食管癌3DCRT中CT与吞钡检测GTV-T长度差异的临床研究  

Study of CT Scan and Barium Meal Examination to Determine the Length of GTV-T in Esophageal Carcinoma Three-dimensional Conformal Radiotherapy

作　　者：罗辉[1] 张莉[1] 

机构地区：[1]江西省肿瘤医院,330029

出　　处：《实用癌症杂志》2012年第2期177-178,共2页The Practical Journal of Cancer

摘　　要：目的探讨食管癌3DCRT中CT与吞钡检测GTV-T长度差异的临床意义。方法 23例食管癌患者,按CT模拟定位体位,在模拟机下进行吞钡透视,确定病灶上下界,并用铅笔标记并固定于皮肤上行CT模拟定位扫描,传输图像至TPS计划系统。勾画GTV-T时,按食管壁厚度>5 mm来计算病变长度,并计算用铅点标记的食管病变长度。结果根据CT检查得出的GTV-T长度与吞钡检查结果相比较,有显著性差异(P<0.05)。结论勾画GTV-T时,不能简单按CT图像上食管壁厚度>5 mm来计算病灶长度,而应结合胃镜、吞钡检查、PET-CT及EUS结果。Objective To evaluate the clinical significance of GTV-T length differences detected by CT and barium meal within 3DCRT to esophageal carcinoma.Methods Located posture according to the CT simulation,23 patients with esophageal carcinoma swallowed barium and took a fluoroscopy;while the upper and lower bounds of lesions determined,which was marked and fixed on the skin,CT simulated location scanned and transmitted image to TPS planning system.Drawing the outline of GTV-T,lesions length should be measured as esophageal wall thickness 5 mm,and calculating esophageal lesions length marked by lead point.Results There was significant difference on GTV-T length between barium meal and CT examination（P 0.05）.Conclusion When outlining GTV-T,lesions length should not be measured simply according to the given esophageal wall thickness 5 mm on CT image but should combined with gastroscopy,barium meal examination,PET-CT and EUS results.

关 键 词：食管癌 三维适形放疗 病灶长度 

分 类 号：R735.1[医药卫生—肿瘤]