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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