64层螺旋CT多期相融合重组技术评估门静脉高压价值的初步探索  

The Value of 64-slice Spiral CT Angiography with Multi-phase Merge Imaging Technique in the Evaluation of Portal Hypertension

作　　者：丁莺[1] 严福华[1] 李清海[1] 陈刚[1] 陆秀良[1] 缪熙音[1] 

机构地区：[1]复旦大学附属中山医院放射科,上海200032

出　　处：《临床放射学杂志》2009年第6期806-809,共4页Journal of Clinical Radiology

摘　　要：目的探讨64层螺旋CT多期相融合重组后处理技术在显示门静脉高压程度及侧支血管开放情况中的应用价值。资料与方法80例临床确诊的门静脉高压患者行腹部增强扫描,均行门静脉期单期及多期相融合门静脉重组。由两位放射科医师对重组的图像进行评估,包括静脉血管显示清晰度、门静脉显示的级别及门静脉高压侧支血管开放的情况。结果运用多期相融合重组技术显示门静脉1～4级血管的清晰度优于门静脉期单期重组,差异具有统计学意义;在显示门静脉分支的级别方面,融合重组技术显示2～5级的血管优于单期重组,差异有统计学意义,而显示1级和6级血管两者差异无统计学意义;融合重组技术有效显示门静脉高压侧支循环开放者54例,而门静脉期重组显示35例,两者差异具有统计学意义。结论运用64层螺旋CT多期相融合重组后技术方式可更清晰地显示门静脉走行及侧支血管开放情况,更加准确地评估门静脉高压。Objective To discuss the value of 64 slice spiral CT angiography with multi-phase merge imaging technique in the assessment of the degree of portal hypertension and its collateral circulation. Materials and Methods Contrast enhanced abdominal scanning was performed with 64-slice spiral CT in 80 cases with portal hypertesion. CT portography of all cases were done with portal vein phase imaging and multi-phase merge imaging respectively. All CTA images were reviewed by two radiologists to assess the definition, grade of portal vein and the opening of collateral circulation of portal hypertension. Results CT portography with muhi-phase merge imaging technique was superior to CT portography with portal vein phase imaging in the definition portal vein of 1 -4 grade, statistical significant difference was found between two groups （ P 〈 0.05 ）. In the demonstration of the branch of portal vein, there was statistical significant difference between two groups in demonstrating 2 - 5 grade（ P 〈 0.05 ） , but there was no difference in demonstrating 1 and 6 grade portal vein respectively. CT portography with multi-phase merge imaging technique was also more effectively than CT portography with portal vein phase imaging in showing collateral vessels of portal hypertension. Conclusion CT portography with multi-phase merge imaging can show more clearly the portal vein and collateral vessels, and evaluate more accurately the portal hypertension.

关 键 词：体层摄影术 X线计算机 门静脉 融合重组 

分 类 号：R816.5[医药卫生—放射医学]