Implantable microstimulator: magnetic resonance safety at 1.5 Tesla.
SCIE
SCOPUS
- Title
- Implantable microstimulator: magnetic resonance safety at 1.5 Tesla.
- Authors
- Shellock, FG; Cosendai, G; Park, SM; Nyenhuis, JA
- Date Issued
- 2004-10
- Publisher
- Research Support
- Abstract
- Rationale and Objective: Ex vivo testing is necessary to characterize implants to determine if it is safe for the patient to undergo a magnetic resonance imaging (MRI) examination. Therefore, the objective of this study was to evaluate MR safety for an implantable microstimulator in association with a 1.5 Tesla MR system. Methods: A microstimulator (RF BION, Alfred E. Mann Foundation for Scientific Research, Valencia, CA) was evaluated for magnetic field interactions and MRI-related heating. The functional aspects of this implant were assessed immediately before and after exposure to MRI (15 different pulse sequences). Artifacts were also characterized. Results: Magnetic field interactions exhibited by the microstimulator will not pose a hazard after a suitable postimplantation period has elapsed. Temperature changes will not pose a risk. The function of the microstimulator was unaffected by MRI. Artifacts will only create a problem if the area of interest is in proximity to this implant (largest artifact area: T1-weighted spin echo, 2291 mm(2); gradient echo, 3310 mm(2)). Conclusion: The overall findings indicated that it is safe for a patient with the microstimulator to undergo MRI at 1.5 Tesla by following specific safety guidelines described herein.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36025
- DOI
- 10.1097/01.RLI.0000138090.43450.EC
- ISSN
- 0020-9996
- Article Type
- Article
- Citation
- INVESTIGATIVE RADIOLOGY, vol. 39, no. 10, page. 591 - 599, 2004-10
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- There are no files associated with this item.
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