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Abstract #2178

Abdominal MR Fingerprinting with In-bore Breathing Guidance

Yoo Jin Lee1, Peter Koken1, Kristina Sonnabend2,3,4, Grischa Bratke3,4, Annerieke Heuvelink-Marck5, and Mariya Doneva1
1Philips Research, Hamburg, Germany, 2Philips GmbH Market DACH, Hamburg, Germany, 3Faculty of Medicine, University of Cologne, Cologne, Germany, 4Institute for Diagnostic and Interventional Radiology, University Hospital Cologne, Cologne, Germany, 5Philips Research, Eindhoven, Netherlands

Synopsis

Keywords: MR Fingerprinting/Synthetic MR, Body, Respiratory motionMR fingerprinting (MRF) in the abdomen is challenging due to respiratory motion. In this study, as an alternative to a series of extended breath-holds which could be challenging especially for patients, visual and auditive in-bore breathing guidance was used during the MRF scans for better patient comfort. MRF sequences were designed based on predefined breathing patterns such that data are acquired only during exhale holds. The corresponding MRF dictionaries were calculated beforehand to enable real-time matching of quantitative maps. We demonstrate that MRF scans with guided breathing provide comparable abdominal T1 and T2 maps as those with breath-holds.

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