Effect of labeling esophageal carcinoma with sliver clips by esophagoscopy in mapping the target for radiotherapy
10.3760/cma.j.issn.0254-1432.2011.04.003
- VernacularTitle:食管镜下银夹标记在确定食管癌放射治疗靶区勾画中作用的研究
- Author:
Yongchun ZHANG
;
Huiling GUO
;
Lihong DONG
;
Wei ZHANG
;
Lu YUE
- Publication Type:Journal Article
- Keywords:
Esophageal neoplasms;
Tomography,X-ray computed;
Radiotherapy planning,computer-assisted
- From:
Chinese Journal of Digestion
2011;31(4):226-230
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of labeling esophageal carcinoma with sliver clips on two sides by esophagoscopy in mapping the target for conformal radiotherapy (CRT). Methods Eighty patients with esophageal carcinoma (28 patients in early stage, 52 patients in late stage), who were eligible for CRT, were collected and the tumor volume was detected by three methods: CT (A),CT combined with X-ray (B) and CT combined with sliver clip labeling by esophagoscopy (C). The differences of the tumor length and position in head-foot site (Y-axsis) among three methods were compared. Results The comparison of average length of tumor in early stage patients showed significant difference among three methods in all types of tumor (F= 4.07 ～ 7.43, P＜0.05 ) except papillary type (F= 1. 71, P＞0. 05). There was difference (ranged from 0. 5 cm to 2. 0 cm) in detection of position in head-foot site between A and B methods and C method. Significant difference was found in determining the displacement on head-foot site among three methods (F = 34. 36 ～193.50,P ＜0.01). The comparison of average length of tumor in middle or terminal stage patients showed significant difference among three methods in all types of tumor (F=4. 07～30.10 ,P＜0.05) except mushroom type (F = 2.44, P＞ 0. 05). Significant difference was found in determining the displacement on head-foot site among three methods (F= 12.00 ～ 21.16, P ＜ 0. 01 ). Conclusion These findings indicate that C method is more sensitive and correct in mapping the target for CRT in comparison with other two methods.
