目的 研究16排CT和0.35T磁共 振胰胆管成像(MRCP)诊断胆道系统结石 的临床价值。方法 选取80例胆道系统结 石的患者作为观察对象，CT组(80例)采 用16排CT检查，MRCP组(80例)采用0.35T MRCP检查，以手术结果为标准，比较两种 检查方式的优劣。结果 手术证实80例结 石患者，MRCP组确诊率(93.75%)高于CT 组(75.00%)，组间差异具有统计学意义 (P＜0.05)；MRCP组检查无胆总管扩张结 石直径＜0.8cm确诊率(93.33%)高于CT组 (68.89%)，组间差异具有统计学意义(P ＜0.05)。结论 临床0.35T MRCP对胆道系 统结石的诊断较16排CT确诊率高，特别是 在对直径＜0.8cm、胆总管未发生扩张的 结石诊断中，0.35T MRCP诊断优势明显。

Objective To study 16-slice CT and 0.35T magnetic resonance cholangiopancreatography (MRCP) in the diagnosis of biliary system calculus. Methods 80 patients with biliary system calculi were selected as research subject, patients in the CT group (80 cases) were subject to 16-slice CT examination and patients in the MRCP group (80 cases) were subject to 0.35 T MRCP examination, surgical results serves as criterions to compare the advantages and disadvantages of two types of examinations. Results Surgeries confirmed that the positive rate of confirmation among patients in with calculus (93.75%) was higher than that of patients in the CT group (75.00%), and intergroup difference was significant (P<0.05). The diameter of calculus without bile duct dilatation of the MRCP group was less than 0.8cm, and the positive rate of MRCP group (93.33%) was higher than that of the CT group (68.89%), and the inter-group significant (P<0.05) was significant. Conclusion Clinically 0.35 T MRCP delivers higher positive diagnosis rate that that of 16-slice CT in the diagnosis of biliary calculi, and the diagnosis advantage of 0.35 MRCP was obvious especial for the calculus diagnosis with the diameter less than 0.8 cm without bile duct dilatation.