使用平板CT进行高分辨率二次重建在人工耳蜗植入患者临床评估中的应用
High-resolution secondary reconstructions with the use of flat panel CT in the clinical assessment of patients with cochlear implants.
作者信息
Pearl M S, Roy A, Limb C J
机构信息
From the Division of Interventional Neuroradiology (M.S.P.)Interventional Neuroradiology (M.S.P.), Children's National Medical Center, Washington, DC
Department of Otolaryngology-Head and Neck Surgery (R.R., C.J.L.), Johns Hopkins University School of Medicine, Baltimore, Maryland.
出版信息
AJNR Am J Neuroradiol. 2014 Jun;35(6):1202-8. doi: 10.3174/ajnr.A3814. Epub 2013 Dec 26.
Abstract
Radiologic assessment of cochlear implants can be limited because of metallic streak artifacts and the high attenuation of the temporal bones. We report on 14 patients with 18 cochlear implants (17 Med-El standard 31.5-mm arrays, 1 Med-El medium 24-mm array) who underwent flat panel CT with the use of high-resolution secondary reconstruction techniques. Flat panel CT depicted the insertion site, cochlear implant course, and all 216 individual electrode contacts. The calculated mean angular insertion depth for standard arrays was 591.9° (SD = 70.9; range, 280°). High-resolution secondary reconstructions of the initial flat panel CT dataset, by use of a manually generated field of view, Hounsfield unit kernel type, and sharp image characteristics, provided high-quality images with improved spatial resolution. Flat panel CT is a promising imaging tool for the postoperative evaluation of cochlear implant placement.
摘要
由于金属条纹伪影和颞骨的高衰减，人工耳蜗的放射学评估可能会受到限制。我们报告了14例患者，共植入18个人工耳蜗（17个Med-El标准31.5毫米阵列，1个Med-El中型24毫米阵列），这些患者接受了使用高分辨率二次重建技术的平板CT检查。平板CT显示了植入部位、人工耳蜗路径以及所有216个单独的电极触点。标准阵列的计算平均角插入深度为591.9°（标准差=70.9；范围，280°）。通过使用手动生成的视野、亨氏单位内核类型和清晰的图像特征，对初始平板CT数据集进行高分辨率二次重建，提供了具有更高空间分辨率的高质量图像。平板CT是人工耳蜗植入术后评估的一种有前景的成像工具。
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