Kwok, Pingling and Waldeck, A. and Strutz, Jürgen (2003) How do metallic middle ear implants behave in the MRI? LARYNGO-RHINO-OTOLOGIE, 82 (1). pp. 13-18. ISSN 1615-0007
Full text not available from this repository. (Request a copy)Abstract
Background: Magnetic resonance imaging (MRI) has gained in frequency and importance as a diagnostic procedure. In respect to the close anatomical relationship in the temporal bone it is necessary to know whether it is hazardous to patients with metallic middle ear implants regarding displacement and rise in temperature. For the MR image quality artefacts caused by metallic prostheses should be low. Methods: Four different stapes prostheses made from titanium, gold, teflon/platinum and teflon/steel, a titanium total ossicular reconstruction prosthesis (TORP) and two ventilation tubes (made from titanium and gold) were tested in a 1.5 Tesla MRI machine regarding their displacement. All objects were first placed in a petridish, then suspended from a thread and finally immersed in a dish filled with Gadolinium. Temperature changes of the implants were recorded by a pyrometer. Results: None of the implants moved when they were placed in the petridish or suspended from the thread. On the water surface the teflon/platinum and the teflon/steel pistons adjusted their direction with their axis longitudinally to the MRI scanner opening and the teflon/steel piston floated towards the MRI-machine when put close enough to the scanner opening. No rise in temperature was recorded. All implants showed as little artefacts that would still make an evaluation of the surrounding tissue possible. Conclusion: Patients with any of the metallic middle ear implants that were examined in this study may undergo MRI-investigations without significant adverse effects.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RESONANCE-IMAGING FIELDS; POTENTIAL HAZARDS; COCHLEAR IMPLANTS; COMPATIBILITY; PROSTHESES; ARTIFACTS; DEVICES; MRI; metallic middle ear implants; displacement; rise in temperature; artefacts |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Sep 2021 13:30 |
| Last Modified: | 22 Sep 2021 13:30 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39488 |
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