A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Technical note : Simulation of lung counting applications using Geant4 (2023)
Jutila, H., Greenlees, P., Torvela, T., & Muikku, M. (2023). Technical note : Simulation of lung counting applications using Geant4. Physica Medica, 108, Article 102573. https://doi.org/10.1016/j.ejmp.2023.102573
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Jutila, Henri; Greenlees, Paul; Torvela, Tiina; Muikku, Maarit
Lehti tai sarja: Physica Medica
ISSN: 1120-1797
eISSN: 1724-191X
Julkaisuvuosi: 2023
Ilmestymispäivä: 30.03.2023
Volyymi: 108
Artikkelinumero: 102573
Kustantaja: Elsevier
Julkaisumaa: Italia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.ejmp.2023.102573
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/86257
Lisätietoja: Technical note.
Tiivistelmä
A Geant4 simulation package has been developed to investigate and test detector configurations for lung counting applications. The objective of this study was to measure radiation emitted from the human body and to make a qualitative comparison of the results of the simulation with an experiment. Experimental data were measured from a plastic phantom with a set of lungs containing 241Am activity. For comparison, simulations in which 241Am activity was uniformly distributed inside the lungs of the ICRP adult reference computational phantom were made. The attenuation of photons by the chest wall was simulated and from this photopeak efficiency and photon transmission were calculated as a function of photon energy. The transmission of 59.5 keV gamma rays, characteristic of the decay of 241Am, was determined from the computational phantom as a function of the angular position of the detector. It was found that the simulated detector response corresponds well with that from an experiment. The simulated count rate below 100 keV was 10.0(7) % greater compared to the experimental measurement. It was observed that 58.3(4) % of photons are attenuated for energies below 100 keV by the chest wall. In the simulation, the transmission of 59.5 keV gamma rays varied from 13.8(2) % to 38.0(4) % as a function of the angular position of the detector. The results obtained from the simulations show a satisfactory agreement with experimental data and the package can be used in the development of future body counting applications and enables optimization of the detection geometry.
YSO-asiasanat: säteilyannokset; radioaktiiviset aineet; keuhkot; mittausmenetelmät; gammasäteily; säteilyfysiikka; ilmaisimet; simulointi
Vapaat asiasanat: lung counting; voxel phantom; Geant4 simulation; low-energy gamma-ray spectra
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2023
JUFO-taso: 1
