Abstract #1422

Single-shot 2D spiral and echo planar imaging at 7 and 10.5 Tesla with field monitoring and correction

Xiaoping Wu¹, Alexander Bratch^1,2, Jerahmie Radder¹, Andrea Grant³, Edward Auerbach¹, Pierre‐Francois Van de Moortele¹, Gregor Adriany¹, and Kamil Ugurbil¹

¹CMRR, Radiology, University of Minnesota, Minneapolis, MN, United States, ²Radiology, Stanford University, Stanford, CA, United States, ³University of Minnesota, Minneapolis, MN, United States

Synopsis

Keywords: High-Field MRI, Data Acquisition, Brain imagingInterest in pursuing MRI at ultra-high field (UHF) is increasing owing to increased SNR. However, MRI at UHF presents acquisition challenges due to decreased T2* and worsened field inhomogeneities. Rapid sampling strategies such as spiral and echo planar (EPI) acquisitions have been proposed to help mitigate these challenges. Incorporation of field monitoring to UHF applications has been demonstrated to improve the reconstruction of these images thanks to direct measurement and correction of spatiotemporal phase accrual. Here we demonstrate field-monitoring-enabled spiral and EPI acquisitions using Pulseq and field cameras.

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