Abstract #3148

Systolic Myocardial T1- and ECV-Mapping using Saturation-Recovery at 3 Tesla

Nadja M Meßner^1,2, Sebastian Weingärtner^1,3,4, Johannes Budjan⁵, Dirk Loßnitzer⁶, Theano Papavassiliu^2,6, Lothar R Schad¹, and Frank G Zöllner¹

¹Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany, ²DZHK (German Centre for Cardiovascular Research) partner site Mannheim, Mannheim, Germany, ³Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, United States, ⁴Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, ⁵Institute of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany, ⁶1st Department of Medicine Cardiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

Partial volume artifacts in myocardial T₁-mapping are a major source of quantification inaccuracy. In this study, saturation-recovery T₁-mapping at 3T was adapted to allow for systolic imaging in order to take advantage of the increased myocardial wall thickness. Estimated T₁- and ECV- values for SR T₁-mapping during systole were 1554±3ms/0.29±0.03 compared to 1581±35ms/0.31±0.04 at diastole. In conclusion, our results show that SR T₁-mapping in systole might be an alternative to derive T₁- and ECV-values with reduced effects of partial volume.

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