Abstract #5046

Fast MREIT acquisition using Multi-Band and SENSE Techniques

Munish Chauhan¹, Michael Schär², Sulagna Sahu¹, Thomas H Mareci³, and Rosalind J Sadleir¹

¹School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States, ²Department of Radiology, Johns Hopkins University, Baltimore, MD, United States, ³Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, United States

Recent studies demonstrated the first current density and conductivity tensor images of human heads during transcranial electrical stimulation (tES), using MREIT techniques. These techniques allowed imaging of three 5-mm slices in a sequence lasting 12 minutes, a typical therapeutic tES administration time. To obtain whole brain coverage, it is important to accelerate existing MREIT sequences. In this study, we combined our existing Gradient-Echo (mFFE) MREIT acquisition methods with parallel imaging. We found the acquisition speed of image data reflecting current distributions in tES was improved 8 times by using Multi-Band (MB) imaging, while maintaining good image quality.

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