On the use of EBT3 film for relative dosimetry of kilovoltage X ray beams

Prentou, Eleni; Lekatou, A.; Pantelis, E.; Karaiskos, P.; Papagiannis, Panagiotis

doi:10.1016/j.ejmp.2020.04.025

Cited by 2 publications

References 36 publications

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Monte Carlo calculated absorbed‐dose energy dependence of EBT3 and EBT4 films for 5–200 MeV electrons and 100 keV–15 MeV photons

Clements,

Bazalova‐Carter

2024

J Applied Clin Med Phys

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PurposeTo use Monte Carlo simulations to study the absorbed‐dose energy dependence of GAFChromic EBT3 and EBT4 films for 5–200 MeV electron beams and 100 keV–15 MeV photon beams considering two film compositions: a previous EBT3 composition (Bekerat et al.) and the final composition of EBT3/current composition of EBT4 (Palmer et al.).MethodsA water phantom was simulated with films at 5–50 mm depth in 5 mm intervals. The water phantom was irradiated with flat, monoenergetic 5–200 MeV electron beams and 100 and 150 keV kilovoltage and 1–15 MeV megavoltage photon beams and the dose to the active layer of the films was scored. Simulations were rerun with the films defined as water to compare the absorbed‐dose response of film to water, .ResultsFor electrons, the Bekerat et al. composition had variations in of up to from 5 to 200 MeV. Similarly, the Palmer et al. composition had differences in up to from 5 to 200 MeV. For photons, varied up to and from 100 keV to 15 MeV for the Bekerat et al. and Palmer et al. compositions, respectively. The depth of films did not appear to significantly affect for photons at any energy and for electrons at energies 50 MeV. However, for 5 and 10 MeV electrons, decreases of up to in were seen due to stacked films and increased beam attenuation in films compared to water.ConclusionsThe up to and variations in for electrons and photons, respectively, across the energies considered in this study indicate the importance of calibrating films with the energy intended for measurement. Additionally, this work emphasizes potential issues with stacking films to measure depth dose curves, particularly for electron beams with energies 10 MeV.

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Monte Carlo calculated absorbed‐dose energy dependence of EBT3 and EBT4 films for 5–200 MeV electrons and 100 keV–15 MeV photons

Clements,

Bazalova‐Carter

2024

J Applied Clin Med Phys

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Absorbed Dose Determination in External Beam Radiotherapy

2024

Technical Reports Series

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This revised edition of the IAEA TRS-398 Code of Practice fulfils the need for a systematic and internationally unified approach to the calibration of ionization chambers in terms of absorbed dose to water and to the use of these detectors in determining the absorbed dose to water for the radiation beams used in radiotherapy. It is based on new key data for radiation dosimetry published by the International Commission on Radiation Units and Measurements (ICRU). It contains updated information on new commercially available ionization chambers and addresses the needs of professionals working with newer radiotherapy technologies.

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On the use of EBT3 film for relative dosimetry of kilovoltage X ray beams

Cited by 2 publications

References 36 publications

Monte Carlo calculated absorbed‐dose energy dependence of EBT3 and EBT4 films for 5–200 MeV electrons and 100 keV–15 MeV photons

Monte Carlo calculated absorbed‐dose energy dependence of EBT3 and EBT4 films for 5–200 MeV electrons and 100 keV–15 MeV photons

Absorbed Dose Determination in External Beam Radiotherapy

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