prikaz prve stranice dokumenta Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion
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Scientific paper - Original scientific paper
Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion
Journal of Applied Clinical Medical Physics, 24 (2023), 10; e14109. https://doi.org/10.1002/acm2.14109
Šegedin, Nikola; Hršak, Hrvoje; Babić, Sanja Dolanski; Jurković, Slaven

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Institutional repository: Repository of the University of Rijeka, Faculty of Medicine

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Šegedin, N., Hršak, H., Babić, S. D. & Jurković, S. (2023). Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion. Journal of Applied Clinical Medical Physics, 24. (10). doi: 10.1002/acm2.14109

Šegedin, Nikola, et al. "Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion." Journal of Applied Clinical Medical Physics, vol. 24, no. 10, 2023. https://doi.org/10.1002/acm2.14109

Šegedin, Nikola, Hrvoje Hršak, Sanja Dolanski Babić and Slaven Jurković. "Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion." Journal of Applied Clinical Medical Physics 24, no. 10 (2023). https://doi.org/10.1002/acm2.14109

Šegedin, N., et al. (2023) 'Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion', Journal of Applied Clinical Medical Physics, 24(10). doi: 10.1002/acm2.14109

Šegedin N, Hršak H, Babić SD, Jurković S. Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion. Journal of Applied Clinical Medical Physics [Internet]. 2023 August 25 [cited 2025 March 28];24(10). doi: 10.1002/acm2.14109

N. Šegedin, H. Hršak, S. D. Babić and S. Jurković, "Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion", Journal of Applied Clinical Medical Physics, vol. 24, no. 10, August 2023. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:184:200565. [Accessed: 28 March 2025]

Metadata
Title (english)Determination of volume averaging correction factors using an elliptical absorbed dose model for Gamma Knife Perfexion
AuthorNikola Šegedin
AuthorHrvoje Hršak
AuthorSanja Dolanski Babić
AuthorSlaven Jurković
Author's institutionUniversity of Rijeka
Faculty of Medicine
(Department of Medical Physics and Biophysics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Biophysics and Medical Physics
Abstract (english)
Purpose: The purpose of this study is to calculate volume averaging correction factors for detectors used in the dosimetry of Gamma Knife's narrow photon beams, and to determine the impact of volume averaging on the field output correction factor. Methods: Simulations of different Gamma Knife fields were done using elliptical dose model formalism with newly introduced fit functions. To determine volume averaging correction factors a calculation of the absorbed dose over the volume of the... More detector was performed. The elliptical dose model was tested with respect to absorbed dose distribution for different volumes and compared with the calculations of Leksell GammaPlan v.11.3.1. Results: The largest differences in absorbed dose calculated by the elliptical model and Leksell GammaPlan are 2.25%, 1.5%, and 0.6% for 16, 8, and 4 mm field sizes, respectively. Volume averaging correction factors were determined for six ionization chambers, five semiconductor detectors, a diamond, and two plastic scintillator detectors. In general, for all examined detectors the impact of volume averaging is more pronounced for smaller field sizes. All studied ionization chambers had a larger volume than other detectors, therefore the volume averaging correction factors for ionization chambers are larger for all investigated field sizes. Besides the fact that plastic scintillator detectors can be considered tissue-equivalent, volume averaging correction factor should be applied. Conclusion: Volume averaging correction factors for different detectors are determined and suitable detectors for dosimetry of Gamma Knife's narrow photon beams are recommended. It is shown that volume averaging has a dominant contribution to a field output correction factor. Less
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleJournal of Applied Clinical Medical Physics
Numberingvol. 24, no. 10, e14109
p-ISSN1526-9914
e-ISSN1526-9914
DOIhttps://doi.org/10.1002/acm2.14109
URN:NBNurn:nbn:hr:184:200565
Publication2023-08-25
Document URLhttps://aapm.onlinelibrary.wiley.com/doi/10.1002/acm2.14109
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) icon
Created on2023-11-13 11:24:22
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