高解析顳骨電腦斷層攝影在人工電子耳植入評估之應用

The Application of High Resolution Temporal Bone CT in Cochlear Implant Evaluation

李榮輝(Jung-Hui Li) ； 楊志明(Jhih-Ming Yang) ； 林昌平(Chang-Ping Lin) ； 呂鎮中( Chun-Chung Lui) ； 黃仲鋒(Chung-Feng Hwang)

《中華放射線技術學雜誌》 36卷2期 (2012/06) Pp. 83-88

https://doi.org/10.30045/CJRT.201206.0005

摘要

Detailed understanding of the inner ear and the anatomy of auditory nerve is mandatory for the pre-surgical evaluation of Cochlear Implant (CI), Because of the fast revolution of computed tomography (CT) technology; the resolution of the imaging has improved a lot. The application of CT in CI evaluation is now more accurate. This study includes 29 congenital hearing loss cases (13 males and 16 females with a mean age of 4.8 years (from 1.9 to 11.8 years)) in the period between November 2006 and April 2011. Pre-operative and post-operative images were performed, comparing simple X-ray (Stenvers view), Multiple Planar Reformation (MPR) images and combined three-dimension (3D) imaging techniques, such as volume rendering (VR), single and two spikes threshold methods. Results obtained with ANOVA analyzed show MPR+VR scores 4.8621±0.3509 and F (2, 1) =143.415, p＜0.001 (significant) are better than the other two groups. By using the two-spikes- threshold technique, it is easier to demonstrate the implanted route of electrode and is particularly useful for surgeons. Therefore, for evaluation of CI candidates, two-spike-threshold CT technique has great clinical value.

關鍵字

人工電子耳蝸植入術 ； 高解析顳骨電腦斷層 ； 雙峰尖閾值3D影像

並列摘要

Detailed understanding of the inner ear and the anatomy of auditory nerve is mandatory for the pre-surgical evaluation of Cochlear Implant (CI), Because of the fast revolution of computed tomography (CT) technology; the resolution of the imaging has improved a lot. The application of CT in CI evaluation is now more accurate. This study includes 29 congenital hearing loss cases (13 males and 16 females with a mean age of 4.8 years (from 1.9 to 11.8 years)) in the period between November 2006 and April 2011. Pre-operative and post-operative images were performed, comparing simple X-ray (Stenvers view), Multiple Planar Reformation (MPR) images and combined three-dimension (3D) imaging techniques, such as volume rendering (VR), single and two spikes threshold methods. Results obtained with ANOVA analyzed show MPR+VR scores 4.8621±0.3509 and F (2, 1) =143.415, p＜0.001 (significant) are better than the other two groups. By using the two-spikes- threshold technique, it is easier to demonstrate the implanted route of electrode and is particularly useful for surgeons. Therefore, for evaluation of CI candidates, two-spike-threshold CT technique has great clinical value.

並列關鍵字

Cochlear implant ； high resolution temporal bone CT ； two-spike threshold 3D image