Magnetic resonance imaging of cochlear implant users

DOI
  • KONDO Remi
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • MATSUMOTO Nozomu
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • AKAGI-TSUCHIHASHI Nana
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • NODA Teppei
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • KOMUNE Noritaka
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • NAKAGAWA Takashi
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University

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Other Title
  • MRI を撮影した人工内耳装用者の検討

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Description

<p>We herein report a case series of 18 cochlear implant users who underwent magnet resonance imaging (MRI). The loci of imaging were head/neck (9 cases), thoracic vertebrae (2 cases), shoulder (1 case), liver (1 case), lower vertebrae (2 cases), whole vertebrae (1 case), and pelvis (2 cases). Nine cases had MRI images that contains artifacts caused by the implanted device. Four cases experienced device-related, MRI-derived complications, and one of them underwent magnet replacement surgery. Among the different MRI sequences, diffusion-weighted images and apparent diffusion coefficient (ADC) maps were more negatively influenced by the magnet than T1- or T2-weighted or MR angiography images. Understanding the artifact size and affected structures when MRI is performed on cochlear implant users is useful for determining the indications of MRI and magnet removal surgery, not merely for otolaryngologists but for any healthcare professionals.</p>

Journal

  • jibi to rinsho

    jibi to rinsho 69 (3), 153-159, 2023-05-20

    JIBI TO RINSHO KAI

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