团注追踪技术在CT上腹部增强扫描中的应用

Research on the application of CT enhancing scan based on bolus tracking technique in upper abdomen

目的：探讨团注追踪技术（BTT）在上腹部增强扫描的应用。方法：对200例患者运用BTT 进行上腹部螺旋扫描。造影剂按照1.5ml/kg经手背静脉用高压注射器注射，其压力为300Pa，流速为2.5ml/s,注药前扫描1次，注药后不同时相扫描2-3次。结果：188例患者很好地显示出腹主动脉、肝动脉、脾动脉、肝门区血管分支、门静脉及下腔静脉，10例患者因门脉高压导致影 像不理想，2例患者失败。结论：基于BTT的CT上腹部增强扫描可获得满意的图像，并可满足临床诊断的需要。

Objective： To evaluate the application value of CT enhancing scan based on bolus tracking technology in the upper abdomen. Methods： 200 patients were examined by CT in the upper abdomen. Contrast agent was injected through the hand vein at 1.5 ml/kg, with pressure of 300 Pa, flow rate 2.5 ml/s. Before injection, we must complete the first scanning .Then,another 2 ^ or 3 scans were done. Results： 188 cases can show abdominal aorta, hepatic artery, splenic artery, hilar vessel branches, portal vein, inferior vena cava very well. Another two cases failed .The others were not ideal because of portal hypertension. Conclusion： CT enhancing scan based on bolus tracking technique in the upper abdomen can obtain good images to meet clinical needs.