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Compatibility of magnetic resonance imaging in patients with orthopedic implants: manufacturer questionnaires

Iwatsuki, Katsuyuki Yoneda, Hidemasa Onishi, Tetsuro Ishii, Hisao Kurimoto, Shigeru Yamamoto, Michiro Tatebe, Masahiro Hirata, Hitoshi 名古屋大学

2020.02

概要

In clinical practice, surgeons have stated that magnetic resonance imaging (MRI) can be performed in patients with titanium alloy implants. However, manufacturers and distributors of many implants may not comply with this common practice. As such, this study aimed to investigate manufacturers’ views on MRI use in patients fitted with their implants. The questionnaire survey was conducted between May and August 2018. Is your product compatible with MRI? ( ) Select from (1) to (3). In case of (1) or (2), up to ( ) Tesla. (1) MRI can be performed even at the sites of implanted fixators. (2) MRI can be performed at sites without implanted fixators. (3) MRI cannot be performed, or the manufacturer does not approve MRI use (cannot issue a certificate). The questionnaire forms were sent to 12 manufacturers, and the response rate was 100%. Manufacturers responded that they could not publicly allow MRI use in patients with their products. These findings do not conclude that MRI cannot be performed in such patients. This survey revealed that currently decisions regarding MRI use is left to the treating physicians. This situation poses a great problem for medical safety and imposes a substantial burden on physicians. As many problems remain in the field of orthopedic surgery, manufacturers of implants should proactively manage issues surrounding the usage of MRI.

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