ROC曲线评价超声、MSCT对胃肠道癌肝转移灶的检出价值  

Evaluation on the detection of liver metastases from colorectal cancer with US and MSCT:ROC curve analysis

作　　者：诸一吕[1] 祝跃明[1] 沈健[1] 杨君[1] 

机构地区：[1]浙江省湖州市中心医院放射科,浙江湖州313000

出　　处：《中国现代医生》2012年第36期105-106,114,共3页China Modern Doctor

基　　金：浙江省湖州市科技局基金资助项目(2010YS10)

摘　　要：目的比较多层螺旋CT动态增强扫描(Multi-slice CT,MSCT)与超声对直结肠癌肝脏转移灶的检出率,评价MSCT对肝转移的早期诊断价值。方法 45例直结肠癌术后患者,分别行MSCT动态增强扫描和肝脏超声检查,采用受试者工作特征曲线(receive operating characteristic curve,ROC)分析结果。结果 MSCT诊断方法的曲线下面积(Az)、灵敏度、特异度和阳性预测值分别为0.938、96.9%、89.5%和95.1%,超声诊断方法则分别为0.821、89.8%、62.3%和85.2%,两组比较有统计学意义(P<0.05)。结论对于直结肠癌肝转移灶的早期检出及阳性预测,MSCT扫描相对超声更具优势。Objective To compare the detect rate of US and dynamic contrast-enhanced spiral CT scan （Multi-slice CT, MSCT） in the detection of liver metastases from colorectal cancer,evaluate the early diagnosis of MSCT for liver metastases. Methods A total of 45 cases of colorectal cancer patients after surgery, were treated by US liver scan and dynamic contrast-enhanced MSCT scan, using ROC curve to analysis of scan results. Results Of diagnostic methods MSCT area under the curve （Az）, sensitivity, specificity and positive predictive values were 0.938,96.9% ,89.5% and 95.1%, US diagnosis were 0.821,89.8%,62.3% and 85.2%, two sets of results had statistically significant difference （P 〈 0.05）. Conclusion For colorectal cancer early detection of liver metastases and positive predictive, MSCT scans advantages.

关 键 词：超声 体层摄影 肿瘤转移 肝 

分 类 号：R735[医药卫生—肿瘤]