Consistency in quality correction factors for ionization chamber dosimetry in scanned proton beam therapy
Sign Up to like & getrecommendations! Published in 2017 at "Medical Physics"
DOI: 10.1002/mp.12434
Abstract: Purpose The IAEA TRS‐398 code of practice details the reference conditions for reference dosimetry of proton beams using ionization chambers and the required beam quality correction factors (kQ). Pencil beam scanning (PBS) systems cannot approximate… read more here.
Keywords: ionization chamber; correction factors; quality; beam ... See more keywords
Study of the correction factors for aircraft noise façade measurements
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.10.007
Abstract: Abstract Nowadays, society has the need for air transportation all around the world. The yearly increase in the number of passengers forces airports to operate to a maximum of their capacity. This leads to an… read more here.
Keywords: correction factors; correction factor; correction; geometry ... See more keywords
Sample size correction factors for indentation on asphalt bitumens
Sign Up to like & getrecommendations! Published in 2017 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2017.07.213
Abstract: Abstract Closed form solutions for obtaining fundamental properties of viscoelastic materials through indentation assume a semi-infinite indented media. For real sample sizes, proper material characterization requires determining the effect of finite sample dimensions. Available solutions… read more here.
Keywords: size correction; correction factors; correction; sample sizes ... See more keywords
[P298] The influence of variations of the beam quality for high energy photon beams on tissue inhomogeneity correction factors for radiotherapy treatment plans
Sign Up to like & getrecommendations! Published in 2018 at "Physica Medica"
DOI: 10.1016/j.ejmp.2018.06.642
Abstract: Purpose The purpose of this study was to assess the effect of variations of the beam quality (TPR20,10) for photon beams on tissue inhomogeneity correction factors (ICFs). Methods A total of 90 three-dimensional conformal radiotherapy… read more here.
Keywords: energy; correction factors; treatment plans; correction ... See more keywords
Methodology for determination of correction factors in direct gamma spectrometric measurement of radionuclides in sediments
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Sediment Research"
DOI: 10.1016/j.ijsrc.2017.05.004
Abstract: In this study, the practical methodologies are described for the determination of the factors for the self-absorption effect (Fs), spectral interferences (Fcsi), and true coincidence summing effects (Fcoi), which are used in direct gamma-spectrometric measurement… read more here.
Keywords: direct gamma; methodology; gamma spectrometric; correction factors ... See more keywords
Calculation of self-absorption and coincidence summing correction factors for the extended sources using GEANT4
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DOI: 10.1051/radiopro/2019006
Abstract: A detailed study of the full energy peak efficiency of a high purity germanium (HPGe) detector including the effect of source self-absorption and coincidence summing was performed using Monte Carlo simulation, as it is difficult… read more here.
Keywords: source; self absorption; correction factors; coincidence summing ... See more keywords
Small composite field correction factors for the CyberKnife radiosurgery system: clinical and PCSR plans.
Sign Up to like & getrecommendations! Published in 2017 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/aa954c
Abstract: A formalism has been proposed for small and non-standard photon fields in which [Formula: see text] correction factors are used to correct dosimeter response in small fields (indiviual or composite) relative to that in a… read more here.
Keywords: correction factors; field; correction; plan ... See more keywords
Determination of ion recombination and polarity effect correction factors for a plane-parallel ionization Bragg peak chamber under proton and carbon ion pencil beams.
Sign Up to like & getrecommendations! Published in 2019 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/ab0db4
Abstract: Within the dosimetric characterization of particle beams, laterally-integrated depth-dose-distributions (IDDs) are measured and provided to the treatment planning system (TPS) for beam modeling or used as a benchmark for Monte Carlo (MC) simulations. The purpose… read more here.
Keywords: carbon; correction factors; correction; polarity ... See more keywords
Small field dosimetry correction factors for circular and MLC shaped fields with the CyberKnife M6 System: evaluation of the PTW 60023 microSilicon detector.
Sign Up to like & getrecommendations! Published in 2019 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/ab6154
Abstract: The PTW 60023 microSilicon is a new unshielded diode detector for small-field photon dosimetry. It provides improved water equivalence and a slightly larger sensitive region diameter in comparison to previous diode detectors in this range.… read more here.
Keywords: correction factors; diode; field; detector ... See more keywords
Monte Carlo and water calorimetric determination of kilovoltage beam radiotherapy ionization chamber correction factors.
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DOI: 10.1088/1361-6560/ab82e7
Abstract: The in-phantom calibration method for radiotherapy kilovoltage x-ray beams requires ionization chamber correction factors. The overall ionization chamber correction factor accounts for changes in the chamber response due to the displacement of water by the… read more here.
Keywords: correction factors; water; correction; chamber correction ... See more keywords
Re-evaluation of the correction factors for the GROVEX
Sign Up to like & getrecommendations! Published in 2018 at "Metrologia"
DOI: 10.1088/1681-7575/aaa7fc
Abstract: The GROVEX (GROssVolumige EXtrapolationskammer, large-volume extrapolation chamber) is the primary standard for the dosimetry of low-dose-rate interstitial brachytherapy at the Physikalisch-Technische Bundesanstalt (PTB). In the course of setup modifications and re-measuring of several dimensions, the… read more here.
Keywords: evaluation correction; seed; correction factors; correction ... See more keywords