Valvassori G E, Dobben G D
AJNR Am J Neuroradiol. 1985 Sep-Oct;6(5):661-7.
Cochlear otosclerosis can be recognized in most cases by high-definition axial and coronal CT images. However, routine technique does not allow a quantitative measurement of the changes. Reported here is a study of cochlear CT densitometry. The densitometric profile of the cochlear capsule was obtained in 10 ears with normal hearing and 50 ears in 27 patients with known clinical otosclerosis and progressive mixed-type hearing loss. Patients with hearing loss had decreased absorption of as much as 60% in comparison to the normal range. In 42 ears with abnormal densitometric profiles, the changes were visibly apparent on the CT images, whereas in eight others, the densitometric profile alone demonstrated decreased absorption.
在大多数情况下，通过高分辨率轴向和冠状CT图像可以识别耳蜗性耳硬化症。然而，常规技术无法对这些变化进行定量测量。本文报道了一项关于耳蜗CT密度测定的研究。对10例听力正常者的耳朵以及27例已知临床耳硬化症和进行性混合性听力损失患者的50只耳朵进行了耳蜗囊密度测定。与正常范围相比，听力损失患者的吸收减少了多达60%。在42只密度测定轮廓异常的耳朵中，CT图像上可见明显变化，而在另外8只耳朵中，仅密度测定轮廓显示吸收减少。
