ArticleMagnetic resonance in medicine2016
Peripheral nerve stimulation characteristics of an asymmetric head-only gradient coil compatible with a high-channel-count receiver array.
Article in Magnetic resonance in medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.
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46 citing papers in PubMed, 1 synthesis or guideline pooled it.
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- Experimental validation of a PNS-optimized whole-body gradient coil.Magnetic resonance in medicine · 2024Article
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- Evaluation of a compact 3 T MRI scanner for patients with implanted devices.Magnetic resonance imaging · 2023Article
- Generalized magnetostatic target field method for shielded magnetic field coils in a separable coordinate system.Journal of applied physics · 2023Article
- Improved Resting-State Functional MRI Using Multi-Echo Echo-Planar Imaging on a Compact 3T MRI Scanner with High-Performance Gradients.Sensors (Basel, Switzerland) · 2023Article
- Minimizing susceptibility-induced BOLD sensitivity loss in multi-band accelerated fMRI using point spread function mapping and gradient reversal.Physics in medicine and biology · 2023Article
- Calibration of concomitant field offsets using phase contrast MRI for asymmetric gradient coils.Magnetic resonance in medicine · 2023Article
- Systematic Dimensional Analysis of the Scaling Relationship for Gradient and Shim Coil Design Parameters.Magnetic resonance in medicine · 2022Article
- Improved Brain MR Imaging from a Compact, Lightweight 3T Scanner with High-Performance Gradients.Journal of magnetic resonance imaging : JMRI · 2022Article
- Average SAR prediction, validation, and evaluation for a compact MR scanner head-sized RF coil.Magnetic resonance imaging · 2022Article
- Review
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Authors and funding
14 authors.
Funding
Abstract
purposeTo characterize peripheral nerve stimulation (PNS) of an asymmetric head-only gradient coil that is compatible with a commercial high-channel-count receive-only array.
methodsTwo prototypes of an asymmetric head-only gradient coil set with a 42-cm inner diameter were constructed for brain imaging at 3T with maximum performance specifications of up to 85 mT/m and 708 T/m/s. Tests were performed in 24 volunteers to measure PNS thresholds with the transverse (x = left-right; y = anterior-posterior [A/P]) gradient coils of both prototypes. Fourteen of these 24 volunteers were also tested for the z-gradient PNS in the second prototype and were scanned with high-slew-rate echo planar imaging (EPI) immediately after the PNS tests.
resultsFor both prototypes, the y-gradient PNS threshold was markedly higher than the x-gradient threshold. The z-gradient threshold was intermediate between those for the x- and y-coils. Of the 24 volunteers, only two experienced y-gradient PNS at 80 mT/m and 500 T/m/s. All volunteers underwent the EPI scan without PNS when the readout direction was set to A/P.
conclusionMeasured PNS characteristics of asymmetric head-only gradient coil prototypes indicate that such coils, especially in the A/P direction, can be used for fast EPI readout in high-performance neuroimaging scans with substantially reduced PNS concerns compared with conventional whole body gradient coils. Magn Reson Med 76:1939-1950, 2016. © 2015 International Society for Magnetic Resonance in Medicine.
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