Abstract #0939

Multiparametric T2* MR Fingerprinting

Cory Robert Wyatt^1,2, Travis Smith³, Manoj K Sammi², William Rooney², and Alexander Guimaraes¹

¹Radiology, Oregon Health and Science University, Portland, OR, United States, ²Advanced Imaging Research Center, Oregon Health and Science University, Portland, OR, United States, ³Casey Eye Institute, Oregon Health and Science University, Portland, OR, United States

Previous magnetic resonance fingerprinting studies have focused on T1 and T2 relaxation times, relying solely on flip angle and repetition time changes, leaving the TE as short as possible for optimal SNR and phase. In this study, T1 and T2 MR fingerprinting is extended to include T2* relaxation by varying echo times across acquisitions. The resulting T1, T2, T2*, and B0 maps are then compared to maps obtained with conventional sequences, showing good spatial and quantitative agreement. A novel phase dictionary is used to before the full T1/T2/T2* dictionary to produce B0 maps with fine resolution and reduce computational time.

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