Correction of Phase Offset Induced From Eddy Current in MR Phase Contrast Cine Flow Measurement of Cerebrospinal Fluid in the Cervical Spine
Kwan-Jin Jung1, Andrea Willhite2, and Susan Harkema2
1Radiology, University of Louisville, Louisville, KY, United States, 2Neurosurgery, University of Louisville, Louisville, KY, United States
The
phase offset in the phase contrast MR flow imaging was corrected using an
image-based method in order to account for the spatially inhomogeneous and
subject-dependent phase offset. The phase shift on the flow region was
estimated iteratively from the phase shift of the stationary tissue using the
low spatial distribution of the phase offset. This phase offset correction
method with an automated segmentation and iterative estimation of the phase
offset allowed us to study the cerebrospinal fluid flow in the spinal
subarachnoid space of ten healthy and ten spinal cord injury participants
reliably without elaborate manual effort.
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