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目的:探讨多层螺旋CT(MSCT)对肝脏血管的显示能力和测量肝脏体积的准确性。方法:40例患者行肝脏MSCT双期增强扫描,并对所有病例进行MSCT肝脏血管重建,采用阈值法和层切法对全肝、肝叶体积进行测量,其中19例与手术和数字减影血管造影(DSA)结果进行对比。结果:肝动脉、门静脉、肝静脉血管变异发生率分别为25.0%、2.5%、12.5%;层切法测量全肝及肝右叶平均体积分别为(1269±345)ml、(726±199)ml,阈值法测量全肝及肝右叶体积分别为(1250±346)ml、(713±198)ml,2种方法测量结果差异无统计学意义(P> 0.05);肝右叶切除患者MSCT测量与实际肝右叶体积差异无统计学意义(P>0.05)。结论:MSCT可准确评价肝脏血管和肝脏体积,具有较高的临床应用价值。
Objective: To investigate the accuracy of multi-slice spiral CT (MSCT) in displaying the blood vessels of the liver and measuring the volume of the liver. Methods: Forty patients underwent liver MSCT double-phase contrast-enhanced scanning and MSCT hepatic vascular reconstruction in all cases. Thromboembolism and stratification were used to measure the volume of whole liver and liver lobes. Among them, 19 cases were treated with surgery and digital subtraction angiography Contrast (DSA) results were compared. Results: The incidence of hepatic artery, portal vein and hepatic vein variability were 25.0%, 2.5% and 12.5%, respectively. The mean volumes of whole liver and right lobe of liver were (1269 ± 345) ml and (726 ± 199) (1250 ± 346) ml and (713 ± 198) ml, respectively. There was no significant difference between the two methods (P> 0.05). In the patients with right lobe resection, MSCT Measurement and actual right lobe volume difference was not statistically significant (P> 0.05). Conclusion: MSCT can accurately evaluate the volume of liver and liver, which has high clinical value.