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@ARTICLE{Theodoridou:307447,
author = {E. Theodoridou$^*$ and R. Dong$^*$ and C. King$^*$ and G.
Poludniowski and P. Häring$^*$ and E. Hain$^*$ and C.
Litou$^*$ and E. Voutou$^*$ and P. Foka and N. Sammut and J.
Seco$^*$ and M. F. Spadea},
title = {{M}onte {C}arlo simulation of a cabinet kilovoltage {X}-ray
irradiator.},
journal = {Physica medica},
volume = {141},
issn = {1120-1797},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {DKFZ-2025-03046},
pages = {105708},
year = {2026},
note = {#EA:E041#LA:E041# / Volume 141, January 2026, 105708 /
Available online 22 December 2025},
abstract = {We present a rigorously defined dosimetric Monte Carlo (MC)
model of the MultiRad225 kilovoltage X-ray irradiator, which
is validated using experimental techniques. Previous MC
studies performed with the MultiRad225 lacked rigorous
dosimetric validation.Experimental measurements are
conducted with an ionization chamber and radiochromic film
with beam energies of 119, 160, and 200 kV. MC simulations
are conducted mimicking each experiment. Both beam quality
(half-value layer, HVL) and quantity (dose rate) are
assessed with these methods.MC simulated dose rates and HVL
values show close agreement with experimental results across
varying source-to-surface distances (SSD) for each beam
energy with most dose rate simulations falling within $5\%$
of the experimentally measured values.This work provides a
validated MC model as a foundation for future studies with
the MultiRad225. The MC model utilizes a comprehensive
geometry which accurately captures relevant physical
phenomena.},
keywords = {Dosimetry (Other) / Half-value layer (HVL) (Other) /
Kilovoltage X-ray irradiator (Other) / Monte Carlo
simulation (Other)},
cin = {E041},
ddc = {610},
cid = {I:(DE-He78)E041-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41435552},
doi = {10.1016/j.ejmp.2025.105708},
url = {https://inrepo02.dkfz.de/record/307447},
}