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Cancer Research and Clinic ; (6): 38-40, 2013.
Article in Chinese | WPRIM | ID: wpr-431453

ABSTRACT

Objective A comparative study of clinical factors and dose-volume histogram (DVH)parameters on the impact of radiation pneumonitis occurred in the three-dimensional conformal radiotherapy of lung cancer (lung target)and mediastinal tumors and esophageal (mediastinal target).Methods Review 83cases lung cancer,mediastinal tumors and esophageal patients,and analyzed with chi-square tests on the correlation of the clinical factors (gender,age,tumor location,stage,chemotherapy) with radiation pneumonitis;have relevance analysis between the DVH parameters of two targets and radiation pneumonitis; lung target and mediastinal target volume DVH parameters compared to the t-test.Results ≥2 radiation pneumonitis was 36.5 %.≥2 radiation pneumonitis occurred in various clinical factors had no significant effect.DVH parameters of the two targets,V5,V10,V20,V30,whole lung dose (MLD) were significantly related to RP.Two targets of RP patients V5 [(50.9±17.8) %,(69.9±20.4) %],V10 [(38.6±15.2) %,(53.5±18.8) %] were statistically significant by t-test (t =2.434,P < 0.05),while V20 (t =0.388,P > 0.05),V30 (t =0.005,P > 0.05) and MLD (t =0.138,P >0.05) were no significant difference (P > 0.05),so the same results with the two targets of patients without RP obtained.Conclusion In the lung target and mediastinal target of radiotherapy radiation pneumonitis is related with DVH parameters,especially V20,V30 and MLD impact on the occurrence of RP.

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