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Abstract #3791

Eye Movement Artifact Suppression Via 2D Spatially Selective RF-Excitation

Paul Wighton1, Matthew Dylan Tisdall1, Andr J. W. van der Kouwe1

1Department of Radiology, MGH, Martinos Center for Biomedical Imaging, Charlestown, MA, United States

In this abstract, we explore the suppression of eye-movement artifacts using a subject-specific, spatially-selective RF-excitation pulse designed to excite only the subject's brain, ensuring no signal (and therefore no artifact) originates from the eyes. A 3D-encoded FLASH sequence was augmented with a 2D-selective RF-excitation pulse. A subject specific 2D brain-excitation shape was generated using a FreeSurfer segmentation of the subject acquired in a previous scan. Compared to a conventional FLASH scan, eye-motion artifacts were significantly suppressed with our modified spatially-selective RF-excitation scan.