Gnansia D, Demarcy T, Vandersteen C, Raffaelli C, Guevara N, Delingette H, Ayache N
Oticon Medical CI, Clinical and Scientific Research, 2720, Chemin St.-Bernard, Vallauris, France.
Asclepios Project Team, Inria Sophia Antipolis-Mediterranee Research Centre, Sophia Antipolis, France.
Eur Ann Otorhinolaryngol Head Neck Dis. 2016 Jun;133 Suppl 1:S66-7. doi: 10.1016/j.anorl.2016.04.013. Epub 2016 May 27.
The volume of the cochlea is a key parameter for electrode-array design. Indeed, it constrains the diameter of the electrode-array for low-traumatic positioning in the scala timpani. The present report shows a model of scala timpani volume extraction from temporal bones images in order to estimate a maximum diameter of an electrode-array. Nine temporal bones were used, and passed to high-resolution computed tomography scan. Using image-processing techniques, scala timpani were extracted from images, and cross-section areas were estimated along cochlear turns. Cochlear implant electrode-array was fitted in these cross-sections. Results show that the electrode-array diameter is small enough to fit in the scala timpani, however the diameter is restricted at the apical part.
耳蜗的容积是电极阵列设计的关键参数。实际上，它限制了电极阵列的直径，以便在鼓阶中进行低创伤性定位。本报告展示了一种从颞骨图像中提取鼓阶容积的模型，以估计电极阵列的最大直径。使用了九块颞骨，并进行了高分辨率计算机断层扫描。利用图像处理技术，从图像中提取鼓阶，并沿耳蜗螺旋估计横截面面积。将人工耳蜗电极阵列拟合到这些横截面中。结果表明，电极阵列的直径足够小以适合鼓阶，然而在顶端部分直径受到限制。
