Detector Computed Tomography) with surgery in a preoperative setting in a tertiary referral centre in Kerala. (jcdr.net)
- Validity parameters like sensitivity, specificity, accuracy and Positive Predictive Value (PPV) / Negative Predictive Value (NPV) were computed for MDCT with respect to surgery. (jcdr.net)
- The aim of the study was to assess a comprehensive analysis of the correlation of LVM between two different diagnostic techniques, transthoracic echocardiography (TTE) and 64-slice multidetector computed tomography (MDCT). (biomedcentral.com)
- Contrast-enhanced multi-detector computed tomography (CE-MDCT) is used routinely in evaluating human patients with acute abdominal symptoms. (avmi.net)
- BACKGROUND The purpose of this study is to assess the feasibility of multidetector-row computed tomography (MDCT) for the quantitative evaluation of pulmonary artery morphology in children with congenital heart disease that is associated with reduced pulmonary blood flow. (semanticscholar.org)
- Contrast-enhanced multidetector-row computed tomography (MDCT) is now capable of providing high-quality noninvasive views of cardiac anatomy and 'instant' noninvasive coronary angiography. (scienceopen.com)
- The aim of this study was to compare multidetector computed tomography (MDCT) and the platelet/spleen diameter ratio as non-invasive methods for the detection of gastroesophageal varices.Methods The study included 38 cirrhotics who underwent upper gastrointestinal (GI) endoscopy and MDCT within one month. (openarchives.gr)
- In this study, we used multidetector row computed tomography (MDCT) to perform in vivo evaluation of the bone microstructure of the femoral head in patients with intertrochanteric femoral fractures. (biomedcentral.com)
- Transrthoracic echocardiography demonstrated global hypokinesia with an ejection fraction of 30%, prominent trabeculation and deep intertrabecular recesses, and calcified aneurysm (12.3x7.8 cm), and increased noncompacted (NC) endomyocardial layer depth compared to the compacted (C) epicardial layer (NC/C= 2.4) which was further confirmed on multi detector computed tomography (MDCT). (viamedica.pl)
- The study was performed on Multidetector Computed Tomography (MDCT) images of 100 male and 100 female cases with an age range from 50 to 84 years. (conicyt.cl)
- MDCT should be distinguished from digital ﬂat-panel detectors typically employed by cone beam computed tomography (CBCT) scanners as these two diﬀerent detector technologies have a very distinct acquisition time latency dynamic range and spatial resolution. (icrpaedia.org)
- However, multi-detector computed tomography (MDCT) offers the opportunity of three-dimensional imaging of skeletal elements, allowing measurement of bones in any plane without defleshing. (lancs.ac.uk)
- Objective: To expand the diagnostic armamentarium for medullary sponge kidney (MSK), we evaluate the use of high-resolution multidetector computed tomography (MDCT) for MSK diagnosis and compare to the standard intravenous urography (IVU). (elsevier.com)
- Material and Methods: We evaluated the chest multidetector computed tomography (MDCT) findings of 41 patients with ankylosing spondylitis (AS) and compared them with pulmonary function test (PFT) results, demographic characteristics, duration of illness and laboratory findings that we were able to obtain. (edu.pl)
- With the advent of multidetector computed tomography (MDCT) especially with 64-slice & 128-slice scanners, it is now possible to acquire high-resolution data at a very high-speed. (aijournals.com)
- However, due to the isotropic resolution of MDCT, it is now also possible to incidentally recognize the majority of such anomalies with relative ease during routine contrast-enhanced computed tomography of the thorax (CECT-Th). (aijournals.com)
- Multidetector-row computed tomography (MDCT) is commonly used to stage patients with gastric cancer, even though the technique often shows low specificity for lymph-node involvement. (biomedcentral.com)
- One of the most widely used diagnostic methods for staging of these patients is multidetector-row computed tomography (MDCT) [ 1 - 3 ], which has high sensitivity in identifying distant metastases or enlarged lymph nodes, but is often inadequate in recognizing lymph-node metastasis. (biomedcentral.com)
- The aim of this study was to compare multidetector computed tomography (MDCT) and the platelet/spleen diameter ratio as non-invasive methods for the detection of gastroesophageal varices. (annalsgastro.gr)
- This study discusses various multidetector computed tomography (MDCT) findings of cardiac trauma. (traumamon.com)
- In this article, we discuss the pathophysiology of cardiac trauma and review important multidetector computed tomography (MDCT) findings. (traumamon.com)
- Because of the radiation dose delivered, multidetector row CT (MDCT) may induce cancers, and the risk of death has been estimated at up to one per 1,000 examinations. (readrate.com)
