ArticleFrontiers in human neuroscience2020
MRI-Induced Heating of Coils for Microscopic Magnetic Stimulation at 1.5 Tesla: An Initial Study.
Article in Frontiers in human neuroscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 25 citations in OpenAlex.
- Development, validation, and pilot MRI safety study of a high-resolution, open source, whole body pediatric numerical simulation model.PloS one · 2021Trial
- Degradation of biodegradable orthopedic screws does (not) elevate tissue heating under Magnetic Resonance Imaging: Implications for next generation implants.Bioactive materials · 2026Article
- Microfabrication Technologies for Nanoinvasive and High-Resolution Magnetic Neuromodulation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Review
- Article
- A Preliminary Study for Reference RF Coil at 11.7 T MRI: Based on Electromagnetic Field Simulation of Hybrid-BC RF Coil According to Diameter and Length at 3.0, 7.0 and 11.7 T.Sensors (Basel, Switzerland) · 2022Article
- Finding the Location of Axonal Activation by a Miniature Magnetic Coil.Frontiers in computational neuroscience · 2022Article
- Short-pulsed micro-magnetic stimulation of the vagus nerve.Frontiers in physiology · 2022Article
- Planar figure-8 coils for ultra-focal and directional micromagnetic brain stimulation.Journal of vacuum science and technology. B, Nanotechnology & microelectronics : materials, processing, measurement, & phenomena : JVST B · 2021Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
Abstract
purposeDeep brain stimulation (DBS) has proved to be effective in the treatment of movement disorders. However, the direct contact between the metal contacts of the DBS electrode and the brain can cause RF heating in magnetic resonance imaging (MRI) scanning, due to an increase of local specific absorption rate (SAR). Recently, micro coils (μMS) have demonstrated excitation of neuronal tissue through the electromagnetic induction both
methodsWe compared the heating of a μMS coil with a control case of a metal wire. The heating was induced by RF fields in a 1.5 T MRI head birdcage coil (often used for imaging patients with implants) at 64 MHz, and normalized results to 3.2 W/kg whole head average SAR.
resultsThe μMS coil or wire implants were placed inside an anatomically accurate head saline-gel filled phantom inserted in the RF coil, and we observed approximately 1°C initial temperature rise at the μMS coil, while the wire exhibited a 10°C temperature rise in the proximity of the exposed end. The numerical simulations showed a 32-times increase of local SAR induced at the tips of the metal wire compared to the μMS.
conclusionIn this work, we show with measurements and electromagnetic numerical simulations that the RF-induced increase in local SAR and induced heating during MRI scanning can be greatly reduced by using magnetic stimulation with the proposed μMS technology.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.