16层螺旋CT对胆总管下段梗阻病变的诊断价值

目的探讨16层螺旋CT及其多平面重组技术（MPR）对胆总管下段梗阻病变的临床应用价值。方法38例胆总管梗阻的病例均采用16层螺旋CT进行扫描，在工作站上进行MPR影像后处理，并对结果进行比较和综合分析。结果38例病例中，胆总管中下段结石21例，胆总管癌8例，壶腹癌6例，胆管炎3例。16层螺旋CT及其多平面重组技术观察病变的大小范围、形态、密度等改变，对病变显示满意。结论多层螺旋CT重建能提供病变非常有价值的空间关系信息，对胆总管中下段梗阻定位准确，定性率较高；临床应用价值大，有利于临床医师选择治疗方案，制订手术计划。

Clinical Application of 16-Slice Spiral CT in the Diagnosis of Obstruction of the Lower Segment of the Common Bile Duct

Objective To evaluate the value of 16-slice spiral CT(16-slice SCT) with its MRP in the diagnosis of obstruction of lower segment of the common bile duct.Methods Thirty-eight patients with obstruction of middle-lower segment of the common bile duct underwent 16-slice SCT.Images obtained with postprocessing techniques in MPR performed on a workstation for each case were reviewed.Results Among 38 cases,21 were found stone in the middle-lower segment of the common bile duct;8 were of cancer of the common bile duct;6 were of carcinoma of ampulla;3 were of cholangitis.The 16-slice SCT with MPR correctly demonstrated details and density,shape and size of lesions.Conclusion Sixteen-slice SCT with MPR techniques could provide valuable spatial information of obstruction of lower segment of the common bile duct which correlated well with that of pathological anatomy.