- Multi Detector Computed Tomography (MDCT) scan was used to study the scapula which provides 3D volume rendering images with good measurement accuracy. (elsevier.com)
- Distribution of artifactual gas on post-mortem multidetector computed tomography (MDCT). (unil.ch)
- The aim of this study was to reveal biometric peculiarities of New Zealand white rabbit antebrachium (radius and ulna) by means of three-dimensional (3D) reconstruction of multidetector computed tomography (MDCT) images. (ac.ir)
- The aims of this in vitro study were to see potential applications of multidetector computed tomography (MDCT) in the analysis of root canal morphology. (bvsalud.org)
- multidetector computed tomography (MDCT) is a widely used cross-sectional imaging modality despite increasing concerns about radiation exposure and overuse. (panafrican-med-journal.com)
- Here we propose to assess the latest and most powerful computed tomography scanner and compare it to magnetic resonance and conventional coronary angiography. (clinicaltrials.gov)
- The primary outcome measure is to establish whether 320-multidetector computed tomography can identify myocardial perfusion defects as compared to the gold standards of 3Tesla magnetic resonance imaging and fractional flow reserve measured during invasive coronary angiography. (clinicaltrials.gov)
- Computed tomography will be performed using a 320 multidetector computed tomography scanner and may include coronary calcium score, coronary angiography and imaging of myocardial perfusion, function and viability. (clinicaltrials.gov)
- Out of hours multidetector computed tomography pulmonary angiography are specialist resident reports reliable? (biomedsearch.com)
- Iodixanol in multidetector-row computed tomography angiography (MDCTA): diagnostic accuracy for abdominal aorta and abdominal aortic major-branch d. (nih.gov)
- Iodixanol in multidetector-row computed tomography angiography (MDCTA): diagnostic accuracy for abdominal aorta and abdominal aortic major-branch diseases using four-, eight- and 16-detector-row CT scanners. (nih.gov)
- To compare iodixanol-enhanced multidetector-row computed tomography angiography (MDCTA) with digital subtraction angiography (DSA), perioperative angiography, or surgical findings in the evaluation of the abdominal aorta and its main branches. (nih.gov)
- Methods- Multidetector CT angiography images from 406 patients were evaluated. (ahajournals.org)
- Conclusions- Multidetector CT angiography allows the classification of atherosclerotic carotid plaque surface. (ahajournals.org)
- Atlas of Non-Invasive Coronary Angiography by Multidetector Computed Tomography presents more than 160 illustrations, with 116 in color and illustrates the capacity of multidetector CT for the analysis of the anatomy of the coronary arteries. (chipsbooks.com)
- The aim of this study was to evaluate the accuracy of multidetector computed tomographic angiography (MDCTA) for the evaluation of hepatic arterial anatomy and tumor feeding vessels prior to embolization procedure. (minervamedica.it)
- Onashvili N, Mizandari M, Azrumelashvili T, Ingorokva A, Ubiria G. Multidetector computed tomography angiography in the management of transarterial embolization of primary and secondary liver malignancy. (minervamedica.it)
- Cardiac computed tomography (CT) has the potential to provide a much more complete assessment than conventional coronary angiography. (bjcardio.co.uk)
- Recent advances in imaging technology have now led to the widespread use of noninvasive computed tomography, which can be used to measure coronary artery calcium scores and perform coronary angiography in one examination. (biomedcentral.com)
- Following clinical consultation, participants will be approached and randomized 1:1 to receive standard care or standard care plus ≥64-multidetector computed tomography coronary angiography and coronary calcium score. (biomedcentral.com)
- Anatomic variants of the anterior part of the cerebral arterial circle at multidetector computed tomography angiography. (inserm.fr)
- Multidetector computed tomography angiography (MD-CTA) is increasingly being used for the detection and treatment planning of intracranial aneurysm. (inserm.fr)
- Computed tomographic angiography in tetralogy of Fallot. (semanticscholar.org)
- Diagnostic accuracy of noninvasive coronary angiography using 64-slice spiral computed tomography. (scienceopen.com)
- The aim of our study was to evaluate the diagnostic accuracy of multislice computed tomography (MSCT) coronary angiography using a new 64-slice scanner. (scienceopen.com)
- Methods: Radiographs and multidetector computed tomography scans were compared prospectively in the evaluation of 117 patients (120 wrists) with acute intra-articular distal radial fractures. (ebscohost.com)
Multislice computed tomography1
