(Saturday, 4/7/2018)
Room: Foyer
Purpose: To give an overview on how to determine the MRI safety and compatibility of an implant or a medical device.
Methods: An introduction to MRI safety including published books and searchable on-line catalogs that list MRI-safe devices and MRI-safe implants with their allowed magnetic field strengths and gradient limitations will be provided. A detailed decision matrix with a step-by step analysis on how to determine the MR safety of implants which are not listed in the literature or in online resources will be introduced. Works on MRI safety, published books and searchable on-line catalogs that list MRI-safe devices and MRI-safe implants with their allowed magnetic field strengths and gradient limitations will be listed. This includes an introduction of the Food and Drug Administration labeling of devices and how to determine manufacturer and model of any implanted devices. Examples will demonstrate how to locate the MRI safety information in the manufacturer's labeling. A decision matrix on how to determine the MR safety will be provided for implants which are not listed in the literature or in on-line resources. This decision matrix includes a step-by-step analysis to determine the MR safety. Responsibilities of MR Safety Officers and MR Medical Directors in the decision process will be discussed. For MR conditional devices, examples of scan conditions such as static magnetic field strength, coil types, specific absorption rate, maximum spatial field gradient and dB/dt limitations will be demonstrated.
Results: A detailed MRI safety screening of implants and devices can prevent injuries. The introduced practical screening guideline improves the safety of patients with implants and medical devices.
Conclusion: Regular MRI safety training for staff, comprehensive screening forms and thorough patient evaluations, patient interviews before the exam, proper patient positioning, and constant visual and audio monitoring during the exam will improve the safety of patients.
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