【摘要】 目的　探讨螺旋CT多平面重建 (MPR)和仿真内镜技术 (CTVE)对食管癌的临床应用价值。材料与方法　 2 0例食管癌患者均行螺旋CT增强扫描后MPR和CTVE成像。结果　 ( 1) 2 0例食管癌患者行螺旋CT增强扫描可以观察病变大小、部位、形态、范围、有无局部外侵及淋巴结的转移情况。( 2 )MPR可进行冠状、矢状及横断面的二维重建 ,还可以沿食管走行进行曲面MPR ,在不同方位以最佳角度对食管肿瘤进行观察。( 2 ) 2 0例食管癌CTVE可获得类似纤维食管胃镜显示管腔壁和腔内病变形态的结果 ,且能从梗阻的远端观察病变情况。( 4 )MPR和CTVE对判断肿瘤外周浸润、大体类型及分期的准确率分别为 80 %、65 %、75 %和 60 %、85 %、5 5 %。结论　MPR和CTVE的应用为食管癌的术前分期诊断提供了更全面的信息 ,MPR对显示病变周围侵犯的范围比较准确 ,CTVE对病变的大体类型显示较好。更多还原

【Abstract】 Objective To evaluate multiplanar reformation (MPR) and virtual endoscopy (VE) with spiral CT in the diagnosis of esophageal neoplasm.Materials and Methods Enhanced spiral CT scanning and image processing with MPR and CTVE technique were performed in 20 cases with esophageal cancer.Results (1) On CT, the position, size and shape of the esophageal cancer, as well as its local extension and relationship to the adjacent structures, including lymphatic metastases, were clearly demonstrated in all patients. (2) MPR could well display the morphologic features of esophageal cancer in any arbitrary spatial angle and direction. (3) The inner wall of the esophagus and intracavitary lesion could be well observed with CTVE, with the results as satisfactory as with endoscopy. (4) The accuracy in judging tumor extension, gross pattern and TNM staging was 80%, 65% and 75% for MPR, 60%, 85% and 55% for CTVE, respectively. Conclusion MPR and CTVE can provide important information which is very helpful for clinicians to make preoperative staging of the esophageal cancer.更多还原