The influence of lung correction on the target dose in radiation treatment of esophageal carcinoma
- VernacularTitle:肺密度校正对食管癌治疗靶区剂量的影响
- Author:
Gaofeng LI
;
Mingyuan LIU
;
Shaogang ZHANG
- Publication Type:Journal Article
- Keywords:
Esophageal carcinoma Lung correction Treatment planning
- From:
Chinese Journal of Radiation Oncology
1992;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Purpose: To evaluate the influence of lung corrections on the target volume dose in radiation treatment of esophageal carcinoma by TPS HEVAPLAN. Materials and Methods: Three radiation field technique to middle esophagus were used as the model of this investigation .target volume doses were calculated with photons in different energies to compare with the divergence when the lung density were set to 1.0(without lung correction) 0.33 and 0.2 (with lung correction).Results: If no lung correction was performed, the actual radiation dose in target volume were 24%～28%, 18%～21%, 13%～15% and 7%～9% which were radiated with 60 Co, X-ray of 5MV, 8MV and 19MV. Conclusion: The lung density must be corrected in treating 60 Co unit.
