【摘要】 作者通过对８４侧颞下颌关节老年尸体标本标准侧位体层片和薛氏位片Ｘ线检查结果与标本肉眼观骨、软骨病变结果进行比较分析，发现：①Ｘ线病变检出率与肉眼观病变程度有关：病变程度愈重，Ｘ线检出率愈高；②Ｘ线检查的敏感度及预测阴性率与病变范围指数呈正相关关系，特异度及预测阳性率与病变范围指数呈负相关关系；这一结果说明，骨关节病变范围愈大，Ｘ线检查的敏感度愈高，预测阴性率愈高，即对骨病变的阳性符合率愈高，漏诊率愈低；同时表明，骨关节病变范围愈大，Ｘ线检查特异度愈低，预测阳性率愈低，即阴性符合率愈低，误诊率增加；③关节标准侧位体层片、薛氏位片以及标准侧位体层片加薛氏位片三种方法的检查结果，其敏感度和特异度均不能令人满意，且漏诊率较高，因此建议临床推广多层侧位体层摄影的检查方法。更多还原

【Abstract】 Abstract84 cadavers’ temporomandibular joints were used tocompare the results shown in standard lateral tomo-graphs and Schuller’s position films with gross views onthe bone and cartilage changes.The results and conclusions were as follows :(1) The posrtive rates of the radiographic evidenceswere associated with the degrees of the macroscopic le-sions. The more severe the macroscopic lesion, thehigher the positive rate of radiographic evidence.(2) The sensitivity of radiographic examinationwas positively correlated with the extent of the macro-scopic lesion. So, the negative predictive value was.However, the specificity and the positive predictive val-ue of the radiographic examination were negatively cor-related with macroscopic change index. It has beenfound that the more the extent of osteoarthrosischanges, the higher the sensitivity of radiographic ex-amination; the higher the negative predictive values,the higher the positive rate of radiographic evidence,and the lower the underdiagnosis rate was. Meanwhile ,the more the extent of bone pathological changes in thejoint , the lower specificity of the radiographic examina-tion , and the lower the positive predictive values and themisdiagnosis is increased.(3) The radiographic diagnostic value based on thestandard latreal tomographs of TMJ , Schuller’s positionfilms or based on the both methods was not satisfied. Itsunderdiagnosis rate was higher. Therefore, we suggestthat multiple-layers lateral tomography should be widelyused in the clinical practice.更多还原