The energy dependence of the lateral dose response functions of detectors with various densities in photon-beam dosimetry

2017 ◽  
Vol 62 (3) ◽  
pp. N32-N44 ◽  
Author(s):  
Hui Khee Looe ◽  
Dietrich Harder ◽  
Björn Poppe
Keyword(s):  
Energy Dependence ◽  
Dose Response ◽  
Photon Beam ◽  
Response Functions ◽  
Beam Dosimetry

Magnetic field influences on the lateral dose response functions of photon-beam detectors: MC study of wall-less water-filled detectors with various densities

2017 ◽  
Vol 62 (12) ◽  
pp. 5131-5148 ◽  
Author(s):  
Hui Khee Looe ◽  
Björn Delfs ◽  
Daniela Poppinga ◽  
Dietrich Harder ◽  
Björn Poppe
Keyword(s):  
Magnetic Field ◽  
Dose Response ◽  
Photon Beam ◽  
Response Functions

SU-E-T-114: Characterization of the Spatial Response Functions of Ionization Chambers for Photon Beam Dosimetry

2012 ◽  
Vol 39 (6Part11) ◽  
pp. 3729-3729
Author(s):  
HK Looe ◽  
TS Stelljes ◽  
D Harder ◽  
B Poppe
Keyword(s):  
Photon Beam ◽  
Response Functions ◽  
Ionization Chambers ◽  
Spatial Response ◽  
Beam Dosimetry

scholarly journals Development of dose-response functions for historic paper degradation using exposure to natural conditions and multivariate regression

2019 ◽  
Vol 168 ◽  
pp. 108944 ◽  
Author(s):  
Gianluca Pastorelli ◽  
Shuo Cao ◽  
Irena Kralj Cigić ◽  
Costanza Cucci ◽  
Abdelrazek Elnaggar ◽  
...  
Keyword(s):  
Dose Response ◽  
Multivariate Regression ◽  
Response Functions ◽  
Natural Conditions ◽  
Paper Degradation ◽  
Historic Paper

Energy dependence and dose response of Gafchromic EBT2 film over a wide range of photon, electron, and proton beam energies

2010 ◽  
Vol 37 (5) ◽  
pp. 1942-1947 ◽  
Author(s):  
Bijan Arjomandy ◽  
Ramesh Tailor ◽  
Aman Anand ◽  
Narayan Sahoo ◽  
Michael Gillin ◽  
...  
Keyword(s):  
Proton Beam ◽  
Energy Dependence ◽  
Dose Response ◽  
Wide Range ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

Percentage depth dose fragmentation for investigating and assessing the photon beam dosimetry quality

2018 ◽  
Vol 18 (03) ◽  
pp. 280-284 ◽  
Author(s):  
Mohamed Bencheikh ◽  
Abdelmajid Maghnouj ◽  
Jaouad Tajmouati
Keyword(s):  
Exponential Decay ◽  
Target Volume ◽  
Photon Beam ◽  
Field Size ◽  
Photon Beams ◽  
Energy Agency ◽  
Percentage Depth Dose ◽  
Depth Dose ◽  
Beam Dosimetry

AbstractAimThe purpose of this study is to introduce a new approach to assess the dosimetry quality of photon beam with energy and irradiation field size. This approach is based on percentage depth dose (PDD) fragmentation for investigating the dosimetry quality.Materials and methodsFor the investigation of the dosimetry quality of 6 and 18 MV photon beams, we have proceeded to fragment the PDD at different field sizes. This approach checks the overall PDD and is not restricted to the exponential decay regions, as per the International Atomic Energy Agency Technical Reports Series No 398 and the American Association of Physicist in Medicine Task Group 51 recommendations.Results and discussionThe 6 MV photon beam deposited more energy in the target volume than the 18 MV photon beam. The dose delivered by the 6 MV beam is greater by a factor of 1·5 than that delivered by the 18 MV beam in the build-up region and the dose delivered by the 6 MV beam is greater by a factor of 2·6 than that delivered by the 18 MV beam in the electronic equilibrium and the exponential decay regions.ConclusionThe dose measured at different points of the beam is higher for 6 MV than for 18 MV photon beam. Therefore, the 6 MV beam is more dosimetrically efficient than the 18 MV beam. Using the proposed approach, we can assess the dosimetry quality by taking into account overall PDD not only in the exponential decay region but also in the field.

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