84 oral An experimental comparison of absorbed dose to water based dosimetry and air kerma based dosimetry in high-energy photon beams with graphite walled cylindrical ionization chambers

2001 ◽  
Vol 61 ◽  
pp. S35
Keyword(s):  
Absorbed Dose ◽  
High Energy ◽  
Experimental Comparison ◽  
High Energy Photon ◽  
Photon Beams ◽  
Ionization Chambers ◽  
Energy Photon ◽  
Air Kerma ◽  
Water Based ◽  
Absorbed Dose To Water

Absorbed dose to water based dosimetry versus air kerma based dosimetry for high-energy photon beams: an experimental study

2002 ◽  
Vol 47 (3) ◽  
pp. 421-440 ◽  
Author(s):  
Hugo Palmans ◽  
Laila Nafaa ◽  
Jo De Jans ◽  
Sofie Gillis ◽  
Marie-Thérèse Hoornaert ◽  
...  
Keyword(s):  
Experimental Study ◽  
Absorbed Dose ◽  
High Energy ◽  
High Energy Photon ◽  
Photon Beams ◽  
Energy Photon ◽  
Air Kerma ◽  
Water Based ◽  
Absorbed Dose To Water

scholarly journals AIR KERMA BASED DOSIMETRY VERSUS ABSORBED DOSE TO WATER BASED DOSIMETRY FOR HIGH-ENERGY PHOTON.

2008 ◽  
Vol 4 (Issue 3-4) ◽  
pp. 58-63
Author(s):  
E. Attalla ◽  
A. Elsayed ◽  
N. Khaled ◽  
H. Abou-elenein
Keyword(s):  
Absorbed Dose ◽  
High Energy ◽  
High Energy Photon ◽  
Energy Photon ◽  
Air Kerma ◽  
Water Based ◽  
Absorbed Dose To Water

scholarly journals Study on the Displacement Effect at Cylindrical Ionization Chambers in High Energy Photon of Flat and True Beams

2018 ◽  
Vol 41 (2) ◽  
pp. 227-235
Author(s):  
Kumaresh Chandra Paul ◽  
Guenther H Hartmann ◽  
Golam Abu Zakaria
Keyword(s):  
Absorbed Dose ◽  
High Energy ◽  
Photon Beams ◽  
Ionization Chambers ◽  
Energy Photon ◽  
Displacement Effect ◽  
Water Determination ◽  
Measured Dose ◽  
Absorbed Dose To Water ◽  
Academy Of Sciences

Absorbed dose to water determination in the clinical practice introduces several perturbations factors in ionization chamber dosimetry. Displacement perturbation is one of them, which can be corrected by introducing the chamber-specific quality correction factor (kQ) or by introducing the concept of effective point of measurement (EPOM). The EPOM is the point in the chamber at which the measured dose would be the same as the measuring depth in absence of chamber. The aim of this study was to measure the displacement effect at cylindrical ionization chambers in 6 and 10 MV flat and true photon beams. The percentage of depth doses (PDDs) were considered for determining the shift of EPOM with respect to the well established Roos chamber. The displacement effect obtained a range of 0.25 to 0.57 times r (chamber radius) both in flat and true beams, which disagreed with the TRS-398 protocol recommended constant value of 0.6r.Journal of Bangladesh Academy of Sciences, Vol. 41, No. 2, 227-235, 2017

Dosimetry of High Energy Photon Beams Based on Standards of Absorbed Dose to Water: Corrigenda

2001 ◽  
Vol 1 (3) ◽  
pp. 94-94
Author(s):  
W. G. Alberts ◽  
D. T. Bartlett ◽  
J.-L. Chartier ◽  
C. R. Hirning ◽  
J. C. McDonald ◽  
...  
Keyword(s):  
Absorbed Dose ◽  
High Energy ◽  
High Energy Photon ◽  
Photon Beams ◽  
Energy Photon ◽  
Absorbed Dose To Water

Comparison of the NMIJ and the ARPANSA standards for absorbed dose to water in high-energy photon beams

2014 ◽  
Vol 164 (3) ◽  
pp. 181-186 ◽  
Author(s):  
M. Shimizu ◽  
Y. Morishita ◽  
M. Kato ◽  
T. Tanaka ◽  
T. Kurosawa ◽  
...  
Keyword(s):  
Absorbed Dose ◽  
High Energy ◽  
High Energy Photon ◽  
Photon Beams ◽  
Energy Photon ◽  
Absorbed Dose To Water
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