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Abstract #3660

Spectrally-Presaturated Modulation (SPM): an Efficient Fat Suppression Technique for STEAM-based Cardiac Imaging Sequences

Ahmed Fahmy 1 , El-Sayed H. Ibrahim 2 , and Nael Osman 3

1 Cairo University, Cairo, Egypt, 2 University of Michigan, Ann Arbor, MI, United States, 3 Johns Hopkins University, Baltimore, MD, United States

Stimulated-echo acquisition mode (STEAM) is a key pulse sequence in MRI in general, and in cardiac imaging in particular, as it allows for marking the modulated magnetization and saving it from rapid T2 relaxation. Speeding up the temporal-resolution of STEAM-based sequences is desirable, although it is compromised in cases when fat-suppression is applied. In this work, we present an efficient fat-suppression technique (Spectrally-Presaturated Modulation (SPM)) for STEAM-based sequences without affecting the temporal-resolution, scan-time, or SAR-level compared to other fat suppression techniques (e.g. spectral-spatial selective-pulses (SSSP) and chemical-shift selective (CHESS)), which could result in accurate parameter measurement and improved image analysis.

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