Ionization chamber correction factors for MR-linacs

S Pojtinger, OS Dohm, RP Kapsch… - Physics in Medicine & …, 2018 - iopscience.iop.org
Previously, readings of air-filled ionization chambers have been described as being
influenced by magnetic fields. To use these chambers for dosimetry in magnetic resonance …

Monte Carlo calculation of beam quality correction factors in proton beams using detailed simulation of ionization chambers

C Gomà, P Andreo, J Sempau - Physics in Medicine & Biology, 2016 - iopscience.iop.org
This work calculates beam quality correction factors (k Q) in monoenergetic proton beams
using detailed Monte Carlo simulation of ionization chambers. It uses the Monte Carlo code …

TOPAS/Geant4 configuration for ionization chamber calculations in proton beams

J Wulff, KS Baumann, N Verbeek… - Physics in Medicine …, 2018 - iopscience.iop.org
Monte Carlo (MC) calculations are a fundamental tool for the investigation of ionization
chambers (ICs) in radiation fields, and for calculations in the scope of IC reference …

Monte Carlo calculation of perturbation correction factors for air-filled ionization chambers in clinical proton beams using TOPAS/GEANT

KS Baumann, S Kaupa, C Bach… - … für Medizinische Physik, 2021 - Elsevier
Introduction Current dosimetry protocols for clinical protons using air-filled ionization
chambers assume that the perturbation correction factor is equal to unity for all ionization …

Monte Carlo calculations of electron beam quality conversion factors for several ion chamber types

BR Muir, DWO Rogers - Medical Physics, 2014 - Wiley Online Library
Purpose: To provide a comprehensive investigation of electron beam reference dosimetry
using Monte Carlo simulations of the response of 10 plane‐parallel and 18 cylindrical ion …

Beam quality conversion factors for parallel‐plate ionization chambers in MV photon beams

BR Muir, MR McEwen, DWO Rogers - Medical Physics, 2012 - Wiley Online Library
Purpose: To investigate the behavior of plane‐parallel ion chambers in high‐energy photon
beams through measurements and Monte Carlo simulations. Methods: Ten plane‐parallel …

Beam quality corrections for parallel-plate ion chambers in electron reference dosimetry

K Zink, J Wulff - Physics in Medicine & Biology, 2012 - iopscience.iop.org
Current dosimetry protocols (AAPM, IAEA, IPEM, DIN) recommend parallel-plate ionization
chambers for dose measurements in clinical electron beams. This study presents detailed …

Experimental determination of the effective point of measurement for various detectors used in photon and electron beam dosimetry

HK Looe, D Harder, B Poppe - Physics in Medicine & Biology, 2011 - iopscience.iop.org
The subject of this study is the'shift of the effective point of measurement', Δz, well known as
a method of correction compensating for the'displacement effect'in photon and electron …

Impact of new ICRU Report 90 recommendations on calculated correction factors for reference dosimetry

D Czarnecki, B Poppe, K Zink - Physics in Medicine & Biology, 2018 - iopscience.iop.org
In 2016 the ICRU published a new report dealing with key data for ionizing radiation
dosimetry (ICRU Report 90). New recommendations have been made for the mean …

The determination of beam quality correction factors: Monte Carlo simulations and measurements

DM González-Castaño, GH Hartmann… - Physics in Medicine …, 2009 - iopscience.iop.org
Modern dosimetry protocols are based on the use of ionization chambers provided with a
calibration factor in terms of absorbed dose to water. The basic formula to determine the …