MSCT增强扫描用于原发性实性小肠肿瘤诊断研究进展

Advances in the diagnosis of primary solid small bowel tumors by contrastenhanced multislice spiral CT

原发性小肠肿瘤是一类发病率较低的肿瘤,尤其大部分小肠肿瘤是实性成分为主,病变在多层螺旋CT(multislice spiral CT,MSCT)平扫上通常很难发现、且表现类似,彼此难以鉴别。本文描述小肠实性或实性成分为主的肿瘤的MSCT增强扫描技术和影像学特征,包括对比剂的类型和使用方法。在MSCT增强扫描检查方法中,CT小肠造影的优点是可以确定肠壁病变的真实范围、可能的透壁范围、肠系膜受累程度、远处转移、有助于发现和识别小肠肿瘤的供血血管、评估相应并发症;已经成为诊断、评估和分期小肠实性或实性成分为主肿瘤的最佳无创性成像技术。CT纹理分析(CT texture analysis,CTTA)作为新的研究热点,为原发性实性成分为主小肠肿瘤正确诊断提供了可能性。

Primary small bowel tumors have low incidence and contain predominantly solid components,and the lesions are similar and difficult to be detected and distinguished with multislice spiral CT(MSCT) plain scans.In this article we describe contrast-enhanced MSCT technique and imaging characteristics for solid small bowel tumors or small bowel tumors containing predominantly solid components,including the type and use of contrast agents.In contrast-enhanced MSCT,small bowel imaging with CT has the advantages of determining the true extent of intestinal wall lesions,the possible extent of wall penetration,the degree of mesenteric involvement,and distant metastases,as well as easiness to detect and identify the blood supply vessels of small bowel tumors and assessment of the corresponding complications.Contrast-enhanced MSCT has become the best noninvasive imaging technique for the diagnosis,evaluation,and staging of solid small bowel tumors or small bowel tumors containing predominantly solid components.CT texture analysis(CTTA) is a new research hotspot and can be useful for the correct diagnosis of primary small bowel tumors containing predominantly solid components.