Meeting Banner
Abstract #4281

Hiding Your Fat: Comparison of Fat Saturation Techniques for Single-Shot Fast Spin Echo Sequences for 7T Body Imaging

Sren Johst1, 2, Stephan Orzada1, 2, Anja Fischer1, 2, Lale Umutlu1, 2, Mark E. Ladd1, 2, Stefan Maderwald1

1Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany; 2Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

Several different fat saturation (FS) techniques for single-shot fast spin echo (SSFSE) were compared at 7 Tesla, whereby the recently proposed Time Interleaved Acquisition of Modes (TIAMO) was used for the imaging portion of the sequence: A novel method using TIAMO (multiple fat-selective 90 RF pulses applied with alternating transmit RF modes), slice-selective gradient reversal (SSGR), and slice-selective smaller bandwidth refocusing pulses (SSB). SSGR performed best regarding FS, homogeneity of FS, and preservation of tissue signal intensity.

Keywords

abdominal acceleration acceptable accomplished achieved acquisition additional advantage alternating amplitude amplitudes another applied apply around away axis bandwidth blue body built capable channel chemical chosen circularly coil combination combined considering custom decrease diagnostic distributed duration easily equipped erector especially evaluation example excitation excited exemplary fast favorable female field formed gets gradient gradients hand hiding highest homogeneous hospital identically improper inherent inhomogeneities institute intensities intensity interleaved intra kidney kidneys larger largest latter lead leading like liver longer loss mark material measured modes muscle nearly necessary next nominal novel opposite organs overall pancreas park part partial partially placed polarity polarized portions preceding preparation preservation product profit prolonged proposed protocols pulse pulses radiology recently reduce reduction refocusing regarding rely resolution reversal satisfying saturation selection selective sets severe shimming shims shot slice slices smaller spin spinal spleen spoiler strength subcutaneous sufficient supervision suppression switching system tissue tissues transversal variants volunteer volunteers water ways whole years