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Septal repair implants: evaluation of magnetic resonance imaging safety at 3 T |
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| Authors: | Shellock Frank G Valencerina Samuel |
| Institution: | Department of Radiology and Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90045, USA Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90045, USA Institute for Magnetic Resonance Safety, Education and Research, Los Angeles, CA 90045, USA |
| Abstract: | Specialized implants are used for transcatheter closure of septal defects, including atrial and ventricular septal defects, and patent foramen ovale. These metallic devices may pose a risk to patients undergoing magnetic resonance imaging (MRI) procedures especially if performed at 3 T. Therefore, this investigation evaluated MRI safety at 3 T for septal repair implants (CardioSEAL Septal Repair Implant and STARFlex Septal Repair Implant, NMT Medical, Boston, MA, USA) by characterizing magnetic field interactions, heating and artifacts. These implants exhibited minor magnetic field interactions; heating was not excessive (+0.5°C); and artifacts will only create a problem if the area of interest is in the same area as or near these devices. Thus, the findings indicated that it would be safe for a patient with these implants to undergo MRI at 3 T or lower. Importantly, because of the minor magnetic field interactions, MRI may be performed immediately after implantation. |
| Keywords: | Artifacts Atrial septal defect Implants Magnetic resonance imaging Patent foramen ovale Safety Septal repair Specific absorption rate Ventricular septal defect |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |