CT与钡剂造影精确确定非手术治疗食管癌放疗的GTV长度

CT scan and barium meal examination to determine the length of GTV-T in precise radiotherapy of non-surgical esophageal carcinoma

目的应用定位CT与食管X线钡剂造影结合的方法测量食管癌病变长度,为快速、准确勾画食管癌GTV长度提供依据。方法 60例初治食管鳞癌患者拟行根治性放射治疗,在模拟定位机下吞钡行X线钡剂造影,用铅珠标记,确认食管癌病变两端长度,在相同体位固定下CT扫描。采用One-Way ANOVA方差分析进行统计分析。结果食管癌病变长度从大到小依次为CT扫描长度、X线钡餐造影长度(铅珠标记)和内镜长度,三种检测方法分别为(8.82±2.40)cm、(7.03±1.74)cm和(6.27±1.68)cm,差异有统计学意义(P<0.05)。结论应用定位CT与X线钡剂造影结合的方法,参考内镜检查结果,在CT上能够快速确定食管癌GTV长度。

Objective To provide the proof for the fast , accurate delineation of esophageal carcinoma GTV length by measur-ing the GTV-T length differences detected by CT and barium meal .Methods 60 patients with esophageal squamous cell carcinoma undergoing radical radiation therapy , swallowed barium and took a fluoroscopy;while the upper and lower bounds of lesions determined , which were marked and fixed on the skin .The same posture was located according to the CT simulation .One-Way ANOVA analysis of variance was used for statistical analysis .Results The length of esophageal carcinoma from high to low in order for the CT scan length , X-ray and endoscope length,there was significant difference in GTV-T length among the three methods（P〈0.05）.Conclusions Re-ferring to esophagoscopic results , the GTV length of esophageal carcinoma can be quickly determined by CT and barium meal .