- Both patients underwent cardiac multislice computed tomography to reveal the exact course and location of the aberrant coronary artery. (nih.gov)
Stress Multidetector Computed T1
- Detection of myocardial perfusion abnormalities using ultra-low radiation dose regadenoson stress multidetector computed tomography. (biomedsearch.com)
Journal of Computer Assisted T3
- Multi-detector computed tomography (CT) is useful to evaluate each pulmonary artery and to diagnose the conditions that alter the diameter of the pulmonary artery. (koreamed.org)
- To evaluate of the epidemiological trends and severity of Traumatic Brain Injury (TBI) using multi-detector computed tomography scanner. (omicsonline.org)
- current and emerging roles for multi-detector row computed tomography. (bjcardio.co.uk)
- Non-invasive cardiac imaging - current and emerging roles for multi-detector row computed tomography. (bjcardio.co.uk)
- One download Multi Detector Computed Tomography in Oncology: CT Perfusion Imaging 2007 Midori is a field was Hino Tsukasa, who was to the website she allows on for a mate. (iamkillernapkins.com)
- download Multi Detector Computed Almost to make our ID links of function. (iamkillernapkins.com)
- download Multi Detector Computed Tomography that your game may not be very on our cart. (iamkillernapkins.com)
- Nowadays, multi-detector computed tomography is used to diagnose coronary anomalies and this provides clear images of coronary anomaly in a safe and noninvasive way. (bvsalud.org)
- We report here on three cases of right coronary anomaly that coursed between the aorta and pulmonic trunk, and this was confirmed by multi-detector computed tomography . (bvsalud.org)
- Multi detector computed tomography fistulography (MDCTF) is an underutilized technique for defining perianal fistulas. (edu.pl)
Role of multidetector1
- The aims and objectives is to the main aim of the study was to evaluate the role of multidetector routine CECT-Th in the detection of anomalies of branching of the aortic arch along with an estimation of their incidences. (aijournals.com)
- The aim of this study was to determine prospectively whether the addition of a multidetector computed tomography scan (with various reconstructions) results in changes in the evaluation of intra- articular distal radial fractures and thus changes in the plans for further management. (ebscohost.com)
- Multidetector computed tomography dental scan analysis of root canal morphology of maxillary canine. (bvsalud.org)
- Nongated axial chest computed tomography (CT), traditionally used to evaluate aortic size, does not account for the obliquity, systolic expansion, and nonaxial motion of the aorta during the cardiac cycle. (nih.gov)
- The aim of this study was to investigate the measurements of the mandibular canal in different patterns of reabsorbed alveolar ridges, using multidetector computed tomography in order to evaluate the relationship of the mandibular canal with the cortex of the mandible remains. (bvsalud.org)
- We aimed to evaluate the abnormal pulmonary multidetector computed tomography findings of patients with AS and compare them with the clinical symptoms, duration of illness, laboratory results and pulmonary function tests (PFT). (edu.pl)
- Hence, we tried to evaluate the incidence of these anatomic variations in the branching of the aortic arch utilizing routine contrast-enhanced computed tomography of the thorax (CECT-Th) rather than aortograms. (aijournals.com)
- A posterior circulation - acute stroke prognosis early computed tomography score system can be used to evaluate the prognosis of the patient.We are reporting a case of top of the basilar syndrome in an 85-years-old female patient who presented to us with complaints of one episode of seizure. (who.int)
Sensitivity and Specifi1
- 14 A recent multidetector CTA (MDCTA) study reported an even higher sensitivity and specificity for the detection of ulcerations (94% and 99%, respectively). (ahajournals.org)
- INTRODUCTION: To predict the postoperative total renal function after renal surgery, we measured preserved renal cortex volume and examined the estimation of postoperative eGFR of from preoperative multidetector CT. (aacrjournals.org)
Cardiac computed tomography1
- The effect of heart rhythm on patient radiation dose with dual-source cardiac computed tomography. (biomedsearch.com)
- Lee ST, Kim SY, Hur G et al (2008) Coronary-to-bronchial artery fistula: demonstration by 64-multidetector computed tomography with retrospective electrocardiogram-gated reconstructions. (springer.com)
- The aim was to assess if computed tomography is able to measure pulmonary artery pulsatility in patients affected by chronic obstructive pulmonary disease and to ascertain whether pulsatility is different in patients with and without pulmonary hypertension and whether it is related to haemodynamics. (hindawi.com)
- Does aortic valve calcification (AVC) on computed tomography (CT) predict mortality risk in patients with aortic stenosis (AS)? (acc.org)
