Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery and the Comprehensive Hearing Center, University of Wuerzburg, Josef-Schneider-Strasse 11, 97080, Wuerzburg, Germany.
Insitute for Diagnostic and Interventional Neuroradiology, University of Wuerzburg, Bavaria, Germany.
Eur Arch Otorhinolaryngol. 2022 May;279(5):2309-2319. doi: 10.1007/s00405-021-06924-0. Epub 2021 Jun 8.
For further improvements in cochlear implantation, the measurement of the cochlear duct length (CDL) and the determination of the electrode contact position (ECP) are increasingly in the focus of clinical research. Usually, these items were investigated by multislice computed tomography (MSCT). The determination of ECP was only possible by research programs so far. Flat-panel volume computed tomography (fpVCT) and its secondary reconstructions (fpVCT) allow for high spatial resolution for the visualization of the temporal bone structures. Using a newly developed surgical planning software that enables the evaluation of CDL and the determination of postoperative ECP, this study aimed to investigate the combination of fpVCT and otological planning software to improve the implementation of an anatomically based cochlear implantation.
Cochlear measurements were performed utilizing surgical planning software in imaging data (MSCT, fpVCT and fpVCT) of patients with and without implanted electrodes.
Measurement of the CDL by the use of an otological planning software was highly reliable using fpVCT with a lower variance between the respective measurements compared to MSCT. The determination of the inter-electrode-distance (IED) between the ECP was improved in fpVCT compared to MSCT.
The combination of fpVCT and otological planning software permits a simplified and more reliable analysis of the cochlea in the pre- and postoperative setting. The combination of both systems will enable further progress in the development of an anatomically based cochlear implantation.
为了进一步提高人工耳蜗植入的效果，耳蜗管长度（CDL）的测量和电极接触位置（ECP）的确定越来越成为临床研究的焦点。通常，这些项目都是通过多层计算机断层扫描（MSCT）进行研究的。到目前为止，ECP 的确定只能通过研究方案来实现。平板容积计算机断层扫描（fpVCT）及其二次重建（fpVCT）可以实现对颞骨结构的高空间分辨率可视化。本研究旨在利用一种新开发的能够评估 CDL 和确定术后 ECP 的手术规划软件，研究 fpVCT 和耳科规划软件的结合，以提高基于解剖结构的人工耳蜗植入的实施效果。
在有和没有植入电极的患者的成像数据（MSCT、fpVCT 和 fpVCT）中，使用手术规划软件进行耳蜗测量。
使用耳科规划软件测量 fpVCT 的 CDL 非常可靠，与 MSCT 相比，各次测量之间的差异更小。与 MSCT 相比，fpVCT 中 ECP 之间的电极间距离（IED）的确定得到了改善。
fpVCT 和耳科规划软件的结合允许在术前和术后更简化和更可靠地分析耳蜗。这两个系统的结合将使基于解剖结构的人工耳蜗植入的发展取得进一步进展。
