Velocity quantification in magnetic resonance imaging.
A variety of methods has been developed for quantitating flow in vivo. These are usually based on the principles of velocity-phase or TOF information. The former allows a point-by-point 2D image of velocity, but also has other manifestations involving real-time 1D projections or 1D projections with 1D velocity information (flow zeugmatography). The TOF methods use the in-flow of unsaturated spins into a saturated region (for example) to estimate flow. The concepts, features, and clinical applications of these and other techniques are reviewed in this article.
Haacke
E M
EM
Department of Radiology, University Hospitals of Cleveland, OH 44106.
Smith
A S
AS
Lin
W
W
Lewin
J S
JS
Finelli
D A
DA
Duerk
J L
JL
D001783:Blood Flow Velocity; D001921:Brain / Q000502:physiology*; D002533:Cerebral Angiography; D005583:Fourier Analysis; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*