Neri E, Caramella D, Battolla L, Cosottini M, Scasso C A, Bruschini P, Pingitore R, Bartolozzi C
Department of Oncology, University of Pisa, Italy.
Am J Otol. 2000 Nov;21(6):799-803.
To evaluate the inner anatomy of the auditory apparatus by means of virtual endoscopy of spiral computed tomography (CT) data sets.
Virtual endoscopy permits simulation of the fiberoptic endoscopy perspective by processing CT or magnetic resonance images.
Seven formalin-fixed specimens of human mastoid were scanned with spiral CT with the following protocol: beam collimation 1 mm, pitch ratio 1, reconstruction spacing 0.2 to 0.5 mm, field of view 90 mm. For the generation of endoscopic views of the auditory spaces, the axial images were processed with Navigator software 2.0 running on UltraSparc I workstation.
Virtual endoscopy allowed the demonstration of the external auditory canal, the head and handle of the malleus, the stapes and incudostapedial articulation, the corpus, the long process of the incus with its lenticular process and the short limb, the malleoincudal articulation, the rounded promontory, the round and oval windows, and Prussak's space. From inside the basal turn of the cochlea, virtual endoscopy showed the orifices of the fenestrae cochlea and vestibuli, the origin of the lateral and the anterior semicircular canals, and the basal turn of cochlea. The optimal perspectives that allowed demonstration of the anatomical details of the middle and inner ear are described.
Virtual endoscopy allows the generation of inner views of the auditory spaces. This new method of image processing can be proposed as an integrative tool of spiral CT imaging.
通过螺旋计算机断层扫描（CT）数据集的虚拟内镜检查来评估听觉器官的内部解剖结构。
虚拟内镜检查通过处理CT或磁共振图像来模拟纤维内镜的视角。
对7个经福尔马林固定的人类乳突标本进行螺旋CT扫描，扫描方案如下：束准直1毫米，螺距比1，重建间距0.2至0.5毫米，视野90毫米。为生成听觉空间的内镜视图，轴向图像在UltraSparc I工作站上运行的Navigator软件2.0中进行处理。
虚拟内镜检查能够显示外耳道、锤骨头部和柄、镫骨及砧镫关节、砧骨体、砧骨长突及其豆状突和短脚、锤砧关节、圆形岬、圆窗和卵圆窗以及普鲁萨克间隙。从耳蜗底转内部，虚拟内镜检查显示了蜗窗和前庭窗的开口、外半规管和前半规管的起点以及耳蜗底转。描述了能够显示中耳和内耳解剖细节的最佳视角。
虚拟内镜检查能够生成听觉空间的内部视图。这种新的图像处理方法可作为螺旋CT成像的一种综合工具。
