Background Phase Correction for Quantitative Phase-Contrast MRI
Rizwan Ahmad1, Ning Jin2, and Orlando P Simonetti3
1Electrical and Computer Engineering, The Ohio State University, Columbus, OH, United States, 2Siemens Healthcare, Columbus, OH, United States, 3Radiology and Internal Medicine, The Ohio State University, Columbus, OH, United States
Virtually every phase-contrast MRI (PC-MRI) measurement
is contaminated with background phase (BP) from eddy currents and concomitant
gradient terms. A widely reported method to correct BP relies on
a polynomial fitting of the static pixels within regions of static tissue. This
method requires sufficient static tissue in close proximity to the region of
interest—a requirement that cannot be met for imaging of the heart or great
vessels. In this work, we propose a BP correction method
that leverages information from multiple slices collected under identical
conditions but with different table positions.
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