Does separating the resistive index into pre- and post-glomerular resistance and vascular compliance improve the diagnostic accuracy of renal transplant doppler ultrasound? (wikipedia.org)
Some abortion providers have contended that the human embryo at six weeks gestation has no heart, no blood circulating and no accompanying heartbeat, and that what is detected by ultrasound at that age is electrical activity from cells that will become the heart. (cmda.org)
A Doppler ultrasound is a type of ultrasound imaging test that uses sound waves to show how well your blood flows through your blood vessels. (medlineplus.gov)
A Doppler ultrasound can examine your arteries (blood vessels that carry oxygen-rich blood from your heart and lungs to your body) and veins (blood vessels that carry blood from your body back to your heart and lungs to get more oxygen). (medlineplus.gov)
Doppler ultrasound works by bouncing sound waves off red blood cells flowing through your blood vessels. (medlineplus.gov)
Doppler ultrasound can check for blood vessel conditions that affect the amount, speed, and direction of blood flow in different parts of your body. (medlineplus.gov)
There are different types of Doppler ultrasound tests that can be used to gather different information. (medlineplus.gov)
A Doppler ultrasound is part of an echocardiogram, which is a test that shows the size and shape of your heart and how well it's pumping blood. (medlineplus.gov)
A Doppler ultrasound can also help diagnose blood vessel tumors and problems with the structure of your blood vessels that you were born with. (medlineplus.gov)
During pregnancy, Doppler ultrasound is used if there are concerns about blood flow between a pregnant person and the unborn baby. (medlineplus.gov)
You may need a Doppler ultrasound if you have symptoms of abnormal blood flow. (medlineplus.gov)
An ultrasound of your brain, called a transcranial Doppler ultrasound, can diagnose the cause of a stroke and/or help estimate your risk for having a stroke in the future. (medlineplus.gov)
In this study the possibility of using Doppler ultrasound in pig fetuses is examined. (uu.nl)
Use of ultrasound is safe in humans, and has been widely used in medical applications. (j-nn.org)
This study aimed to evaluate the role of Doppler ultrasound (US) and elastography to identify residual breast cancer for patients showing near complete response following chemotherapy on magnetic resonance imaging (MRI). (e-ultrasonography.org)
For this study, 20 healthy right-handed volunteers underwent functional laterality assessment using functional transcranial Doppler ultrasound (fTCD). (ox.ac.uk)
Fetal echocardiography, Doppler ultrasound, and biometry were used to evaluate 2,661 singleton fetuses (1,381 male fetuses and 1,280 female fetuses) between 1 August 2006 and 31 May 2010. (biomedcentral.com)
The efficacy of each fetal biometry, Doppler ultrasound, and nasal bone length (NBL) measurement was evaluated in all of the fetuses. (biomedcentral.com)
The area under the curve of the SROC was calculated to estimate the performance of color Doppler ultrasound to distinguish malignant thyroid nodules. (typeset.io)
According to SROC, AUC = 0.78 (95% CI 0.74-0.81) is between 0.75 and 0.92, so that color Doppler ultrasound has a good accuracy. (typeset.io)
We used functional transcranial Doppler ultrasound (fTCD) to assess cerebral blood flow during language production in 57 four-year-olds, including 15 children who had been late-talkers when first seen at 20 months of age. (peerj.com)
WRAP-generalized-models-quantifying-laterality-using-functional-transcranial-Doppler-ultrasound-Thompson-2022.pdf - Published Version - Requires a PDF viewer. (warwick.ac.uk)
We consider how analysis of brain lateralization using functional transcranial Doppler ultrasound (fTCD) data can be brought in line with modern statistical methods typically used in functional magnetic resonance imaging (fMRI). (warwick.ac.uk)
Assessments of flow by transcranial Doppler ultrasound in the middle cerebral artery during exercise in humans. (ox.ac.uk)
This study examined the consistency between three indexes of cerebral blood flow (CBF) obtained by using transcranial Doppler ultrasound in eight human volunteers. (ox.ac.uk)
