Department of Otorhinolaryngology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland.
Department of Otorhinolaryngology, Kuopio University Hospital, Kuopio, Finland.
Sci Rep. 2023 Jul 6;13(1):10967. doi: 10.1038/s41598-023-37160-7.
The aim of this study was to understand the mastoid volume development in children who undergo cochlear implantation surgery. Cochlear implant (CI) database of our clinic (Kuopio University Hospital) was reviewed for computed tomography (CT) images of CI patients (age under 12 years at the time of implantation) with a minimum time interval of twelve months between their pre- and postoperative CT. Eight patients (nine ears) were found eligible for inclusion. Three linear measurements were taken by using picture archiving and communication systems (PACS) software and the volume of the MACS was measured with Seg 3D software. The mastoid volume increased on average 817.5 mm between the pre- and the postoperative imaging time point. The linear distances measured between anatomical points like the round window (RW)- bony ear canal (BEC), the RW-sigmoid sinus (SS), the BEC-SS, and the mastoid tip (MT)-superior semicircular canal (SSC) increased significantly with the age of the patient at both the pre-op and post-op time points. The linear measurements between key anatomical points and mastoid volume showed a positive linear correlation. The correlation between linear measurement and volume were significant between the MT-SSC (r = 0.706, p = 0.002), RW-SS (r = 0.646, p = 0.005) and RW-BEC (r = 0.646, p = 0.005). Based on our findings from the CI implanted patients and comparing it with the previous literature findings from non-CI implanted patients, we could say that the CI surgery seem to have no effect on the development of mastoid volume in children.
本研究旨在了解行人工耳蜗植入术的儿童乳突体积的发育情况。我们对诊所（于韦斯屈莱大学医院）的人工耳蜗植入（CI）数据库进行了回顾，分析了植入时年龄在 12 岁以下的 CI 患者在术前和术后至少 12 个月的 CT 图像。共发现 8 例（9 耳）符合纳入标准。使用图像存档和通信系统（PACS）软件进行了 3 项线性测量，并使用 Seg 3D 软件测量 MACS 体积。在术前和术后影像学时间点之间，乳突体积平均增加了 817.5mm。在术前和术后，患者的圆窗（RW）-骨性耳道（BEC）、RW-乙状窦（SS）、BEC-SS 和乳突尖（MT）-上半规管（SSC）之间的解剖点之间的线性距离显著增加。在术前和术后时间点，患者的年龄与关键解剖点之间的线性测量值与乳突体积呈正线性相关。线性测量值与体积之间的相关性在 MT-SSC（r=0.706，p=0.002）、RW-SS（r=0.646，p=0.005）和 RW-BEC（r=0.646，p=0.005）之间具有统计学意义。基于我们在植入 CI 的患者中发现的结果，并与非植入 CI 的患者的先前文献结果进行比较，我们可以说 CI 手术似乎对儿童乳突体积的发育没有影响。
