Abstract #1231

Experimental Validation of a PNS Optimized Body Gradient Coil

Mathias Davids^1,2, Livia Vendramini¹, Valerie Klein^1,2,3, Natalie Ferris^4,5, Bastien Guerin^1,2, and Lawrence L. Wald^1,2,5

¹Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, ²Harvard Medical School, Boston, MA, United States, ³University Clinics Mannheim, Computer Assisted Clinical Medicine, Mannheim, Germany, ⁴Harvard Graduate Program in Biophysics, Harvard University, Cambridge, MA, United States, ⁵Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States

Synopsis

Keywords: Gradients, Gradients, gradient coil design, high-performance imagingWe report experimental PNS threshold measurements of an asymmetric PNS optimized whole-body gradient coil and compare it to a standard symmetric coil designed without PNS optimization. Stimulation thresholds were measured in 10 healthy adult subjects for five clinically relevant scan positions. The optimized design raised thresholds by up to 47% in four out of the five studied scan positions (head, cardiac, pelvic, and knee imaging positions). These results support the potential value of PNS-optimized asymmetric whole-body gradients for maximizing image encoding performance

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