Abstract #2892

In vivo parametric mapping using piecewise constant flip angle and multi shot EPI MR Fingerprinting

Zaid Bin Mahbub¹, Mohammad Golbabaae², Arnold Julian Vinoj Benjamin^1,2, Mike Davies², and Ian Marshall¹

¹Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom, ²School of Engineering, Institute for Digital Communications, University of Edinburgh, Edinburgh, United Kingdom

Previous MR fingerprinting studies have used smooth variations in TR and flip angles. In this study we introduce a piecewise constant flip angle train into a standard gradient echo multi shot EPI sequence. The resulting T1, T2 and proton density maps were obtained from a phantom and healthy volunteers using only 3 distinct flip angle values (obtained by optimization over 8 different flip angles) and using iterative reconstruction. The method generates steady states covering full k-space, producing alias-free maps.

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