Our results suggest that the increase in CBF with exercise that has been reported with transcranial Doppler ultrasound needs to be treated with caution, as much of the response could arise as an artifact from the increase in amplitude and frequency of the arterial pressure waveform. (ox.ac.uk)
PRIMARY AND SECONDARY OUTCOME MEASURES: Serial Doppler ultrasound examinations of the umbilical and middle cerebral arteries between 20 and 42 weeks gestation, Pregnancy Distress Questionnaire (PDQ) scores between 23 and 40 weeks gestation and neonatal outcomes. (ox.ac.uk)
This narrative review describes the main applications of de la ultrasonografía en ultrasound in anesthesia, ultrasound-guided techniques, and current trends in the perioperative anesthetic management of anestesia the surgical patient. (bvsalud.org)
The advantages of ultrasound include (typically two to 15 MHz, but modern waves real-time visualization of the target structure, probes up to 22 MHz) being above the the distribution of the drug along and about frequency of waves that the human ear can the tissue, and the ability to control its distri- hear (20 to 20 000 Hz)7. (bvsalud.org)
Thoracoscopic and laparoscopic surgery instruments, the newest version of color doppler ultrasonography and 16 slice computed tomography machine are few examples of our equipment. (gr.jp)
Sonography5
Transcranial Doppler sonography is used for evaluation of cerebral blood flow changes. (hindawi.com)
Different techniques developed but the original transcranial Doppler sonography (TCD) still has several advantages. (hindawi.com)
The purpose of this study was to evaluate the efficacy of prenatal ultrasonography and Doppler sonography in detecting isolated ventricular septal defects (VSDs) in a late-second-trimester population. (biomedcentral.com)
A study from a hospital from Indian west coast shows that vascular flow pattern of extensive peripheral and central flow or a central flow only and a resistive index of >0.75 on power Doppler sonography shows a healthy sensitivity and excellent specificity for pre dicting malignancy. (typeset.io)
Cerebral5
Changes in cerebral arterial pulsatility and hippocampal volume: A transcranial doppler ultrasonography study. (mpg.de)
It is often caused by placental-insufficiency and can be diagnosed with Doppler velocimetry measurements in the umbilical and middle cerebral arteries. (uu.nl)
Before, during and 60 min after the infusion, we investigated regional cerebral blood flow (rCBF), cerebral blood volume (CBV), both estimated with SPECT, and blood flow velocity (BFV) in the middle cerebral artery (MCA), measured with transcranial Doppler. (ku.dk)
Previously, using transcranial Doppler ultrasonography, we investigated whether the hemodynamic response to spontaneous variations in cerebral perfusion pressure (CPP) provides reliable information about cerebral autoregulatory reserve. (ox.ac.uk)
BP (Finapres), cerebral blood flow velocity (CBFV, transcranial Doppler), end-tidal CO2 (EtCO2, capnography) and heart rate (ECG) were recorded continuously during 5 min in each condition. (ox.ac.uk)
Mapping of the local arterial resistivity index from laser Doppler imaging enables unambiguous identification of retinal arteries and veins on the basis of their systole-diastole variations, and reveal ocular hemodynamics in human eyes. (wikipedia.org)
Conducting Doppler assessments of fetal arterial blood flow might increase the rate of identification of fetuses at risk of CHD. (biomedcentral.com)
In this study, we investigated fetal variations in VSDs using fetal arterial Doppler assessments to establish the risk of fetal VSDs in the general population. (biomedcentral.com)
Waveforms of intracranial pressure (ICP), arterial pressure and transcranial Doppler flow velocity (FV) were captured daily over 0.5-2.0 hour periods. (ox.ac.uk)
Pregnancy4
Abstract Objective: Intrauterine growth restriction (IUGR) is a common complication in human pregnancy. (uu.nl)
Early diagnosis of sex, cleft palate, cleft lip, absent finger, disease-oriented from the brain and spinal cord can be performed with 4d ultrasonography device in the early stage of pregnancy. (ahuhastanesi.com)
First trimester maternal serum free beta human chorionic gonadotrophin and pregnancy associated plasma protein A as predictors of pregnancy complications. (seedmedicalpublishers.com)
