摘要
目的探讨采用常规MRI结合扩散加权成像(DWI)对腹膜转移瘤的诊断价值。方法对35例腹膜转移瘤进行常规MRI扫描和常规MRI结合DWI扫描,由两名高级职称影像医生在均不知道病理学结果的情况下对腹部常规MRI图像及结合DWI图像进行诊断,判断患者是否为腹膜转移瘤;并依次对膈下、道格拉斯窝、右结肠旁沟、左结肠旁沟、网膜及系膜进行重点观察,记录是否有病灶显示。结果所有腹膜转移瘤均经病理学证实,常规MRI、常规MRI结合DWI图像对腹膜转移瘤的诊断准确率和假阳性率分别为71.4%与91.4%、20%与5.7%,对比有统计学意义(P<0.05)。结论常规MRI结合DWI可以有效提高腹膜转移的诊断准确率,降低假阳性率,并可提高转移灶的检测率。
Objective To explore the accuracy of conventional MRI combined with DWI in the diagnosis of peritoneal metastases. Methods 35 cases of peritoneal metastases underwent routine MRI scan and the conventional MRI combined with DWI scan. Two senior doctors, who were blind to the pathological results, evaluated the obtained imaging data to de termine whether or not the patients occurred the peritoneal metastases. And then, the sites, in order of subdiaphragmatic region, Douglas fossa, right paracolic sulci, left paracolic sulci, omentum and mesentery, were mainly observed and recor ded whether the lesions appeared. Results 35 cases of peritoneal metastases were all confirmed by pathology. The accura cy and false positive rates by means of the conventional MRI, and the conventional MRI combined with DWI image for the diagnosis of peritoneal metastases were 71.40/00 versus 91.4%, and 20% versus 5.7%, respectively. There was a statisti cal significance （ P d0.05）. The conventional MRI combined with DWI can markedly increase the rate for displaying the lesions in the diaphragm, Douglas fossa, right paracolic sulci, left paracolic sulci, omentum and mesentery. Conclusion Conventional MRI combined with DWI can improve the diagnostic accuracy of peritoneal metastases, reduce the false posi tive rate, and improve the rate for the detection of peritoneal metastases.
出处
《医学影像学杂志》
2014年第1期73-75,82,共4页
Journal of Medical Imaging
关键词
腹膜转移瘤
扩散加权成像
磁共振成像
Peritoneal metastasis
Diffusion weighted imaging
Magnetic resonance imaging
