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Updated: Aug 19, 2026

Phase Contrast Magnetic Resonance Imaging in the Rat Common Carotid Artery
Published on: September 5, 2018
Effects of intravoxel velocity distributions on the complex difference method of phase-contrast MR angiography
1Department of Radiology, The Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, NC 27157-1022, USA.
Abstract:
The complex difference method of phase-contrast MR angiography is affected not only by the degree of velocity encoding applied during the scan but also by the variance of the intravoxel velocity distribution. The reconstructed intensities of voxels with the same average flow rate but different variances of the velocity distribution can differ significantly. Mathematical analysis and scanner phantom experiments confirm this conclusion.
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