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Quality factors.
Kerr GD. Kerr GD. Health Phys. 1988 Aug;55(2):241-9. doi: 10.1097/00004032-198808000-00016. Health Phys. 1988. PMID: 3410691
The quality factor, Q, is a dimensionless modifier used in converting absorbed dose, expressed in gray (or rad), to dose equivalent, expressed in sievert (or rem). The dose equivalent is used in radiation protection to account for the biological effectiven …
The quality factor, Q, is a dimensionless modifier used in converting absorbed dose, expressed in gray (or rad), to dose equiv …
Space radiation quality factor for Galactic Cosmic Rays and typical space mission scenarios using a microdosimetric approach.
Papadopoulos A, Kyriakou I, Incerti S, Santin G, Nieminen P, Daglis IA, Li W, Emfietzoglou D. Papadopoulos A, et al. Radiat Environ Biophys. 2023 May;62(2):221-234. doi: 10.1007/s00411-023-01023-6. Epub 2023 Apr 16. Radiat Environ Biophys. 2023. PMID: 37062024 Free PMC article.
Space radiation exposure from omnipresent Galactic Cosmic Rays (GCRs) in interplanetary space poses a serious carcinogenic risk to astronauts due to the-limited or absent-protective effect of the Earth's magnetosphere and, in particular, the terrestrial atmosphere. The radiation …
Space radiation exposure from omnipresent Galactic Cosmic Rays (GCRs) in interplanetary space poses a serious carcinogenic risk to astronaut …
Enhanced Dosimetric Accuracy Using Quality Factor Compensation Method for In Vivo Electron Paramagnetic Resonance Tooth Dosimetry.
Choi K, Koo CU, Oh J, Kim J, Park JI, Kim SH, Lee JH, Kang DG, Ye SJ. Choi K, et al. Health Phys. 2023 Nov 1;125(5):352-361. doi: 10.1097/HP.0000000000001727. Epub 2023 Aug 10. Health Phys. 2023. PMID: 37565831
We aim to develop a dose assessment method compensating for quality factors (Q factor) observed during in vivo EPR tooth dosimetry. ...The assessed doses of the unirradiated volunteers were 0.53, 0.50, and - 0.22 Gy. We demonstrated that the suggested Q factor …
We aim to develop a dose assessment method compensating for quality factors (Q factor) observed during in vivo EPR tooth dosim …
Computational models and tools.
Schuemann J, Bassler N, Inaniwa T. Schuemann J, et al. Med Phys. 2018 Nov;45(11):e1073-e1085. doi: 10.1002/mp.12521. Med Phys. 2018. PMID: 30421814 Review.
We discuss the difference between the prescribed physical dose and the biologically effective dose, the relative biological effectiveness (RBE) between ions and photons and the dependence of RBE on the linear energy transfer (LET). ...
We discuss the difference between the prescribed physical dose and the biologically effective dose, the relative biological …
High-Accuracy Relative Biological Effectiveness Values Following Low-Dose Thermal Neutron Exposures Support Bimodal Quality Factor Response with Neutron Energy.
Paterson LC, Festarini A, Stuart M, Ali F, Costello C, Boyer C, Rogge R, Ybarra N, Kildea J, Richardson RB. Paterson LC, et al. Int J Mol Sci. 2022 Jan 14;23(2):878. doi: 10.3390/ijms23020878. Int J Mol Sci. 2022. PMID: 35055062 Free PMC article.
We examined the relative biological effectiveness (RBE) of DNA damage generated by thermal neutrons compared to gamma radiation. ...Consequently, thermal neutron RBE is approximately four times higher than the current ICRP radiation weighting factor va …
We examined the relative biological effectiveness (RBE) of DNA damage generated by thermal neutrons compared to gamma r …
Considerations on a revision of the quality factor.
Kellerer AM, Hahn K. Kellerer AM, et al. Radiat Res. 1988 Jun;114(3):480-8. Radiat Res. 1988. PMID: 3375437 Free article.
A modified analytical expression is proposed for the revised quality factor that has been suggested by a liaison group of ICRP and ICRU. ...The choice between the reference parameters LET or y is therefore a secondary problem in an impending revision of the quali …
A modified analytical expression is proposed for the revised quality factor that has been suggested by a liaison group of ICRP …
Clinical Indications for Carbon Ion Radiotherapy.
Mohamad O, Yamada S, Durante M. Mohamad O, et al. Clin Oncol (R Coll Radiol). 2018 May;30(5):317-329. doi: 10.1016/j.clon.2018.01.006. Clin Oncol (R Coll Radiol). 2018. PMID: 29402598 Review.
Compared with photon and proton therapy, carbon ion radiotherapy (CIRT) offers potentially superior dose distributions, which may permit dose escalation with the potential for improved sparing of adjacent normal tissues. CIRT has increased biological effectiveness l …
Compared with photon and proton therapy, carbon ion radiotherapy (CIRT) offers potentially superior dose distributions, which may permit dos …
Current best estimates of beam quality correction factors for reference dosimetry of clinical proton beams.
Palmans H, Lourenço A, Medin J, Vatnitsky S, Andreo P. Palmans H, et al. Phys Med Biol. 2022 Sep 29;67(19). doi: 10.1088/1361-6560/ac9172. Phys Med Biol. 2022. PMID: 36096096
Objective. To review the currently available data on beam quality correction factors,kQ,for ionization chambers in clinical proton beams and derive their current best estimates for the updated recommendations of the IAEA TRS-398 Code of Practice.Approach. ...From all the d …
Objective. To review the currently available data on beam quality correction factors,kQ,for ionization chambers in clinical proton be …
Monte Carlo calculated beam quality correction factors for two cylindrical ionization chambers in photon beams.
Alissa M, Zink K, Tessier F, Schoenfeld AA, Czarnecki D. Alissa M, et al. Phys Med. 2022 Feb;94:17-23. doi: 10.1016/j.ejmp.2021.12.012. Epub 2021 Dec 28. Phys Med. 2022. PMID: 34972070 Free article.
PURPOSE: Although several studies provide data for reference dosimetry, the SNC600c and SNC125c ionization chambers (Sun Nuclear Corporation, Melbourne, FL) are in clinical use worldwide for which no beam quality correction factors k(Q) are available. The goal of this stud …
PURPOSE: Although several studies provide data for reference dosimetry, the SNC600c and SNC125c ionization chambers (Sun Nuclear Corporation …
Elements of microdosimetry.
Rossi HH, Zaider M. Rossi HH, et al. Med Phys. 1991 Nov-Dec;18(6):1085-92. doi: 10.1118/1.596616. Med Phys. 1991. PMID: 1753890 Review.
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