[Verification of Dose Distribution in Cervical Cancer Brachytherapy Using Metal and Plastic Applicators].

Autor:	Tomita F; Graduate School of Health Sciences, Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences.; Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences., Fuse H; Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences., Fujisaki T; Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences., Yasue K; Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences., Miyakawa S; Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences., Ikoma H; Department of Radiation Technology, Ibaraki Prefectural Central Hospital., Yoshizawa T; Department of Radiology, Tsuchiura Kyodo General Hospital., Oyama K; Department of Radiology, Tsuchiura Kyodo General Hospital., Oyama S; Department of Radiology, Tsuchiura Kyodo General Hospital., Okumura T; Department of Radiation Oncology, Ibaraki Prefectural Central Hospital., Tamaki Y; Department of Radiation Oncology, Fukushima Rosai Hospital.
Jazyk:	japonština
Zdroj:	Nihon Hoshasen Gijutsu Gakkai zasshi [Nihon Hoshasen Gijutsu Gakkai Zasshi] 2023 Jul 20; Vol. 79 (7), pp. 682-692. Date of Electronic Publication: 2023 Jun 14.
DOI:	10.6009/jjrt.2023-1375
Abstrakt:	Purpose: To validate the point-A dose and dose distribution of metal and resin applicators in comparison with those of TG-43U1. Methods: The metal and resin applicators consisting of tandem and ovoid were modeled by the egs_brachy. The doses to point A and dose distributions considering each applicator were calculated and compared to those of TG-43U1. Results: The dose to point A considering the metal applicator was 3.2% lower than that of TG-43U1, but there was no difference in the dose to point A considering the resin applicator. The dose distribution considering the metal applicator was lower than that of TG-43U1 at all calculation points, but there was no difference in the dose distribution considering the resin applicator at almost all calculation points. Conclusion: In this study, the dose distribution considering the metal applicator was lower than that of TG-43U1 at all calculation points, but there was no difference in the dose distribution considering the resin applicator at almost all calculation points. Therefore, TG-43U1 can accurately calculate the dose distribution when changing from the metal applicator to the resin applicator.
Databáze:	MEDLINE
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