Velocity Measurement in Carotid Artery: Quantitative Comparison of Time-Resolved 3D Phase-Contrast MRI and Image-based Computational Fluid Dynamics

Iranian Journal of Radiology : a Quarterly Journal Published by the Iranian Radiological Society
Ali Sarrami-ForoushaniAlejandro F Frangi

Abstract

Understanding hemodynamic environment in vessels is important for realizing the mechanisms leading to vascular pathologies. Three-dimensional velocity vector field in carotid bifurcation is visualized using TR 3D phase-contrast magnetic resonance imaging (TR 3D PC MRI) and computational fluid dynamics (CFD). This study aimed to present a qualitative and quantitative comparison of the velocity vector field obtained by each technique. MR imaging was performed on a 30-year old male normal subject. TR 3D PC MRI was performed on a 3 T scanner to measure velocity in carotid bifurcation. 3D anatomical model for CFD was created using images obtained from time-of-flight MR angiography. Velocity vector field in carotid bifurcation was predicted using CFD and PC MRI techniques. A statistical analysis was performed to assess the agreement between the two methods. Although the main flow patterns were the same for the both techniques, CFD showed a greater resolution in mapping the secondary and circulating flows. Overall root mean square (RMS) errors for all the corresponding data points in PC MRI and CFD were 14.27% in peak systole and 12.91% in end diastole relative to maximum velocity measured at each cardiac phase. Bland-Altman plots sho...Continue Reading

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Citations

Jan 31, 2017·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Atsushi FukuyamaTakafumi Kosugi
May 13, 2017·Ultrasound in Medicine & Biology·Kristoffer Lindskov HansenMichael Bachmann Nielsen
Oct 26, 2018·Cardiovascular Engineering and Technology·Alessandro BoccadifuocoMaria Vittoria Salvetti

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Software Mentioned

ANSYS CFX
Ansys ICEM CFD
MATLAB

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