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目的：探索在术前 ＣＴ检查食管瘤时 ＣＴ值曲线图的应用，以及食管腔造影剂的使用，这有助于帮助判别食管壁的厚度以及外侵情况。材料与方法：１００例经过病理学诊断的食管癌病人行ＣＴ检查及分析，把他们随机分成３组以观察不同造影剂的应用显示情况；此１００例病人中，有６５例行了食管癌开胸手术。在ＣＴ值曲线图辅助下使用“三角法”判别主动脉受侵。结果：三种不同的方法显示食管腔都是有价值的，显示满意率分别为８０．００％、８７．８０％以及８２．７６％（Ｐ＞０．０５），显示满意的标准为：①伪影较少；②食管狭窄处的中心可以明确显示。缺乏其中任一项为显示不佳。使用ＣＴ值曲线图、“三角法”判别主动脉受侵的敏感性，特异性及准确性分别为 ８７． ５０％、 ７７． ５６％、 ８０． ００％。结论：食管腔内造影剂的使用对测量管壁厚度是有价值的；ＣＴ值曲线图亦有助于判别主动脉受侵情况。
OBJECTIVES: To explore the application of CT values in the preoperative CT examination of esophageal tumors and the use of esophageal contrast media to help determine the thickness of the esophageal wall and the extent of the invasion. Materials and Methods: One hundred patients with esophageal cancer diagnosed by pathology underwent CT examination and analysis. They were randomly divided into three groups to observe the application of different contrast agents. Of the 100 patients, 65 had esophageal cancer Thoracic surgery. In the CT curve with the help of “triangular method” to determine the aortic invasion. Results: Three different methods showed that the esophageal lumen was valuable, showing satisfactory rates of 80.00%, 87.80%, and 82.76%, respectively (P> 0.05), indicating satisfactory criteria were: ① artifacts less; ② Esophageal stenosis at the center can be clearly shown. Lack of any one for poor display. Using the CT value graph, the sensitivity, specificity, and accuracy of the trigonometry method for identifying aortic involvement were 87%. 50%, 77. 56%, 80. 00%. CONCLUSIONS: The use of intra-esophageal contrast media is valuable for measuring wall thickness; CT-value plots can also help determine aortic involvement.