{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T22:12:22Z","timestamp":1780524742689,"version":"3.54.1"},"reference-count":21,"publisher":"Public Library of Science (PLoS)","issue":"2","license":[{"start":{"date-parts":[[2024,2,9]],"date-time":"2024-02-09T00:00:00Z","timestamp":1707436800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>After 2010, the source model of the microSelectron HDR Afterloader System was slightly modified from the previous model. Granero et al. named the modified source model \u201cmHDR-v2r (revised model mHDR-v2)\u201d and the previous model \u201cmHDR-v2\u201d. They concluded that the dosimetric differences arising from the dimensional changes between the mHDR-v2 and mHDR-v2r designs were negligible at almost all locations (within 0.5% for <jats:italic>r<\/jats:italic> \u2265 0.25 cm), the two-dimensional anisotropy function difference between the two sources is found 2.1% at <jats:italic>r<\/jats:italic> = 1.0 cm when compared with the results of the other experimental group. To confirm this difference, we performed a full Monte Carlo simulation without energy-fluence approximation. This is useful near the radiation source where charged-particle equilibrium does not hold. The two-dimensional anisotropy function of the TG-43U1 dataset showed a few percent difference between the mHDR-v2r and mHDR-v2 sources. There was no agreement in the immediate vicinity of the source (0.10 cm and 0.25 cm), when compared to Granero et al. in mHDR-v2r sources. The differences in these two-dimensional anisotropy functions were identified.<\/jats:p>","DOI":"10.1371\/journal.pone.0298550","type":"journal-article","created":{"date-parts":[[2024,2,9]],"date-time":"2024-02-09T18:22:19Z","timestamp":1707502939000},"page":"e0298550","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":4,"title":["High dose rate 192Ir brachytherapy source model Monte Carlo dosimetry: mHDR-v2 and 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