Abstract #1817

Quadra-FSE: A Multi-Platform Pulse Sequence for Multispectral qMRI (PD, T1, T2)

Hernan Jara¹, Arnaud Guidon², Jorge A Soto¹, and Osamu Sakai¹

¹Radiology, Boston University, Boston, MA, United States, ²Global MR Applications and Workflow, GE Healthcare, Boston, MA, United States

Purpose: To describe the quadra fast spin-echo (quadra-FSE) pulse sequence, which is the concatenation of two dual-echo FSE acquisitions differing only in TR and to describe the matching qMRI algorithms for mapping T1, T2, and PD. Methods: quadra-FSE was tested at 3T with a multi-compartment agarose phantom and relaxometry was compared to gold standard relaxometry scans using qMRI algorithms developed in house. Results: PD, T1, and T2 maps generated with the quadra-FSE scans are accurate and of excellent image quality. Conclusion: Concatenation of two DE-FSE scans with different TRs can be used for combined and accurate PD, T1, and T2 mapping.

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