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.
