Abstract #2688
Estimation of Coil Sensitivities in Myocardial First-Pass Perfusion Imaging Using a Model-Based T1 Mapping Technique
Johannes Tran-Gia 1 , David Lohr 1 , Andreas M. Weng 1 , Christian O. Ritter 1,2 , Thorsten A. Bley 1 , and Herbert Kstler 1
1
Department of Diagnostic and Interventional
Radiology, University of Wrzburg, Wrzburg, Germany,
2
Department
of Diagnostic and Interventional Radiology, University
Medical Center Gttingen, Gttingen, Germany
A method for correcting signal variations due to coil
sensitivity variations in quantitative myocardial
first-pass perfusion imaging is presented. Using a
model-based reconstruction technique, T1 mapping is
possible even for the extremely short acquisition times
of about 200ms in myocardial perfusion imaging. This
requires T1 to be sufficiently short, which is the case
during the first pass of the contrast agent bolus
through the right and left ventricle. By quantifying T1
in these areas, the coil sensitivity can be estimated
locally, and signal changes due to coil sensitivity
variations in the myocardium can effectively be reduced
in a perfusion image series without additional scans.
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