Huizing E H, de Groot J A
Acta Otolaryngol. 1987 May-Jun;103(5-6):464-8.
Radiodensity of the bony cochlear capsule was investigated by CT-scanning in 134 ears with otosclerosis and 35 normal control ears. A technique of densitometry of the cochlea was developed comprising the measurement of maximum and minimum density together with mapping of the cochlea and measurement of the density at six predefined points in the cochlear capsule. Bone density in the normal cochlea showed very little interindividual variation. In the otosclerosis patients, minimum density was decreased in 58% of the ears, indicating the presence of a focus. At visual examination, foci were only detectable when density loss exceeded 200 Hounsfield. A positive correlation was found between bone density loss and bone conduction hearing loss with a maximum at 2,000 Hz and the medioventral point of the cochlear wall. The method appears to be useful for the follow-up during fluoride treatment, as is demonstrated by a case report.
通过CT扫描对134例耳硬化症患者的134只耳及35例正常对照耳的骨性耳蜗囊的放射密度进行了研究。开发了一种耳蜗密度测定技术，包括测量最大和最小密度，同时绘制耳蜗图并测量耳蜗囊六个预定义点的密度。正常耳蜗的骨密度个体间差异很小。在耳硬化症患者中，58%的耳最小密度降低，表明存在病灶。在视觉检查中，只有当密度损失超过200亨氏单位时才能检测到病灶。发现骨密度损失与骨传导听力损失之间呈正相关，在2000Hz和耳蜗壁的中腹点处达到最大值。如一份病例报告所示，该方法似乎对氟化物治疗期间的随访有用。
