Limits to flow detection in phase contrast MRI.
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ABSTRACT:
SUBMITTER: Williamson NH
PROVIDER: S-EPMC7745993 | biostudies-literature | 2020 Jun
REPOSITORIES: biostudies-literature
Publications
Limits to flow detection in phase contrast MRI.
Williamson Nathan H NH Komlosh Michal E ME Benjamini Dan D Basser Peter J PJ
Journal of magnetic resonance open 20200601
Pulsed gradient spin echo (PGSE) complex signal behavior becomes dominated by attenuation rather than oscillation when displacements due to flow are similar or less than diffusive displacements. In this "slow-flow" regime, the optimal displacement encoding parameter <i>q</i> for phase contrast velocimetry depends on the diffusive length scale q s l o w = 1 / l D = 1 / 2 D Δ rather than the velocity encoding parameter <i>v</i> <sub><i>enc</i></sub> = <i>π</i>/(<i>q</i>Δ). The minimum detecta ...[more]
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