TY - JOUR ID - 9933 TI - Assessment of the effects of radiation type and energy on the calibration of TLD-100 JO - Iranian Journal of Medical Physics JA - IJMP LA - en SN - AU - Bahreyni Toossi, Mohammad Taghi AU - Gholamhosseinian, Hamid AU - Vejdani Noghreiyan, Atefeh AD - Medical Physics Department, Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. AD - Medical Physics Research Centre, Mashhad University of Medical Sciences, Mashhad, Iran AD - Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran - Department of Medical Physics, Faculty of Medicine, University of Medical Sciences, Mashhad, Iran Y1 - 2018 PY - 2018 VL - 15 IS - 3 SP - 140 EP - 145 KW - Calibration KW - Dosimetry KW - energy KW - Irradiation KW - TLD DO - 10.22038/ijmp.2017.26744.1275 N2 - Introduction: In radiation therapy, knowing the dose rates to healthy organs and tumors is beneficial, and thermoluminescent dosimeter (TLD) allows for this possibility. This study was aimed at determining the dose-response differences of TLDs in various types of radiation, energy levels, and dose rate calibrated with other types of radiation beams and energy and dose levels. Materials and Methods: In this study, LiF:Mg,Ti (TLD-100) was used for dosimetry. Photon and electron irradiation was performed by Elekta Precise Linear Accelerator. First, TLDs were calibrated in three different groups of 6 MV photon, 6 MeV electron, and 60Co teletherapy photon beam with 50 cGy dose. Next, each group was irradiated with 6 MV photon, 6 MeV electron, and 60Co teletherapy photon beam separately at three different dose levels of 20, 60, and 100 cGy. Results: TLDs calibrated with electron were significantly different at all dose levels and with all types of radiation from TLDs calibrated with photon or 60Co teletherapy photon beam (P=0.000). P-value of the TLDs calibrated with 6 MV photon versus 60Co was less than 0.94. The maximum standard deviation belonged to 100 cGy irradiation, while the least pertained to 20 cGy irradiation. Conclusion: Calibration of TLDs depends on the type of radiation. UR - https://ijmp.mums.ac.ir/article_9933.html L1 - https://ijmp.mums.ac.ir/article_9933_c943ed65da6aac2c1fa695dfb900a729.pdf ER -