A simple measure of flow disorder and wall shear stress in phase contrast MRI.
A method for estimating the standard deviation of velocity within a voxel is proposed. This estimate is based on data collected using a phase-contrast MRI technique. Simulations are presented to characterize the estimate and in vivo data are shown. Several different uses of the estimate are proposed, including obtaining a measure of wall shear stress, aiding in data combination from different phase-contrast MRI datasets, and mitigation of flow void artifacts.
Pipe
James G
JG
MRI Department, Barrow Neurological Institute, Phoenix, Arizona 85013, USA.
D016477:Artifacts; D001783:Blood Flow Velocity / Q000502:physiology; D001808:Blood Vessels / Q000503:physiopathology*; D003198:Computer Simulation; D003287:Contrast Media; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D012815:Signal Processing, Computer-Assisted
D003287:Contrast Media