Grobovschek M, Oberascher G
Röntgenabteilung der Landesnervenklinik Salzburg.
Digitale Bilddiagn. 1988 Jun;8(2):78-86.
As in traumatology of the head the HR-CT of the injured petrous bone is now the imaging method of choice. With axial and coronary slices one can show not only the different parts of the ear but also the course of the facial nerve and particularly the ossicles in the tympanon. The fractures are nice to show, also the soft tissue lesions like brainprolaps in the tympanon or hematotympanon because of the better density resolution in comparison to the conventional tomography with rather higher radiation dose especially for the eye lenses. Important are the slice thickness of 1.5 mm with special examination technique, that also small fractures of the pyramid particularly the labyrinthous organ and of the ossicles mostly associated with dislocations are detectable. Regarding that with the clinical possibilities there are particular consequences for the otosurgeon. The ossicular dislocations of other than traumatic cause are rare.
在头部创伤学中，受伤颞骨的高分辨率计算机断层扫描（HR-CT）现在是首选的成像方法。通过轴向和冠状切片，不仅可以显示耳朵的不同部位，还可以显示面神经的走行，特别是鼓室内的听小骨。骨折很容易显示出来，鼓室内的软组织病变如脑疝或血鼓室也能显示，这是因为与传统断层扫描相比，其密度分辨率更高，尤其是对晶状体的辐射剂量更高。重要的是采用特殊检查技术时1.5毫米的切片厚度，这样即使是颞骨小骨折，特别是迷路器官和大多伴有脱位的听小骨骨折也能被检测到。鉴于临床可能性，这对耳外科医生有特殊影响。非创伤性原因导致的听小骨脱位很少见。
