Optimization of MRI Gradient Coils With Explicit Peripheral Nerve Stimulation Constraints.

ABSTRACT: Peripheral Nerve Stimulation (PNS) limits the acquisition rate of Magnetic Resonance Imaging data for fast sequences employing powerful gradient systems. The PNS characteristics are currently assessed after the coil design phase in experimental stimulation studies using constructed coil prototypes. This makes it difficult to find design modifications that can reduce PNS. Here, we demonstrate a direct approach for incorporation of PNS effects into the coil optimization process. Knowledge about the interactions between the applied magnetic fields and peripheral nerves allows the optimizer to identify coil solutions that minimize PNS while satisfying the traditional engineering constraints. We compare the simulated thresholds of PNS-optimized body and head gradients to conventional designs, a

SUBMITTER: Davids M 

PROVIDER: S-EPMC7772273 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature