ArticleMagnetic resonance in medicine2015
A method for safety testing of radiofrequency/microwave-emitting devices using MRI.
Article in Magnetic resonance in medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 15 citations in OpenAlex.
- Multinuclear absolute magnetic resonance thermometry.Communications physics · 2019Article
- Prospects for Millimeter-Wave Compliance Measurement Technologies.IEEE antennas & propagation magazine · 2017Article
- Design and fabrication of a realistic anthropomorphic heterogeneous head phantom for MR purposes.PloS one · 2017Article
- Heat equation inversion framework for average SAR calculation from magnetic resonance thermal imaging.Bioelectromagnetics · 2016Article
- Effects of Anatomical Differences on Electromagnetic Fields, SAR, and Temperature Change.Concepts in magnetic resonance. Part B, Magnetic resonance engineering · 2016Article
- Radiofrequency energy deposition and radiofrequency power requirements in parallel transmission with increasing distance from the coil to the sample.Magnetic resonance in medicine · 2016Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
purposeStrict regulations are imposed on the amount of radiofrequency (RF) energy that devices can emit to prevent excessive deposition of RF energy into the body. In this study, we investigated the application of MR temperature mapping and 10-g average specific absorption rate (SAR) computation for safety evaluation of RF-emitting devices.
methodsQuantification of the RF power deposition was shown for an MRI-compatible dipole antenna and a non-MRI-compatible mobile phone via phantom temperature change measurements. Validation of the MR temperature mapping method was demonstrated by comparison with physical temperature measurements and electromagnetic field simulations. MR temperature measurements alongside physical property measurements were used to reconstruct 10-g average SAR.
resultsThe maximum temperature change for a dipole antenna and the maximum 10-g average SAR were 1.83°C and 12.4 W/kg, respectively, for simulations and 1.73°C and 11.9 W/kg, respectively, for experiments. The difference between MR and probe thermometry was <0.15°C. The maximum temperature change and the maximum 10-g average SAR for a cell phone radiating at maximum output for 15 min was 1.7°C and 0.54 W/kg, respectively.
conclusionInformation acquired using MR temperature mapping and thermal property measurements can assess RF/microwave safety with high resolution and fidelity.
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Registered trials
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.