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Quality assurance procedures based on dosimetric, gamma analysis as a fast reliable tool for commissioning brachytherapy treatment planning systems Cover

Quality assurance procedures based on dosimetric, gamma analysis as a fast reliable tool for commissioning brachytherapy treatment planning systems

Open Access
|Nov 2017

Figures & Tables

Figure 1

Geometry of the measurements, tandem ring applicator and Gafchromic® film located in planes (A), (B) and (C), respectively.
Geometry of the measurements, tandem ring applicator and Gafchromic® film located in planes (A), (B) and (C), respectively.

Figure 2

Digitized dosimetric films as a visual input data for two applicators setup and for all three analyzed dose planes. (I) Applicator ring diameter 26 mm, Gafchromic® film located in planes (A), (B) and (C), respectively. (II) Applicator ring diameter 30 mm: Gafchromic® film located in planes (A), (B) and (C), respectively.
Digitized dosimetric films as a visual input data for two applicators setup and for all three analyzed dose planes. (I) Applicator ring diameter 26 mm, Gafchromic® film located in planes (A), (B) and (C), respectively. (II) Applicator ring diameter 30 mm: Gafchromic® film located in planes (A), (B) and (C), respectively.

Figure 3

Data analysis for the 26 mm ring in plane A. (I)-dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 26 mm ring in plane A. (I)-dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Figure 4

Data analysis for the 26 mm ring in plane B. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 26 mm ring in plane B. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Figure 5

Data analysis for the 26 mm ring in plane C. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 26 mm ring in plane C. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Figure 6

Data analysis for the 30 mm ring in plane A. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 30 mm ring in plane A. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Figure 7

Data analysis for the 30 mm ring in plane B. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 30 mm ring in plane B. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Figure 8

Data analysis for the 30 mm ring in plane C. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.
Data analysis for the 30 mm ring in plane C. (I) - dose distribution obtained from film, (II) - dose distribution obtained from TPS, (III) - isodoses obtained from film (dots) and TPS (lines), (IV) - gamma factor map.

Results of Gamma analysis for the 26 mm ring and 30 mm ring applicator

Ring, 26 mmGamma averageGamma maxGamma (0.00 – 1.00)
plane A0.221.4299.04%
plane B0.101.2999.31%
plane C0.441.7598.88%
Ring, 30 mmGamma averageGamma maxGamma (0.00 – 1.00)
plane A0.251.9698.11%
plane B0.272.0097.94%
plane C0.101.2299.54%
DOI: https://doi.org/10.1515/raon-2017-0050 | Journal eISSN: 1581-3207 | Journal ISSN: 1318-2099
Language: English
Page range: 469 - 474
Submitted on: Nov 25, 2016
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Accepted on: Oct 10, 2017
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Published on: Nov 29, 2017
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 Grzegorz Zwierzchowski, Grzegorz Bieleda, Janusz Skowronek, published by Association of Radiology and Oncology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.