Meeting Banner
Abstract #0290

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

MAGNA25Subashini 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.

Abstract PDF Presentation Video

Keywords

abdominal achieve achieving acquisition acquisitions additional adjust amount amplitude applied arrows artifacts balanced banding biomedical block blocks blurring called capable comparable concentrations consists controlling corporate corporation dashed decay deposited deposition diagram driven duration edge edges effective employs energy engineering equilibrium especially exhibits extra fast fields fraction gated good gradient green half haste incorporates induce inhomogeneities inhomogeneity initial insensitive interdepartmental kaiser legend magnetization maintain maintains medical module normalized note outer partial phantom phantoms prep preparation prepared preserves program promising pulse pulses pure ramp ramped read reduce reduced reduces reduction related resolution resolutions respiratory sampled scanner scheme sensitive sensitivity sharper shot simulation simulations slice solid space spatial spin stabilization steady steps strong thereby tide tissues towards transient transition transverse traversing triggered trio turbo ultra variable visible volunteer volunteers white yellow