TY  - JOUR
AU  - Gimenez-Alventosa, V.
AU  - Gimenez, V.
AU  - Ballester, F.
AU  - Vijande, J.
AU  - Andreo, P.
PY  - 2020
DA  - 2020//
TI  - Monte Carlo calculation of beam quality correction factors for PTW cylindrical ionization chambers in photon beams
T2  - Phys. Med. Biol.
JO  - Physics in Medicine and Biology
SP  - 205005 - 11pp
VL  - 65
IS  - 20
PB  - Iop Publishing Ltd
KW  - TRS 398
KW  - Monte Carlo
KW  - dosimetry
KW  - ionization chambers
KW  - MV photon beams
AB  - The beam quality correction factork(Q)for megavoltage photon beams has been calculated for eight PTW (Freiburg, Germany) ionization chambers (Farmer chambers PTW30010, PTW30011, PTW30012, and PTW30013, Semiflex 3D chambers PTW31021, PTW31010, and PTW31013, and the PinPoint 3D chamber PTW31016). Simulations performed on the widely used NE-2571 ionization chamber have been used to benchmark the results. The Monte Carlo code PENELOPE/penEasy was used to calculate the absorbed dose to a point in water and the absorbed dose to the active air volume of the chambers for photon beams in the range 4 to 24 MV. Of the nine ionization chambers analysed, only five are included in the current version of the International Code of Practice for dosimetry based on standards of absorbed dose to water (IAEA TRS 398). The values reported in this work agree with those in the literature within the uncertainty estimates and are to be included in the average values of the data obtained by different working groups for the forthcoming update of TRS 398.
SN  - 0031-9155
UR  - https://doi.org/10.1088/1361-6560/ab9501
DO  - 10.1088/1361-6560/ab9501
LA  - English
N1  - WOS:000576070000001
ID  - Gimenez-Alventosa_etal2020
ER  -