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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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