锥形束CT评价人工耳蜗植入的电极深度和位置  

Cochlear Electrode Insertion Depth Angle and Scalar Localization Determined by Cone Beam CT

作　　者：孟娟[1] 王涛[2] 张帆[1] 秦兆冰[1] Meng Juan;Wang Tao;Zhang Fan;Qin Zhaobing(不详;Department of Otology,the First Affiliated Hospital of Zhengzhou University,Zhengzhou,450052,China)

机构地区：[1]郑州大学第一附属医院耳科,郑州450052 [2]郑州大学第一附属医院口腔科

出　　处：《听力学及言语疾病杂志》2024年第1期29-34,共6页Journal of Audiology and Speech Pathology

基　　金：河南省医学科技攻关计划项目(2018020113)。

摘　　要：目的分析人工耳蜗植入后电极植入深度、位置与耳蜗大小、盘旋方式的关系,探讨植入后电极深度的影响因素和电极移位的原因。方法选取植入CI24RE(CA)弯电极30例和SONATA ti100 Standard直电极人工耳蜗装置41例,利用锥形束CT测量术后电极植入长度、植入深度角、电极在耳蜗内的位置,分析上述指标与术前CT评估的耳蜗大小、倾斜角度的关系。结果①术后电极植入深度角和长度均存在较大的个体差异。直电极组平均植入深度角为702±53度,平均植入长度为30.02±1.29 mm;弯电极组平均植入深度角为441±45度,平均植入长度为18.4±1.0 mm,两组间差异有统计学意义(P<0.001)。②电极植入深度角与耳蜗底回的长径和宽径均呈负相关:直电极组r=-0.768(P<0.001)、r=-0.678(P<0.001),弯电极组r=-0.467(P=0.008)、r=-0.471(P=0.008)。电极植入长度与植入深度角呈正相关:直电极组r=0.578(P<0.001),弯电极组r=0.748(P<0.001)。③术后电极移位6例,均为弯电极且位于耳蜗180度位置。弯电极组中电极移位者与未移位者耳蜗底回倾斜角以及第一回和第二回之间的夹角差异有统计学意义(10.28度vs 8.75度,P=0.006;15.23度vs 14.00度,P=0.033)。结论人工耳蜗植入术后电极植入长度和深度角存在较大的个体差异,与耳蜗大小密切相关;耳蜗盘旋方式不同是引起电极移位的原因之一。Objective To investigate the relationship between postoperative cochlear implant electrade insertion depth,the scalar localization of cochlear electrode,cochlear size and coiling pattern,and the factors influencing the postoperative electrode implantation depth and the reasons of dislocation.Methods A total of 41 cases of patients implanted with electrode of SONATA ti100 Standard and 30 cases of patients with CI24RE(CA)modilar electrode were studied.Postoperative insertion length,insertion depth angle of cochlear electrode,and the scalar localization of cochlear electrode were measured.The relationships of the above factors and the parameters of cochlear size,cochlear length,tilt angles collectal via CT scan preoperatively were analyzed.Results①The measurement results showed the insertion depth angle and liner insertion length varied greatly among individuals.The mean insertion depth angle was 702±53 degrees and the mean liner insertion length was 30.02±1.29 mm in the group of SONATA ti100 Standard.The mean insertion depth angle was 441±45 degrees and the mean liner insertion length was 18.4±1.0 mm in the group of CI24RE(CA).②The length and width of cochlear base both had negative correlations with the insertion depth angle in the two groups[SONATA ti100 Standard:r=-0.768,P<0.001&r=-0.678,P<0.001;CI24RE(CA):r=-0.467,P=0.008&r=-0.471,P=0.008].The liner insertion length of the electrode had a positive correlation with the insertion depth angle in the two groups[SONATA ti100 Standard:r=0.578,P<0.001;CI24RE(CA):r=0.748,P<0.001].③6 cases of modiolar electrode were dislocated and the site of the dislocation was at 180 degrees of cochlea.The tilt angle within the first turn of cochlea and angle between the first and second turn of cochlea had significant differences between the group of patients with dislocation and without dislocation(10.28 degrees vs 8.75 degrees,P=0.006;15.25 degrees vs 14.00 degrees,P=0.033).Conclusion The insertion depth angle and the insertion length of electrode varied greatly among ind

关 键 词：人工耳蜗植入 锥形束CT 植入长度 植入深度角 电极位置 

分 类 号：R764.93[医药卫生—耳鼻咽喉科]