When evaluating a questionable implant for MRI, the MR safety officer's ultimate responsibility is to

• A. Advise and execute
• B. Contact the manufacturer only
• C. Decide
• D. Defer to the radiologist

Answer: (C)

The essential responsibility is to make the final call on whether an implant is safe for MRI and under what conditions. The MR safety officer gathers all safety data—device labeling (whether it’s MR conditional or unsafe), manufacturer information, published literature, and the patient’s clinical context—plus the specifics of the MRI system (field strength, available SAR, and allowable sequences). They weigh the potential hazards, such as heating, torque, device movement, or stimulation, against the expected diagnostic benefit. Based on this assessment, they decide if the scan can proceed and outline the conditions under which it may occur (or determine that it cannot be performed). If data are missing, they determine whether more information is needed or if risk warrants denial until safety can be assured. They may guide the team and implement the plan, but the ultimate safety authorization rests with the safety officer. The radiologist can contribute perspectives, and manufacturers can provide data, but safety approval does not shift to them.