摘要
Abstract
Objective To assess the efficacy of 64-slice spiral computed tomography (CT)in displa-ying cystic duct and its anatomical association with the calot triangle.Methods Seventy six patients who had not undergone upper abdominal surgery were examined with 64-slice spiral CT.After enhanced CT scan,the location of cystic arteries and anatomical relationship with the calot triangle on the axial and coronal multiplanar images during arterial phase was evaluated.The origin of cystic arteries was assessed.The imaging scores of the cystic arteries and duct were obtained.Fifty four among 76 patients also received ultrasound examination. The accuracy rate between 64-slice spiral CT and ultrasound examination in displaying cystic arteries was statis-tically compared.Results A total of 89 cystic arteries were delineated on 64-slice spiral CT images in 75 of 76 patients(98.7%).One cystic artery was found in 61 patients(81 .3%),and two in 1 4(1 8.7%).The cystic arteries originated from the right hepatic arteries (78 /89,87.6%),gastroduodenal arteries (4 /89, 4.5%),left hepatic arteries (3 /89,3.4%),middle hepatic arteries (2 /89,2.2%),variant right hepatic artery(1 /89,1 .1 %)and proper hepatic artery(1 /89,1 .1 %).The anatomical position of the cystic arteries and the calot triangle were explicitly delineated including 65 cystic arteries(73.0%)inside and 24(27.0%) outside the calot triangle.The imaging score was one point in 1 8 cystic arteries and two points in 71 ,and one point in six cystic ducts and two points in 69.The accuracy rate of 64-slice spiral CT was significantly higher compared with that of ultrasound examination in displaying the anatomy of cystic arteries(100% vs.85.2%,χ2=44.022,P <0.001 ).Conclusion Application of 64-slice spiral CT can be used to provide anatomical struc-tures of the cystic arteries and the anatomical relationship with the calot triangle.关键词
胆囊动脉/胆囊三角/电子计算机X射线断层扫描技术Key words
Cystic artery/Calot triangle/X-ray computed tomography
