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Related Experiment Video

Updated: Jul 10, 2026

The Microscopic Transcanal Approach in Stapes Surgery Revisited

The Microscopic Transcanal Approach in Stapes Surgery Revisited

Published on: February 16, 2022

MRI scanners and the stapes prosthesis.

Michael H Fritsch¹

¹Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. mfritsch@iupui.edu

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology

|October 20, 2007

Summary

Most metal stapes prostheses are safe for magnetic resonance imaging (MRI) scans. Only a specific defective McGee piston from 1987 poses a risk and requires an alternative imaging method.

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Last Updated: Jul 10, 2026

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Area of Science:

Otolaryngology
Biomedical Engineering
Radiology

Background:

Concerns exist regarding the safety of implanted metal stapes prostheses in magnetic resonance imaging (MRI) environments.
Increasing MRI scanner power raises concerns about potential ferromagnetic interactions and prosthesis displacement.

Purpose of the Study:

To evaluate the safety of in vivo implanted metal stapes prostheses when exposed to magnetic resonance imaging (MRI) scanners.
To determine if certain metal stapes prostheses can undergo MRI scans without adverse patient outcomes.

Main Methods:

A comprehensive literature review was conducted.
A retrospective review of patient cases was performed.
Physician surveys were utilized to gather clinical data.

Main Results:

One adverse event was documented with a defective stapes prosthesis exposed to an MRI.
Literature and surveys revealed no other adverse clinical reports or patient symptoms related to MRI exposure.
The majority of metal stapes prostheses demonstrated no adverse effects during MRI scans.

Conclusions:

Most patients with metallic stapes prostheses can safely undergo MRI scans.
A specific defective lot of McGee pistons manufactured in 1987 is contraindicated for MRI.
Future stapes prostheses should utilize nonferromagnetic materials like titanium to enhance safety.