Meeting Banner
Abstract #1198

Phase-Based B1 Mapping in a 65 mT Single-Sided Prostate MRI Scanner

William A Grissom1, Meredith Sadinski2, Alek Nacev2, and Muller De Matos Gomes2
1Biomedical Engineering, Vanderbilt University, Nashville, TN, United States, 2Promaxo, Oakland, CA, United States


B1 mapping is important to characterize non-uniform coil geometries and to optimize imaging sequences and image reconstructions in low-field MRI, but is made challenging by point-of-care single-sided imaging geometries with large frequency bandwidths and B1 ranges. We propose a high-bandwidth phase-based B1 mapping technique based on a CHORUS pulse sequence with alternated frequency sweep polarities, which has a wide (40 kHz) imaging bandwidth and high B1 dynamic range. The sequence was implemented and validated on a 65 mT single-sided prostate MRI scanner in phantom scans with butterfly coil transmit and local multichannel receive.

This abstract and the presentation materials are available to members only; a login is required.

Join Here