Evaluation of dose distribution of an intraoperative radiotherapy device using thermoluminescent dosimeters and radiographic films.
| Autor: | Baziar O; Department of Medical Physics, School Of Medicine, Mashhad University Of Medical Sciences, Mashhad, Iran., Gholamhosseinian H; Medical Physics Research Center, Mashhad University Of Medical Sciences, Mashhad, Iran., Aledavood SA; Cancer Research Center, Mashhad University Of Medical Sciences, Mashhad, Iran., Sadeghi M; Cancer Research Center, Mashhad University Of Medical Sciences, Mashhad, Iran. |
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| Jazyk: | angličtina |
| Zdroj: | Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology [Rep Pract Oncol Radiother] 2022 Jul 29; Vol. 27 (3), pp. 571-576. Date of Electronic Publication: 2022 Jul 29 (Print Publication: 2022). |
| DOI: | 10.5603/RPOR.a2022.0061 |
| Abstrakt: | Background: To investigate dose distribution of the 5cm spherical applicator of the INTRABEAM™ intraoperative radiation therapy (IORT) device via thermoluminescence dosimeters (TLDs) and Radiographic films. Independent dose distribution assessment of IORT devices is considered important. Several methods are described for this purpose, including TLDs and films. However, Radiographic films are not routinely used. Materials and Methods: Twenty TLDs were used for depth dose measuring and evaluating the isotropy in water. Additionally, the isotropy was assessed separately via Radiographic films in air by drawing isodose curves. Results: TLD measurements showed a steep dose decline which the relative average dose of 0.94 at the applicator surface reduced to 0.32, 0.13, and 0.07 at 1, 2, and 3 cm depths in water, respectively. Some remarkable isodose curves prepared using Radiographic films showed forward anisotropy of the 5 cm applicator. Conclusion: A very steep dose decline and approximately isotropic dose distribution of the 5 cm applicator were observed via TLD measurements. Radiographic films showed acceptable potential for drawing dose distribution maps. However, they should be applied in more various radiation setups to be implemented more confidently. Competing Interests: Conflict of interest The authors of this paper declare that they have no conflict of interest between them. (© 2022 Greater Poland Cancer Centre.) |
| Databáze: | MEDLINE |
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