Values were obtained every 10 ms for the velocity associated with the maximal frequency of the Doppler shift (VP), the intensity-weighted mean velocity (VIWM), and total signal power (P). Beat-by-beat averages for three indexes (P, IWM, provided significantly different results for the percent changes in CBF with exercise. (ox.ac.uk)
Diagnostic4
Doppler (a diagnostic test that measures the speed of blood flow). (europa.eu)
Color Doppler ultrasonography diagnostic value in detection of malignant nodules in cysts with pathologically proven thyroid malignancy: a systematic review and meta-analysis. (typeset.io)
Color Doppler is a valuable non-invasive method for evaluating thyroid nodules, and it is a high-sensitivity diagnostic tool for assessing thyroid nodulesensitivity and specificity and should be included in the standard clinical protocol. (typeset.io)
Color Doppler is a valuable non-invasive method for evaluating thyroid nodules, and it is a high-sensitivity diagnostic tool for assessing thyroid nodules. (typeset.io)
Factors1
The research problem is summarized in the following questions:- - Do climatic factors affect human health and comfort? (pdfplayer.org)
Examination3
Bland-Altman plot depicting agreement between B-mode and PWD ultrasonography in the number of peristaltic contractions observed in the duodenum during a 30-second period in nonsedated rabbits (10 healthy client-owned rabbits brought for routine physical examination and 11 brought for routine ovariohysterectomy or castration) and sedated rabbits (only the 11 rabbits brought for routine ovariohysterectomy or castration). (avma.org)
Color Doppler examination images showing the blood flow only outside the retroocular nodule in which the movement of a Dirofilaria repens worm is detected in a 20-year-old woman, Rostov-na-Donu, Russia. (cdc.gov)
Several study methods were used, including the morphological approach to clarify the natural features of the study area such as the site, as well as the use of the deductive approach to try to explain the relationship between climatic variables on which the research hypotheses were built such as heat, humidity, wind speed and the relationship between them and their impact on human health. (pdfplayer.org)
Thus, non-invasive methods, such as optic nerve sheath diameter, transcranial doppler ultrasonography, and MRI/CT, are considered to be promising techniques to overcome these problems. (grandviewresearch.com)
Echocardiography1
Previous studies have proposed fetal Doppler echocardiography screening as an additional screening tool for VSDs [ 13 - 15 ]. (biomedcentral.com)
Gestation1
Human gestation takes about 38 weeks. (drlogy.com)
Blood10
Waveform analysis of human retinal and choroidal blood flow with laser Doppler holography. (wikipedia.org)
Here, we show by doppler ultrasonography decreased splenic blood flow in Smn2B/- mice. (nih.gov)
Passive oxygen diffusion at that age is insufficient to support metabolism and life, so the fetal heart beats and circulates blood to provide oxygen and nutrients to the developing human. (cmda.org)
For use in Doppler scans, a further 3 main studies involved 361 patients who were being tested for abnormalities in large blood vessels, and 217 patients being tested for abnormalities in smaller vessels. (europa.eu)
It can show much smaller blood vessels and slower blood flow than standard color Doppler. (medlineplus.gov)
A "pulsed wave" Doppler can show where blood is flowing at different speeds, but it can't record blood flowing at high speeds. (medlineplus.gov)
A "continuous wave" Doppler can record very fast blood flow, but it can't show the exact location in the blood vessel. (medlineplus.gov)
Unmyelinated fibres, mainly originating from the dorsalis nervi vagi nerve, regulate blood flow and activity of the abdominal organs, while myelinated fibres, originating from the ambiguus nerve, regulate the thoracic organs of the heart and lungs as well as speech (superior laryngeal and recurrent nerve) and the hearing of human speech (including the stapedius nerve after connection with the facial nerve). (osteopathie-liem.de)
The assessment of thyroid blood flow by color-flow Doppler ultrasonography is valuable in the differentiation of destructive thyrotoxicosis from Graves disease, according to a study by Kumar et al. (medscape.com)
Stroke1
Postoperative thrombotic stroke may be reduced in incidence by the use of transcranial Doppler-directed Dextran-40 therapy. (ox.ac.uk)
Arteries1
