64层螺旋CT在活体肝门静脉三维重建中的应用

目的:探讨64层螺旋CT应用于正常人体肝门静脉研究的可行性,观察三维重建肝门静脉的一般形态及变异.方法:153例正常受试者经肘正中静脉注射造影剂后,使用64层螺旋CT进行上腹部扫描,图像采集后经容积再现(VR)技术重建肝门静脉.结果:肝门静脉分5型:a型: 83 7%;b型:7 8%;c型:7 8%;d型:无;e型:0 7%.结论:64层螺旋CT可以作为研究活体肝门静脉形态的有效手段,三维重建能更准确、全方位地显示肝门静脉的正常解剖类型和变异.

Three-dimensional reconstruction of the hepatic portal vein based on data from 64-slice spiral computed tomography

Objective:To explore the feasibility for reconstructing normal adult portal vein by using 64-slice spiral computed tomography, and therefore to observe the morphology of the portal vein, and find out its general distribution. Methods: After injecting constrast media through the median cubital vein, 153 volunteers underwent contrast-enhanced CT angiogra-phy of epigastric region utilizing 64-slice spiral computed tomography. Images were collected, and then the hepatic portal veins were reconstructed three dimensionally with volume rendering (VR). Results:In 3D reconstructed images, 83. 7% of the hepatic veins were classified into type a, while the type b, c, d and E occupied 7. 8%, 7. 8%, 0% and 0. 7%. Conclusion:64-slice spiral computed tomography is a useful tool to study the anatomy of the hepatic veins due to its advantage in 3D reconstruction, including complete and accurate display of the hepatic vein and its adjacent structures.