Abstract #2175
Optimized refocusing flip angles for efficient single-shot fast spin echo imaging
Manojkumar Saranathan 1 , Andreas M Loening 1 , Daniel V Litwiller 2 , Pauline W Worters 3 , and Shreyas Vasanawala 1
1
Department of Radiology, Stanford
University, Stanford, CA, United States,
2
Global
MR Applications and Workflow, GE Healthcare, Rochester,
MN, United States,
3
Global
MR Applications and Workflow, GE Healthcare, Menlo Park,
CA, United States
Single shot T2-weighted imaging methods like SSFSE and
HASTE are robust to patient motion but suffer from
specific absorption rate (SAR) limitations, reducing
their efficiency at 3T due to lengthened TRs. We
investigated the use of a variable refocusing flip angle
scheme for SSFSE, which enabled significant reduction in
TR while preserving image quality. This new sequence
called vrfSSFSE was optimized to reduce SAR and maximize
SNR for imaging the biliary/pancreatic ducts and the
female pelvis and compared to conventional SSFSE
imaging.
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