With color flow Doppler the arteries were located in two fetuses per sow. (uu.nl)
Underwent1
On the day of surgery, women underwent Doppler US and elastography for tumor bed prior to US-guided core needle biopsy. (e-ultrasonography.org)
The human brain begins to form early in development. (cmda.org)
Imaging techniques are available to elucidate the pathogenesis of this complication, also allowing us to diagnose other brain lesions: CT, MRI and transcranial Doppler. (ox.ac.uk)
It is often assumed that a lateralized brain evolved because it conferred some advantage on the individual, perhaps by enabling division of labour between the hemispheres ( Vallortigara, 2006 ), yet in humans, lateralization is not universal. (peerj.com)
1993) Evidence for increasing incidence of abnormalities of the human testis: a review. (medscape.com)
Frequency2
Ultrasonography does not measure electrical activity, as it detects changes in frequency of pulses of high-frequency sound reflected off solid objects. (cmda.org)
USG Ultrasonography is a diagnosis method which monitors visceral organs of patients using such high-frequency soundwaves cannot be heard by a human. (ahuhastanesi.com)
Evaluate1
Today, the color Doppler ultrasonography is used to further evaluate suspected malignant tumors. (typeset.io)
Negative predictive value (NPV) and false negative rate (FNR) of biopsy and the combined Doppler US and elastography were analyzed, respectively. (e-ultrasonography.org)
Fetal2
However, no Doppler flow velocimetry measurements could be done due to constant fetal movement. (uu.nl)
A standard fetal echocardiographic evaluation, including two-dimensional gray-scale imaging and color and Doppler color flow mapping, was performed on all fetuses. (biomedcentral.com)
Detection1
Detection of tumor-associated neoangiogenesis by Doppler ultrasonography during early-stage ovarian cancer in laying hens: a preclinical model of human spontaneous ovarian cancer. (uchicago.edu)
Study8
Discussion: During the study it became clear that measuring Doppler velocimetry in pig fetuses is quite a challenge. (uu.nl)
a functional transcranial Doppler study. (ox.ac.uk)
Lateralised visual attention is unrelated to language lateralisation, and not influenced by task difficulty - a functional transcranial Doppler study. (ox.ac.uk)
The study of this research was to show the relationship between heat, humidity and wind speed through the use of the guide ways, basel and the village of Thom and its impact on human health and comfort to the city of Najaf and ways to address this problem. (pdfplayer.org)
Climate elements affect the human health and comfort in the study area. (pdfplayer.org)
The analytical and statistical method for analyzing geographical data to verify the validity of the study hypotheses and to show the relationship between the research variables and their treatment using the spss program statistically through the use of the ways and Basel guide to apply them to human comfort. (pdfplayer.org)
The research is determined by studying the climatic variables that affect human health for the study area for the period from (1990 - 2020). (pdfplayer.org)
LEAG: study conception, de datos PubMed y Cochrane, se incluyeron artículos originales, estudios aleatorizados y de revisión, en español y en inglés, manuscript design, publicados entre 2017-2021. (bvsalud.org)
Fetuses1
To determine if the pig fetus is an accurate animal model which we can use to diagnose and treat intrauterine growth restriction in human fetuses, more research has to be done. (uu.nl)
Cardiovascular1
Absence of smaller spleens in human patients is likely due to differences in presentation of defects in SMA between pre-clinical mouse models and human patients, particularly the susceptibility to cardiovascular issues. (nih.gov)
Evaluation3
Single image from a video recording of the duplex Doppler ultrasonographic evaluation of the jejunum in a nonsedated healthy rabbit. (avma.org)
Due to its precision, cost-efficiency, easy access, and non-invasive nature, color Doppler should be included in the standard clinical protocol for the decision-making period and the treatment evaluation. (typeset.io)
Miyazaki T, Tanaka M, Miyakoshi K, Minegishi K, Kasai K, Yoshimura Y. Power and colour Doppler ultrasonography for the evaluation of the vasculature of the human corpus luteum. (ijrcog.org)