MRI‐Related Heating of Implants and Devices: A Review

During an MRI scan, the radiofrequency field from the scanner's transmit coil, but also the switched gradient fields, induce currents in any conductive object in the bore. This makes any metallic medical implant an additional risk for an MRI patient, because those currents can heat up the surro...

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Vydáno v:Journal of magnetic resonance imaging Ročník 53; číslo 6; s. 1646 - 1665
Hlavní autoři: Winter, Lukas, Seifert, Frank, Zilberti, Luca, Murbach, Manuel, Ittermann, Bernd
Médium: Journal Article
Jazyk:angličtina
Vydáno: Hoboken, USA John Wiley & Sons, Inc 01.06.2021
Wiley Subscription Services, Inc
Témata:
Aging
Heating
High temperature effects
implant safety
Magnetic resonance imaging
MR safety
parallel transmission
Radio frequency
Risk assessment
Risk management
Risk reduction
Safety management
Scanners
Surgical implants
Transplants & implants
magnetic resonance imaging
MR safety
parallel transmission
implant safety
ISSN:1053-1807, 1522-2586, 1522-2586
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Popis
Shrnutí:During an MRI scan, the radiofrequency field from the scanner's transmit coil, but also the switched gradient fields, induce currents in any conductive object in the bore. This makes any metallic medical implant an additional risk for an MRI patient, because those currents can heat up the surrounding tissues to dangerous levels. This is one of the reasons why implants are, until today, considered a contraindication for MRI; for example, by scanner manufacturers. Due to the increasing prevalence of medical implants in our aging societies, such general exclusion is no longer acceptable. Also, it should be no longer needed, because of a much‐improved safety‐assessment methodology, in particular in the field of numerical simulations. The present article reviews existing literature on implant‐related heating effects in MRI. Concepts for risk assessment and quantification are presented and also some first attempts towards an active safety management and risk mitigation. Level of Evidence 5 Technical Efficacy Stage 5
Bibliografie:Contract grant sponsor: EMPIR programme co‐financed by the Participating States; Contract grant sponsor: European Union's Horizon 2020 research and innovation programme; Contract grant number: 17IND01 – MIMAS.
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ISSN:1053-1807
1522-2586
1522-2586
DOI:10.1002/jmri.27194