Bance Manohar, Erb Jason
Department of Otology/Neurotology, Division of Otolaryngology, Dalhousie University.
Otolaryngol Head Neck Surg. 2003 Feb;128(2):251-6. doi: 10.1067/mhn.2003.64.
We sought to test the reliability of a radiologic marker in identifying the vertical portion of the facial nerve in axial computed tomography (CT) temporal bone scans.
At a tertiary care academic center, we used, with a random sample of 25 CT scans, a marker (the "B-line") to identify the facial nerve. The variations in distance from this marker to the facial nerve were measured.
This marker, which consists of a tangent line extrapolated from the posterior border of the basal turn of the cochlea, fell within 1 mm of the facial nerve on average. The average distance from the midpoint of the posterior border of the basal turn of the cochlea to the facial nerve was 11 +/- 1 mm.
This is a very reliable marker for the vertical portion of the facial nerve.
This marker can be used to rapidly find the facial nerve, even in diseased or postsurgical temporal bones.
我们试图测试一种放射学标记物在轴向计算机断层扫描（CT）颞骨扫描中识别面神经垂直段的可靠性。
在一家三级医疗学术中心，我们对25例CT扫描进行随机抽样，使用一种标记物（“B线”）来识别面神经。测量了该标记物到面神经的距离变化。
该标记物由从耳蜗底转后缘外推的切线组成，平均落在距面神经1毫米范围内。从耳蜗底转后缘中点到面神经的平均距离为11±1毫米。
这是一种用于面神经垂直段的非常可靠的标记物。
即使在患病或手术后的颞骨中，该标记物也可用于快速找到面神经。
