摘要
目的:研究多层螺旋CT(MSCT)对消化道出血的诊断价值。方法:对临床疑似消化道出血13例患者行MSCT检查,采用动脉期、静脉期增强扫描,并结合MSCT多平面重建(MPR)、最大密度投影(MIP)图像分析诊断,并与DSA对照,部分病例经手术或临床随访证实。结果:13例临床拟诊消化道出血患者,MSCT明确诊断出血部位11例。2例MSCT未发现出血灶及异常。其中MSCT明确出血11例中7例行DSA,5例显示出血灶,2例表现阴性。MSCT未见异常的2例DSA表现阴性。CT显示出血部位:十二指肠出血3例,空回肠出血6例,结肠出血2例,其中溃疡2例,肿瘤4例,炎症3例,血管畸形1例,憩室1例。结论:利用多层螺旋CT双期增强扫描能提高消化道出血性疾病诊断的准确性,具有重要的临床指导意义及诊断价值。
Objective：To explore the diagnostic value of multi-slice spiral CT（MSCT） in lower gastrointestinal hemorrhage.Methods：Thirteen patients with clinically suspected lower gastrointestinal hemorrhage were examined using MSCT.The patients were initially performed with 7.5mm slice thickness plain scans and then dual-phase enhanced scan using multi-modal reorganization such as multiplanar reconstruction（MPR） and maximum intensity projection（MIP）.Most cases were confirmed by surgery or follow-up visit.The other cases were confirmed by DSA.Results：In 13 clinically suspected cases of lower gastrointestinal hemorrhage,hemorrhagic lesions were detected in 11 cases [positive detection rate of MSCT in the diagnosis of lower gastrointestinal hemorrhge was 84.6%（11/13）].In these 11 cases,DSA were performed in 7 cases with a result of 5 positive and 2 negative.Positive detection rate of DSA was 71.4%（5/7）.In 2 cases with negative MSCT findings,DSA results were also negative.Sites of hemorrhage depicted by MSCT were as follows：duodenum（n=3）,jejunum and ileum（n=6）,colon（n=2）.The cause of the hemorrhage was ulcer in 2 cases,tumor in 4 cases,inflammation in 3 cases,vascular malformation in 1 case and diverticulitis in 1 case.Conclusion：MSCT with dual-phase enhanced scan and reconstruction techniques plays an important role in the diagnosis of lower gastrointestinal hemorrhage due to its potential in the improvement of diagnostic accuracy.
出处
《放射学实践》
北大核心
2011年第6期623-626,共4页
Radiologic Practice
