Figure 1
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.
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.
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.
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.
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.
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.
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.
Table 1
Results of Gamma analysis for the 26 mm ring and 30 mm ring applicator
| Ring, 26 mm | Gamma average | Gamma max | Gamma (0.00 – 1.00) | |
|---|---|---|---|---|
| plane A | 0.22 | 1.42 | 99.04% | |
| plane B | 0.10 | 1.29 | 99.31% | |
| plane C | 0.44 | 1.75 | 98.88% | |
| Ring, 30 mm | Gamma average | Gamma max | Gamma (0.00 – 1.00) | |
| plane A | 0.25 | 1.96 | 98.11% | |
| plane B | 0.27 | 2.00 | 97.94% | |
| plane C | 0.10 | 1.22 | 99.54% | |