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Validating Numerical Simulations to Support Experimental Testing of MRI Gradient‐Induced Heating of Passive Implants.

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Title: Validating Numerical Simulations to Support Experimental Testing of MRI Gradient‐Induced Heating of Passive Implants.
Authors: Zanovello, Umberto1 (AUTHOR), Arduino, Alessandro1 (AUTHOR), Zilberti, Luca1 (AUTHOR), Schaefers, Gregor2 (AUTHOR), Halaj, Martin3 (AUTHOR), Bottauscio, Oriano1 (AUTHOR) o.bottauscio@inrim.it
Source: Magnetic Resonance in Medicine. Jun2026, Vol. 95 Issue 6, p3584-3593. 10p.
Subjects: Computer simulation, Orthopedic implants, Testing laboratories, Radiation exposure, High temperatures, Metals in surgery, Magnetic resonance imaging
Abstract: Purpose: Numerical simulations can be adopted to aid the evaluation of the interaction between switched gradient fields and metallic implants and estimate the possible temperature increase. Anyway, an analysis of the consistency of their prediction with experiments is lacking, differently from what can be found for exposure to radiofrequency fields. The purpose of this work is to fill this gap. Methods: A systematic comparison between experiments and simulations was conducted, considering commercial metallic orthopedic implants. The complexity of the exposure scenario was gradually increased, starting from the conditions defined in the ISO/TS 10974:2018 standard and moving to more realistic exposure scenarios with sinusoidal or pulsed gradient fields. Results: The computational tools demonstrated an overall good capability in predicting the outcomes of the experimental tests, as long as numerical simulations are properly set up (building of the virtual model, discretization parameters, positioning/orientation of the object). The consistency between simulations and measurements is comparable with the one obtainable under radiofrequency exposure and decreases with exposure complexity. Conclusion: The results pave the way for the use of numerical simulations to support laboratory testing of passive implants heating under time‐varying gradient fields. [ABSTRACT FROM AUTHOR]
Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Validating Numerical Simulations to Support Experimental Testing of MRI Gradient‐Induced Heating of Passive Implants.
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  Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Jun2026, Vol. 95 Issue 6, p3584-3593. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Orthopedic+implants%22">Orthopedic implants</searchLink><br /><searchLink fieldCode="DE" term="%22Testing+laboratories%22">Testing laboratories</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation+exposure%22">Radiation exposure</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Metals+in+surgery%22">Metals in surgery</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink>
– Name: Abstract
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  Data: Purpose: Numerical simulations can be adopted to aid the evaluation of the interaction between switched gradient fields and metallic implants and estimate the possible temperature increase. Anyway, an analysis of the consistency of their prediction with experiments is lacking, differently from what can be found for exposure to radiofrequency fields. The purpose of this work is to fill this gap. Methods: A systematic comparison between experiments and simulations was conducted, considering commercial metallic orthopedic implants. The complexity of the exposure scenario was gradually increased, starting from the conditions defined in the ISO/TS 10974:2018 standard and moving to more realistic exposure scenarios with sinusoidal or pulsed gradient fields. Results: The computational tools demonstrated an overall good capability in predicting the outcomes of the experimental tests, as long as numerical simulations are properly set up (building of the virtual model, discretization parameters, positioning/orientation of the object). The consistency between simulations and measurements is comparable with the one obtainable under radiofrequency exposure and decreases with exposure complexity. Conclusion: The results pave the way for the use of numerical simulations to support laboratory testing of passive implants heating under time‐varying gradient fields. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1002/mrm.70306
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Orthopedic implants
        Type: general
      – SubjectFull: Testing laboratories
        Type: general
      – SubjectFull: Radiation exposure
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      – SubjectFull: High temperatures
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      – SubjectFull: Metals in surgery
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      – SubjectFull: Magnetic resonance imaging
        Type: general
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      – TitleFull: Validating Numerical Simulations to Support Experimental Testing of MRI Gradient‐Induced Heating of Passive Implants.
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            NameFull: Zanovello, Umberto
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              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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