Todt Ingo, Rademacher Grit, Wagner Jan, Göpel Friederike, Basta Dietmar, Haider Ernst, Ernst Arne
Department of Otolaryngology, UKB, Hospital of the University of Berlin (Charité Medical School), Berlin, Germany.
Acta Otolaryngol. 2009 Sep;129(9):966-70. doi: 10.1080/00016480802495388.
The modified round window insertion enables reproducible insertion into the scala tympani as demonstrated by comparing the 64-CT scanning data and the surgeon's reports.
To estimate the postoperative cochlear implant electrode position using a modified round window approach.
In a prospective study, 82 patients were operated via a modified round window approach to insert primarily into the scala tympani. Surgery had been performed from 2005 to 2008, implanting a Nucleus Freedom RECA device (Cochlear Corp.) (n = 43) or 90 k Helix device (Advanced Bionics Corp.) (n = 39). The array localization within the cochlea was determined by axial scanning overview, digital reconstruction of a 64-slice CT and by evaluation of the surgeon's report.
In 78 (95.1%) patients, the array could be located in the scala tympani. In four cases, the position of the electrode was changed intracochlearly from the scala tympani to the scala vestibuli. In three additional cases, the scala vestibuli was inserted intentionally because the tympanic scale was found to be obstructed intraoperatively due to ossification. There were no significant differences between the intraoperative positioning and postoperative localization of the electrode arrays of the two manufacturers.
通过比较64层CT扫描数据和外科医生的报告表明，改良的圆窗插入法能够可重复地插入鼓阶。
使用改良的圆窗入路评估人工耳蜗植入电极术后的位置。
在一项前瞻性研究中，82例患者通过改良的圆窗入路进行手术，主要插入鼓阶。手术于2005年至2008年进行，植入Nucleus Freedom RECA装置（科利耳公司）（n = 43）或90 k Helix装置（先进生物电子公司）（n = 39）。通过轴向扫描概述、64层CT的数字重建以及对外科医生报告的评估来确定耳蜗内电极阵列的定位。
78例（95.1%）患者的电极阵列可位于鼓阶。4例患者电极在耳蜗内从鼓阶移位至前庭阶。另外3例患者因术中发现鼓阶因骨化而阻塞，故有意插入前庭阶。两家制造商的电极阵列术中定位和术后定位之间无显著差异。