- The role of positron emission tomography with the glucose analogue [18F] fluoro-2-deoxy-D-glucose (FDG-PET) in the initial staging of disease in patients with primary colorectal cancer (CRC) has not been adequately assessed. (bmj.com)
- With multidetector helical CT, it is possible to decrease examination time, allowing patients to be scanned under sedation. (avmi.net)
- The objective of this single-center cross-sectional study was to assess the prevalence and computed tomography (CT) characteristics of incidental and nonincidental thyroid tumors in a large population of dogs, using prospective recruitment of patients undergoing CT examination for various reasons during the period of 2005-2015. (avmi.net)
- Accurate quantification of pulmonary artery diameter in patients with cyanotic congenital heart disease using multidetector-row computed tomography. (semanticscholar.org)
- Dual-source computed tomography for evaluating pulmonary artery in pediatric patients with cyanotic congenital heart disease: Comparison with transthoracic echocardiography. (semanticscholar.org)
- Pulmonary emphysematous changes in patients with congenital heart disease associated with increased pulmonary blood flow: evaluation using multidetector-row computed tomography. (semanticscholar.org)
- Patients who needed computed tomography to confirm fracture morphology were included. (biomedcentral.com)
- In this study, we used multidetector row computed tomography to successfully perform in vivo evaluation of the bone microstructure of the humeral greater tuberosity in patients with rotator cuff tears. (biomedcentral.com)
- Central cross-sectional slice of 30 edentulous alveolar ridges in the mandibular first molar region of otherwise healthy patients using multidetector computed tomography were analyzed. (bvsalud.org)
- Our secondary outcome measures are to assess the performance of 320-multidetector computed tomography in the detection of regional wall motion abnormalities in comparison to those obtained with 3Tesla cardiac magnetic resonance imaging. (clinicaltrials.gov)
- RATIONALE AND OBJECTIVES: The purposes of this study were to assess the accuracy of trainee radiologists' reports for computed tomographic pulmonary angiographic (CTPA) imaging and to determine agreement or discrepancy with final verified consultant reports. (biomedsearch.com)
- We aimed to reproduce the anthropometrical measurement of femoral dimensions using multi-planar reconstruction computed tomography (CT), assess the correlation between stature and femoral measurements obtained by this approach, and establish a regression equation for estimating stature in the modern Japanese population. (springer.com)
- Overall, the recommended treatment plan changed in 23% of the cases when the evaluation included multidetector computed tomography images in addition to conventional radiographs. (ebscohost.com)
- Interobserver and intraobserver agreements were significantly increased when radiographs and multidetector computed tomography images both were available for evaluation (K = 0.73 and 0.91, respectively) as compared with interobserver and intra- observer agreement with radiographs alone (K = 0.43 and 0.69, respectively). (ebscohost.com)
- Gurses MS, Inanir NT, Gokalp G, Fedakar R, Tobcu E, Ocakoglu G (2016) Evaluation of age estimation in forensic medicine by examination of medial clavicular ossification from thin-slice computed tomography images. (springer.com)
- Imaging modalities such as fistulography, anal endosonography, perineal sonography, magnetic resonance imaging (MRI), and computed tomography (CT) are available for its evaluation. (edu.pl)
- The purpose of this study was to determine the prognostic accuracy of electron beam computed tomographic (CT) scanning of the coronary arteries and the relationship of coronary calcification to standard coronary disease risk factors and C-reactive protein (CRP) in the prediction of atherosclerotic cardiovascular disease (ASCVD) events in apparently healthy middle-age persons. (scienceopen.com)
- The complex anatomy of the fistula was shown in detail by multidetector computed tomography using multiplanar reconstruction and 3D volume rendering techniques. (bmj.com)
- Three-dimensional reconstruction of New Zealand rabbit antebrachium by multidetector computed tomography', Iranian Journal of Veterinary Research , 16(2), pp. 205-209. (ac.ir)
- All radiology departments using a 16 or 64 multidetector CT will be sought for enrolment in the study. (knowcancer.com)
- Conclusions: Multidetector computed tomography provides more accurate information regarding the anatomy of intra- articular distal radial fractures than radiography provides. (ebscohost.com)
- We report on the clinical and imaging features, including radiography and computed tomography (CT), of a fat-density effusion in the wrist joint and tendon sheaths of the extensor pollicis longus, extensor carpi radialis. (ebscohost.com)
