摘要
目的:探讨MSCT和DSA对诊断消化道出血的敏感性。方法:取一段动物小肠做成实验模型,经导管分别以0.1、0.2、0.3、0.4和0.5ml/min的流率将浓度为3.0%的对比剂注入模型肠道内,然后对其进行MSCT扫描;再以同样的注射参数将未稀释的对比剂注入肠道模型内行DSA检查。观察和比较MSCT和DSA对溢出到肠管内对比剂的显示情况。结果:3.0%浓度的对比剂以0.1ml/min的流率进入肠道时MSCT即可以显示,流率为0.2ml/min时可清晰显示,高于0.2ml/min的流率时显示更清晰;未经稀释的对比剂以0.1和0.2ml/min的流率注入肠道,在DSA上不能显示,注射流率达到0.3ml/min时DSA可显示浅淡对比剂影,流率达0.4ml/min及以上时DSA可清晰显示。结论:MSCT显示消化道出血的敏感性高于DSA。
Objective：To study the value of MSCT （multi-slices CT） and DSA in the diagnosis of intestinal hemorrhage with animal experiment. Methods： An experimental model was made with an intestinal segment of a swine and 3.0 contrast medium was injected through a catheter at different injection rates of 0. 1,0.2,0.3,0.4 and 0.5ml/min into the intestinal segment respectively. Then, MSCT was performed immediately. Similarly, the same concentration of contrast medium was delivered with the same injection rates into the intestinal segments and DSA was undergone. The displays of contrast medium infused into the intestinal segments were comparatively observed and evaluated. Results.. With MSCT,contrast medium in the model was able to be detected as the injected rate at 0. lml/min,it could clearly displayed when the injection rate increased to 0.2ml/min. When the injection rates increased to more than 0.2ml/min, the displays of contrast medium infusion in the intestinal segments became even clearer. With DSA,display of contrast medium infusion in the experimental models were not shown at the injection rates of 0.1 and 0.2ml/min,however,it was faintly found as the injection rate was changed to 0.3ml/min. Once the injection rates increased to 0.4ml/min or higher, the infusion of contrast medium in the models were clearly seen. Conclusion： The sensitivity of MSCT was higher than that of DSA in the detection of intestinal hemorrhage.
出处
《放射学实践》
2007年第11期1165-1167,共3页
Radiologic Practice
关键词
体层摄影术
X线计算机
血管造影术
数字减影
胃肠出血
Tomography,X-ray computed
Angiography,digital subtraction
Gastrointestinal hemorrhage
