Anatomical study of presigmoid-retrolabyrinthine approach based on temporal bone high-resolution CT

Abstract

Background: The surgical approach of acoustic neuroma includes translabyrinthine, transcranial fossa, suboccipital retrosigmoid sinus, and presigmoid retrolabyrinthine approach.

Aims/Objective: To provide the anatomical basis for the surgical selection of presigmoid retrolabyrinthine approach by measuring the anatomical parameters of retrolabyrinthine space of the petrous bone by high-resolution CT.

Material and methods: A retrospective study of 208 high-resolution CT (HRCT) images of 104 patients examined in our hospital were analyzed retrospectively. Forty-nine males and 55 females were included in this study. Lines were drawn on the HRCT to measure the morphological data for pre-operational assessment.

Result: Morphological data were retracted from HRCT, for preoperational assessment.

Conclusion and significance: Using the standard postprocessing images of temporal bone HRCT can predict the size of the retrolabyrinthine space and the degree of exposure to the inner auditory canal, providing an important anatomical index for the choice of presigmoid retrolabyrinthine approach.

Chinese abstract

背景：听神经瘤的外科手术方法包括经迷路、经颅窝、枕下乙状窦后和乙状迷路后入路。

目的：通过高分辨率CT测量岩骨路迷后间隙的解剖学参数, 为乙状迷路后入路的手术选择提供解剖学依据。

材料和方法：回顾性分析了我院收治的104例患者的208张高分辨率CT（HRCT）图像。本研究纳入了49名男性和55名女性。在HRCT上划线, 为术前评估测量形态学数据。

结果：从HRCT获得形态学数据, 进行术前评估。

结论和意义：使用颞骨HRCT的标准处理后图像可以预测迷路后间隙的大小和内耳道的暴露程度, 为选择乙状迷路后入路提供了重要的解剖学指数。

Keywords:

• Sigmoid sinus
• labyrinthine
• temporal bone
• high-resolution CT

Disclosure statement

No potential conflict of interest was reported by the authors.