- A 49-year-old man was incidentally found to have a right-sided descending thoracic aorta and multidetector computed tomography was performed. (onlinejacc.org)
- Pulmonary lobar volumetry using novel volumetric computer-aided diagnosis and computed tomography. (semanticscholar.org)
- A chest computed tomographic angiogram revealed "thrombus-in-transit" across a patent foramen ovale, confirming the diagnosis of paradoxical embolism. (elsevier.com)
- Our case is a key demonstration of the even rarer instance where such a diagnosis is confirmed at multidetector computed tomography. (elsevier.com)
- We describe the multidetector computed tomographic diagnosis of small bowel obstruction resulting from a gallstone impacted in the distal ileum and of gastric outlet obstruction from a gallstone impacted in the pyloric antrum (Bouveret syndrome). (cu.edu.tr)
- Contrast enhancement of coronary atherosclerotic plaque: a high-resolution, multidetector-row computed tomography study of pressure-perfused, human. (nih.gov)
- The objective of this study was to investigate the effect of contrast injection on atherosclerotic coronary plaque attenuation measured using multidetector-row computed tomography. (nih.gov)
- The primary objective of the study is to obtain a snapshot of Italian CT practice in adults and children that is up-to-date in regards to information concerning multidetector 16- and 64- row CT. (knowcancer.com)
- range, 20-93 years), who underwent 64-slice multidetector row computed tomography of the chest from November 2005 to April 2006, were included in this study. (ovid.com)
- This is the first study to look at the implementation of computed tomography in the patient care pathway that is outcome focused. (biomedcentral.com)
- The purpose of this cross-sectional retrospective study was to describe the prevalence of lesions consistent with middle and external ear disease in dogs presented for multidetector computed tomography (CT) of the head and/or cranial cervical spine at our hospital during the period of July 2011 and August 2013. (avmi.net)
- Purpose This study aimed at evaluating the role played by multidetector computed tomography in decision making in the management of extra and intraarticular fractures of the calcaneus. (mendeley.com)
- Conclusion The study showed that multidetector computed tomography is the best method for assessing and classifying calcaneal fractures, as well as delineating the fracture fragments and helping in making the pre-operative planning. (mendeley.com)
- ECG-gated multidetector computed tomography is a valuable diagnostic method for adults with congenital heart disease. (polradiol.com)
- Multidetector-row computed tomography in suspected pulmonary embolism. (wikipedia.org)
- Schmitt R, Froehner S, Brunn J et al (2005) Congenital anomalies of the coronary arteries: imaging with contrast-enhanced, multidetector computed tomography. (springer.com)
- Acute-phase multidetector computed tomography has better temporal, spatial, and contrast resolution than a conventional scanner has. (ebscohost.com)
- Using a pressurized perfusion system, 10 human coronary arteries were examined postmortem with multidetector-row computed tomography and histology. (nih.gov)
- Pre-enhanced, peak-enhanced, and delayed enhanced multidetector-row computed tomography images were acquired during continuous perfusion of the vessel. (nih.gov)
- Oral Iopamidol in Multidetector Computed Tomography-Module 2 has been approved for 1 ARRT Category A CE credit by The Association for Medical Imaging Management, AHRA. (naccme.com)
- PURPOSE We sought to determine the volume of each anatomic lung lobe reconstructed using 3-dimensional computed tomography (3D-CT) imaging from multidetector CT images and to compare these with pulmonary function test results. (semanticscholar.org)
- Results: The average measurements for intra-articular step and gap were 0.4 mm and 0.9 mm, respectively, on post- reduction radiographs and 1.3 mm and 2.4 mm, respectively, on sagittal multidetector computed tomography images (p (ebscohost.com)
- To determine the effect of automatic vertical positioning (AVP) software on radiation dose reduction in multidetector row computed tomography of the chest. (ovid.com)
- Background: Computed tomography can be an adjunct to radiographs when evaluating intra-articular fractures of the distal part of the radius. (ebscohost.com)
- Central articular depression was found in twenty-one wrists (18% of the total) on radiographs, but on multidetector computed tomography it was found to be present in seventy-four wrists (62% of the total) (p (ebscohost.com)
- Radiographs and multidetector computed tomography were performed. (mendeley.com)
- The number of computed tomography (CT) examinations has increased continuously since 1980 for a variety of reasons, including new indications and growth in the number of CT units. (springer.com)