Furthermore, it is highly recommended that patients change into gowns or surgical scrubs to prevent clothing-related hazards (eg, metal objects become projectiles in the MR environment). However, this may not be feasible at some sites such as mobile MR systems due to space limitations. However, projectiles do pose a serious threat to the patient and those individuals accompanyingthe patient such as the MR radiologists, physicians,nurses, and other allied health personnel. A missed paper clip in a pants or shirt pocket, for example, could result in serious injury.
A recent case example involved a subject with a large, flat metal hook on the pants that was hanging by asingle thread. While the patient was advanced into the1.5-T MR system, the hook was quickly pulled off the pants into the bore, passing over the face of the supinepatient. Denim jackets, pants and overalls often incorporate flat metal buttons that experience significant attraction to the static magnetic field of the MR system. These garments should be removed before any individual enters the magnet room.
A complete pre-MRI procedure screening should optimally include three separate conversations with thepatient or any individual planning to enter the MR environment.The first interview takes place during the initial communication. Questions covered include major safety issues such as aneurysm clips, pacemakers, electronic implants, pregnancy, etc. This would take place at the scheduling of the appointment with the patient, the patient's physician, or the referring physician's office to prevent inappropriate scheduling of MR examinations.