Abstract：
BACKGROUND: Using Otoplan software, it is possible to measure the cochlea before cochlear implant surgery. Until now, computed tomography (CT) of the cochlea has been necessary for this purpose. The aim of this study was to find out whether measuring the cochlea with magnetic resonance imaging (MRI) using Otoplan is possible with the same accuracy.
METHODS: The cochlea of 44 patients of the local cochlear implant centre was measured by Otoplan using high-resolution CT-bone and MRI images, and the determined lengths were compared.
RESULTS: No significant difference was found between the cochlear lengths measured, regardless of whether the length measurement was based on a CT or an MRI data set.
CONCLUSIONS: For the determination of cochlear length prior to cochlear implant surgery, MRI images are just as suitable as CT images, therefore CT is not mandatory for length measurement by Otoplan, which could reduce the patient\'s radiation exposure.
METHODS: The cochlea of 44 patients of the local cochlear implant centre was measured by Otoplan using high-resolution CT-bone and MRI images, and the determined lengths were compared.
RESULTS: No significant difference was found between the cochlear lengths measured, regardless of whether the length measurement was based on a CT or an MRI data set.
CONCLUSIONS: For the determination of cochlear length prior to cochlear implant surgery, MRI images are just as suitable as CT images, therefore CT is not mandatory for length measurement by Otoplan, which could reduce the patient\'s radiation exposure.
摘要：
背景：使用Otoplan软件，在人工耳蜗植入手术之前测量耳蜗是可能的。直到现在,为此，必须对耳蜗进行计算机断层扫描（CT）。这项研究的目的是找出是否可以使用Otoplan以相同的精度通过磁共振成像（MRI）测量耳蜗。
方法：通过Otoplan使用高分辨率CT骨和MRI图像测量了44例局部耳蜗植入中心患者的耳蜗，和确定的长度进行了比较。
结果：测得的耳蜗长度之间没有显着差异，无论长度测量是基于CT还是MRI数据集.
结论：在人工耳蜗植入手术前确定耳蜗长度，MRI图像和CT图像一样合适,因此，奥托普兰对长度测量不是强制性的，这可以减少病人的辐射暴露。
方法：通过Otoplan使用高分辨率CT骨和MRI图像测量了44例局部耳蜗植入中心患者的耳蜗，和确定的长度进行了比较。
结果：测得的耳蜗长度之间没有显着差异，无论长度测量是基于CT还是MRI数据集.
结论：在人工耳蜗植入手术前确定耳蜗长度，MRI图像和CT图像一样合适,因此，奥托普兰对长度测量不是强制性的，这可以减少病人的辐射暴露。
