A method to estimate wall shear rate with a clinical ultrasound scanner
| Autor: | S. Meagher, Katharine Fraser, James R. Blake, William J. Easson, Peter R. Hoskins |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
medicine.medical_specialty
Scanner Materials science Acoustics and Ultrasonics Brachial Artery Biophysics Wall shear Sensitivity and Specificity medicine.artery medicine Humans Radiology Nuclear Medicine and imaging Ultrasonography Doppler Color Aorta Radiological and Ultrasound Technology Phantoms Imaging Models Cardiovascular Ultrasonography Doppler Arteries Elasticity Fully developed Femoral Artery Clinical ultrasound medicine.anatomical_structure Carotid Arteries Pulsatile Flow cardiovascular system Color flow Radiology Shear Strength Oscillatory flow Biomedical engineering Artery |
| Zdroj: | Ultrasound in medicinebiology. 34(5) |
| ISSN: | 0301-5629 |
| Popis: | A simple technique to estimate the wall shear rate in healthy arteries using a clinical ultrasound scanner has been developed. This method uses the theory of fully developed oscillatory flow together with a spectral Doppler trace and an estimate of mean arterial diameter. A method using color flow imaging was compared with the spectral Doppler method in vascular phantoms and found to have errors that were on average 35% greater. Differences from the theoretic value for the time averaged wall shear rate using the spectral Doppler method varied by artery: brachial -9 (1) %; carotid -7 (1) %; femoral -22 (4) %; and fetal aorta -17 (10) %. Test measurements obtained from one healthy volunteer demonstrated the feasibility of the technique in vivo. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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