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Elementary properties of thermoluminescent dosimeter in dosimetry for tumor radiotherapy / 中华放射肿瘤学杂志
Article in Zh | WPRIM | ID: wpr-493039
Responsible library: WPRO
ABSTRACT
Objective To explore the elementary properties of LiF (Mg,Cu,and P) thermoluminescent dosimeter (TLD) in dosimetry for tumor radiotherapy,and to provide a reliable basis for thermoluminescent dosimetry in clinical radiotherapy.Methods 60Coγ-ray and 6 MV X-ray were used for evaluation of the dispersion,repeatability,and dose response of LiF TLD.To meet the requirement of clinical radiotherapy,the effects of energy,dose (50-600 cGy),radiation dose rate (50-600 MU/min),and the angle of incidence for accelerator gantry (0°-± 90°) on TLD were determined and the respective correction factors were calculated.Results The errors of repeatability and dispersion of TLD were less than ±3%.There was a linear relationship between readout and irradiation dose within a certain range of irradiation dose.The minimal relative deviation of 0.3% was obtained when 6 MV X-ray was used with a dose rate of 300 MU/min and an angle of incidence of 0°.Conclusions LiF TLD shows excellent repeatability,low dispersion,high stability,and strong linear correlation.It meets the international criteria and can be used for dose measurement in tumor radiotherapy.
Key words
Full text: 1 Database: WPRIM Language: Zh Journal: Chinese Journal of Radiation Oncology Year: 2016 Document type: Article
Full text: 1 Database: WPRIM Language: Zh Journal: Chinese Journal of Radiation Oncology Year: 2016 Document type: Article