Magnetic resonance imaging after cochlear implants

作     者：Naif Bawazeer Hella Vuong Sophie Riehm Francis Veillon Anne Charpiot 

作者机构：Department of Otolaryngology-Head & Neck Surgery Umm Al-Qura University Department of Otorhinolaryngology and Head and Neck Surgery Hautepierre Hospital University of Strasbourg Department of Radiology Hautepierre Hospital University of Strasbourg 

出 版 物：《Journal of Otology》 (中华耳科学杂志（英文版）)

年 卷 期：2019年第14卷第1期

页      面：22-25页

核心收录：

学科分类：10[医学] 

主　　题：MRI Cochlear implant Risk 

摘      要：Introduction: Most cochlear implants are currently compatible with magnetic resonance imaging(MRI) up to 3 ***, this does not completely eliminate the risk of serious accidents. Implant displacements and other adverse events with compatible implants have been reported in the *** reports: Among the six patients who had MRI after receiving implants at our center, we report three cases with adverse events related to the examination. The first case was complicated by magnet displacement with partial demagnetization. The second case showed total demagnetization, which necessitated removal and reimplantation of the implant. The third case involved severe pain sensation which disrupted the MRI scan. The smallest artifact was found with 3D MRI angiography, and largest artifact was found with diffusion and T2 ***: Moving the patient into the MRI apparatus must be supervised by an otorhinolaryngology specialist or an experienced radiologist. It is important to consider the magnetic field directions, so that angle between the implant magnetic fields and the MRI B0 always remains less than or equal to 90°. In addition, we recommend the use of an arrow drawing to facilitate the orientation of the magnetic field directions. Furthermore, to prevent magnet displacement, we recommend systematic use of a protective splint in addition to bandaging.