Radiology Board Practice Questions - Saudi Board Diagnostic Radiology Final Written Exam

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A patient with a cardiac pacemaker requires an MRI. What does the term 'MR Conditional' imply regarding the safety of this implant in the MR environment?

The implant is safe for MR scanning under any magnetic field strength up to 3.0 Tesla. The implant can be safely scanned only under specific, strictly defined conditions of use, such as limits on static magnetic field strength, spatial gradient, and SAR. The implant poses no safety hazards in any MR environment but may cause severe image artifacts. The implant is safe to scan only if the pacemaker is programmed to an asynchronous pacing mode prior to the scan.

Correct Answer:

The implant can be safely scanned only under specific, strictly defined conditions of use, such as limits on static magnetic field strength, spatial gradient, and SAR.

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