Title |
A multi-center inter-manufacturer study of the temporal stability of phase-contrast velocity mapping background offset errors
|
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Published in |
Critical Reviews in Diagnostic Imaging, October 2012
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DOI | 10.1186/1532-429x-14-72 |
Pubmed ID | |
Authors |
Peter D Gatehouse, Marijn P Rolf, Karin Markenroth Bloch, Martin J Graves, Philip J Kilner, David N Firmin, Mark BM Hofman |
Abstract |
Phase-contrast velocity images often contain a background or baseline offset error, which adds an unknown offset to the measured velocities. For accurate flow measurements, this offset must be shown negligible or corrected. Some correction techniques depend on replicating the clinical flow acquisition using a uniform stationary phantom, in order to measure the baseline offset at the region of interest and subtract it from the clinical study. Such techniques assume that the background offset is stable over the time of a patient scan, or even longer if the phantom scans are acquired later, or derived from pre-stored background correction images. There is no published evidence regarding temporal stability of the background offset. |
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