Related Experiment Video
Updated: Jun 21, 2026
09:40
Ultrasound Assessment of Flow-Mediated Dilation of the Brachial and Superficial Femoral Arteries in Rats
Published on: November 3, 2016
Reliability of ultrasonography in detecting flow mediated dilation
Selcuk Pala1, Gokhan Kahveci, Mustafa Akcakoyun
1Department of Cardiology, Kartal Kosuyolu Heart and Research Hospital, Istanbul, Turkey. selcukpalamd@yahoo.com
The International Journal of Cardiovascular Imaging
|July 18, 2009
Summary
Ultrasonography reliably detects brachial artery flow-mediated dilation (FMD), showing high correlation and reasonable agreement with angiography. This study validates ultrasound as a precise tool for FMD assessment.
Area of Science:
- Cardiovascular Imaging
- Vascular Ultrasound
- Diagnostic Accuracy
Background:
- Brachial artery flow-mediated dilation (FMD) is crucial for assessing endothelial function.
- Previous studies reported reproducibility but lacked direct comparison with a reference imaging technique.
Purpose of the Study:
- To evaluate the precision and accuracy of ultrasonography for detecting brachial artery FMD.
- To compare ultrasonographic FMD (USFMD) measurements against simultaneous angiographic FMD (AGFMD).
Main Methods:
- 40 patients undergoing coronary angiography had simultaneous USFMD and selective brachial angiography.
- Measurements were taken at baseline and during reactive hyperemia.
- Linear regression and Bland-Altman analysis assessed precision and accuracy.
Main Results:
- High correlation (r=0.93, P<0.0001) was observed between USFMD and AGFMD.
- The standard error of estimate was 2.7%, with reasonable agreement (95% limits of agreement: -5.481 to 4.674%).
- Mean USFMD was 14.1±7.3% and mean AGFMD was 14.7±7.8%.
Conclusions:
- Ultrasonography demonstrates reliability and accuracy in detecting brachial artery FMD.
- USFMD is a precise method comparable to angiography for FMD assessment.
More Related Videos
Related Concept Videos
01:19Urodynamic Studies: Uroflowmetry
Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
01:17Ultrasonography
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
During an ultrasonography procedure, a handheld device called a...
01:19Assessing Blood pressure using a doppler ultrasound
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment: