Cetin Mehmet Ali, Hatipoglu Hatice Gul, Ikinciogullari Aykut, Koseoglu Sabri, Ozcan Kursat Murat, Yuksel Enis, Dere Hüseyin
Department of Otorhinolaryngology, Head and Neck Surgery, Ankara Numune Education and Research Hospital, Ankara, Turkey.
Department of Radiology, Ankara Numune Education and Research Hospital, Ankara, Turkey.
Indian J Otolaryngol Head Neck Surg. 2013 Dec;65(4):345-9. doi: 10.1007/s12070-013-0643-9. Epub 2013 Mar 23.
Carotid-cochlear interval (CCI) is the minimal distance between petrous segment of internal carotid artery (ICA) and basal turn of cochlea. Pulsations of the ICA might create fluid pressure changes and direct stimulation of hair cells on the basilar membrane of basal turn of cochlea which is responsible for mid-tone frequencies. The purpose of this study was to investigate whether CCI has a role in the etiology of mid-tone hearing loss and to obtain reference measurements of CCI on MRI. A total of 117 subjects were consecutively enrolled into this retrospective study during a 4 month period. All examinations were performed on a 1.5 T MRI system. The images were transferred to the workstation and reformatted. The CCI was measured on reformatted 3D FIESTA images. The audiologic findings were correlated. We reviewed the temporal MRI studies of 90 consecutive patients [M/F: 48/42, Mean age 45.6 ± 16.6 (10-78)]. As a total 180 sides were evaluated. The CCI ranged from 0 to 9 mm. The CCI didn't exhibit a significant association with subject age or gender. There were no significant differences between readers or sides. There were statistically significant correlation between CCI and level of frequency and degree of hearing loss (p = 0.004 and p = 0.002). The knowledge of CCI is essential prior to otosurgical procedures. There was linear correlation among CCI and level of frequency and degree of hearing loss. CCI of the group including all types of middle frequency hearing loss was longer compared to the normal group.
颈动脉 - 耳蜗间距（CCI）是颈内动脉（ICA）岩骨段与耳蜗底转之间的最小距离。ICA的搏动可能会引起流体压力变化，并直接刺激负责中音调频率的耳蜗底转基底膜上的毛细胞。本研究的目的是调查CCI在中音调听力损失的病因中是否起作用，并在MRI上获得CCI的参考测量值。在4个月期间，共有117名受试者连续纳入这项回顾性研究。所有检查均在1.5T MRI系统上进行。图像被传输到工作站并重新格式化。在重新格式化的3D FIESTA图像上测量CCI。将听力检查结果进行相关性分析。我们回顾了90例连续患者的颞部MRI研究[男/女：48/42，平均年龄45.6±16.6（10 - 78岁）]。共评估了180侧。CCI范围为0至9毫米。CCI与受试者年龄或性别无显著关联。不同阅片者或不同侧之间无显著差异。CCI与频率水平和听力损失程度之间存在统计学显著相关性（p = 0.004和p = 0.002）。在进行耳外科手术前，了解CCI至关重要。CCI与频率水平和听力损失程度之间存在线性相关性。与正常组相比，包括所有类型中频听力损失的组的CCI更长。
