结果经颅多普勒检测颈动脉轻度狭窄平均流速的敏感性为88.3%，收缩期峰流速的敏感性为92 . 6 %，特异性为97.3%。

Results Transcranial Doppler had sensitivity of 88.3% (mean flow velocity) and 92.6% (systolic peak flow velocity) with specificity of 97.3% to detect the mild stenosis of carotid artery.

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目的探讨64层螺旋CT在诊断老年及中青年冠状动脉狭窄的敏感性等指标的差异。

Objective To discuss the index difference of sensitivity of 64-slice spiral ct in diagnosing coronary artery stenosis in the elderly and the young.

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结果39例胆道恶性狭窄病例中胆汁细胞学检查阳性26例，敏感性66.7%，血清CA19-9检测阳性28例，敏感性71.8%；

Results Malignant cells were found in bile from 26 of 39 malignant obstruction (66.7%), and serum CA19-9 was positive in 28 (71.8%).

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