Hong Yy, Liu W L, Zeng Q X, Gao S L, Luo R Z
Department of Otolaryngology,Guangzhou Medical University,Guangzhou,511436,China.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2018 Sep;32(17):1316-1318. doi: 10.13201/j.issn.1001-1781.2018.17.006.
The cochlea of children with congenital sensorineural hearing loss with normal inner ear structure was measured and analyzed by high-resolution temporal bone CT(HRCT) imaging technique,its application value before cochlear implantation was evaluated and the appropriate electrode was selected.We collected temporal bone HRCT images of 120 patients with congenital sensorineural hearing loss,according to gender divided into two groups,including 60 males and 60 females.We used the PACS software to measure the distance A(the largest distance from the round window to the lateral wall) and the distance H(height of the cochlea) and calculate the cochlear duct length. Reproducibility of these data were evaluated and the results between the different groups were compared.Measurement of parameter values between the intraobserver and interobserver showed great reproducibility. In the male children group,the measured values are shown as distance A［(8.55±0.31)mm］,distance H［(4.57±0.28)mm］and the cochlear duct length(CDL)［(27.59±1.23)mm］; and in the female children group, the measured values are shown as distance A［(8.45±0.32)mm］,distance H［(4.42±0.34)mm］and the cochlear duct length(CDL)［(27.20±1.17)mm.The A,H,and CDL of the male cochlea were greater than those of the female, the difference was statistically significant(<0.05).Measuring the distance A and distance H of the cochlea and calculating the cochlear duct length CDL can be used to select a suitable length of electrode or to customize a personalized electrode. This is a simple and effective assessment method before cochlear implantation..
采用高分辨率颞骨CT（HRCT）成像技术对内耳结构正常的先天性感音神经性听力损失患儿的耳蜗进行测量分析，评估其在人工耳蜗植入术前的应用价值并选择合适的电极。收集120例先天性感音神经性听力损失患者的颞骨HRCT图像，按性别分为两组，男性60例，女性60例。利用PACS软件测量距离A（圆窗至外侧壁的最大距离）和距离H（耳蜗高度）并计算蜗管长度。评估这些数据的可重复性并比较不同组间的结果。观察者内和观察者间参数值测量显示出高度可重复性。在男童组中，测量值分别为距离A［（8.55±0.31）mm］、距离H［（4.57±0.28）mm］和蜗管长度（CDL）［（27.59±1.23）mm］；女童组中，测量值分别为距离A［（8.45±0.32）mm］、距离H［（4.42±0.34）mm］和蜗管长度（CDL）［（27.20±1.17）mm］。男性耳蜗的A、H和CDL均大于女性，差异有统计学意义（<0.05）。测量耳蜗的距离A和距离H并计算蜗管长度CDL可用于选择合适长度的电极或定制个性化电极。这是人工耳蜗植入术前一种简单有效的评估方法。
