Accuracy of MRI wall shear stress estimation
نویسندگان
چکیده
منابع مشابه
Accuracy of MRI wall shear stress estimation
Methods Three methods for WSS estimation were studied. These methods are based on 1) linear extrapolation (LE) of MRI velocity data, 2) MRI velocity data in combination with estimation of location of vessel wall, and 3) Fourier velocity encoding (FVE). Numerical velocity fields representing axisymmetric 2D velocity profiles were generated for WSS values ranging from 1-20 N/m. Based on the numer...
متن کاملAssessment of the accuracy of MRI wall shear stress estimation using numerical simulations.
PURPOSE To investigate the accuracy of wall shear stress (WSS) estimation using MRI. Specifically, to investigate the impact of different parameters and if MRI WSS estimates are monotonically related to actual WSS. MATERIALS AND METHODS The accuracy of WSS estimation using methods based on phase-contrast (PC) MRI velocity mapping, Fourier velocity encoding (FVE) and intravoxel velocity standa...
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1 This paper combines two abstracts that were submitted for review to the 2004 Annual Meeting of the International Society for Magnetic Resonance In Medicine (Kyoto, Japan).
متن کاملQuantification and comparison of 4D Flow MRI derived wall shear stress and MRE derived wall shear stiffness of abdominal aorta
Background Aortic wall shear stiffness (AWS) and wall shear stress (WSS) are important indicators of pathological changes in the abdominal aorta. Previous studies have shown that AWS increases with diseases such as hypertension and atherosclerosis while WSS decreases with these diseases. Therefore, early detection of AWS and WSS could significantly impact timely treatment of these pathological ...
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The predilection of atherosclerotic lesions for specific sites in the arterial tree is believed to be related t o the wall shear stress, exerted by the blood flow. Measurement of the magnitude of the wall shear stress is difficult and is frequently determined by an extrapolation of the velocity field t o find the wall shear rate and an estimation of the viscosity of the fluid in the neighborhoo...
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ژورنال
عنوان ژورنال: Journal of Cardiovascular Magnetic Resonance
سال: 2012
ISSN: 1532-429X
DOI: 10.1186/1532-429x-14-s1-w6