摘要
目的 评价第三代CT定量诊断胆囊结石的准确率及敏感性.方法 120例胆囊结石的病人在使用第三代CT检查后7天内施行胆囊切除手术,术后剖开胆囊,进行结石计数和最大结石的最大径线测量.结果 120例胆囊结石患者,其中87例有确切结石计数和测量结果（72.5%）;33例CT检查未发现胆囊结石（27.5%）.CT图像中显示的胆囊结石的数目：均数±标准差＝3±15个;范围为2～82个与手术发现的数目：均数±标准差＝68±316个;范围为2～1326个,两者比较具有显著性差异（P＜0.001）.CT图像发现的胆囊内最大结石的最大径线值：均数±标准差＝1.08±1.06cm,范围为0～2.4cm;与手术测量值均数±标准=1.68±0.14cm范围为0.67～3.1cm,两者比较有显著性差异（P＜0.001）.结论 用第三代CT进行胆囊结石的定量诊断不够准确,敏感性也有不足.
Objective Appraise third - CT fixed quantity diagnose cystic calculus accurately. Methods 120 cases gall - stone patient use third -CT check up after 7days execute gall resection, afterward analyse gall, go on calculus computation and most calculus of utmost directly measure. Results 120 cases gall - stone patient, among 87 cases have assured calculus count and meterage results （72.5%） ;33 cases CT check up not find gall - stone （27.5%）. CT image show gall - stone amount and operation discover comparebe provided ：The average ＋ normal contrast = 3 ± 15, confine for 2 -82 and operation detect amount ：The average ＋ normal contrast = 68 ±316, confine 2 - 1326, both confront exist withdistinct difference（P 〈0.001 ） o CT image show cystic maximal calculus maximal directly and operation measure valuecompare, ：The aver- age ＋ normal contrast = 1.08 ± 1.06cm, confine0 - 2.4cm; surgery meterage ：The average ＋ normal contrast = 1.68 ± 0.14cm confine 0.67 - 3. 1 cm, both confront exist withdistinct difference （ P 〈 0.001 ）. Conclusion Use third - CT apply gall - stone fixed quantity diagnose inadequate nicety,tenderness also deficiency.
