Abstract #0290

Fast, Low SAR & Off-Resonance Insensitive T2 Weighted Variable Amplitude PSIF (T2 VAPSIF) Imaging

Subashini Srinivasan¹,², Wesley D. Gilson¹, Aaron Flammang¹, Dominik Paul³, Sunil Patil¹

¹Center for Applied Medical Imaging, Siemens Corporation, Corporate Research, Baltimore, MD, United States; ²Biomedical Engineering Interdepartmental Program, University of California, Los Angeles, CA, United States; ³Siemens AG, Erlangen, Germany

T2TIDE is a balanced SSFP based T2w single shot sequence which provides faster image acquisition, sharper edge resolution and lower SAR compared to HASTE. However, T2TIDE is sensitive to B0 inhomogeneities producing banding artifacts especially at higher field strengths. We present a sequence based on T2TIDE called T2w Variable Amplitude PSIF (T2VAPSIF) wherein a Kaiser-Bessel derived stabilization module and a PSIF acquisition are used. Phantom and volunteer images show that the T2VAPSIF has T2w similar to TSE and HASTE, is insensitive to B0 inhomogeneities and preserves the low SAR, sharper edge resolution and faster acquisition properties of T2TIDE.