内镜下钛夹标记在早期食管癌放疗中的应用

Endoscopic labeling early esophageal cancer with titanium clips in radiotherapy

内镜下金属钛夹标记靶区上下界通过和早期食管癌CT定位扫描的联合应用,可以快速明确CT定位影像上食管癌大体肿瘤体积(GTV)长轴方向的边界坐标。内镜检查可真实反映食管癌病灶的范围,钛夹定位具有较高的可操作性、安全性和稳定性。在内镜引导下用金属钛夹标记靶区上下界为早期食管癌GTV勾画提供准确的靶区边界信息,并可改善GTV勾画精度、优化靶区照射剂量及提高放疗疗效。就内镜下金属钛夹标记靶区上下界的操作方法及安全性以及在早期食管癌放疗中的应用进展予以综述。

The upper and lower boundaries of early esophageal cancer marked by titanium clips under endoscopy can be used to quickly determine the coordinates of the long axis of the gross tumor volume(GTV)on CT location images.Endoscopic examination can accurately identify the extent of esophageal cancer focus,and labeling with titanium clip has high operability,safety and stability.Under the guidance of endoscopy,using titanium clip to mark the upper and lower boundaries of early esophageal cancer can provide accurate information and improve the accuracy of GTV delineation,optimize the target dose and improve the radiotherapy efficiency.This article reviews the operation method,safety and application of radiotherapy in early esophageal cancer.