SU-E-T-224: Dose Distribution of Oesophagus Stents Measured by EBT2 Film Dosimetry

2012 ◽  
Vol 39 (6Part13) ◽  
pp. 3755-3755
Author(s):  
D Poppinga ◽  
A Schoenfeld ◽  
N Chofor ◽  
B Poppe
Keyword(s):  
Dose Distribution ◽  
Film Dosimetry ◽  
Ebt2 Film

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

2017 ◽  
Vol 51 (4) ◽  
pp. 469-474 ◽  
Author(s):  
Grzegorz Zwierzchowski ◽  
Grzegorz Bieleda ◽  
Janusz Skowronek
Keyword(s):  
Quality Assurance ◽  
Treatment Planning ◽  
Dose Distribution ◽  
Beam Quality ◽  
Calculated Data ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Planning Systems ◽  
Treatment Planning Systems ◽  
Gamma Analysis

Abstract Background Fast and easily repeatable methods for commissioning procedures for brachytherapy (BT) treatment planning systems (TPS) are needed. Radiochromic film dosimetry with gamma analysis is widely used in external beam quality assurance (QA) procedures and planar film dosimetry is also increasingly used for verification of the dose distribution in BT applications. Using the gamma analysis method for comparing calculated and measured dose data could be used for commissioning procedures of the newly developed TG-186 and MBDCA calculation algorithms. The aim of this study was dosimetric verification of the calculation algorithm used in TPS when the CT/MRI ring applicator is used. Materials and methods Ring applicators with 26 and 30 mm diameters and a 60 mm intra-uterine tube with 60° angle were used for verification. Gafchromic® EBT films were used as dosimetric media. Dose grids, corresponding to each plane (dosimetric film location), were exported from the TPS as a raw data. Gafchromic® films were digitized after irradiation. gamma analysis of the data were performed using the OMNI Pro I’mRT® system, as recommended by the AAPM TG-119 rapport criterion for gamma analysis of 3%, 3 mm and a level of 95%. Results For the 26 mm and 30 mm rings, the average gamma ranged, respectively, from 0.1 to 0.44 and from 0.1 to 0.27. In both cases, 99% of the measured points corresponded with the calculated data. Conclusions This analysis showed excellent agreement between the dose distribution calculated with the TPS and the doses measured by Gafchromic films. This finding confirms the viability of using film dosimetry in BT.

scholarly journals PO-0777: In vivo EBT2 film dosimetry: Simple and precise skin dose measurement using μm-scale signal extraction

2013 ◽  
Vol 106 ◽  
pp. S296
Author(s):  
N. Corradini ◽  
K. Schombourg ◽  
S. Presilla ◽  
G. Ballerini ◽  
A. Franzetti-Pellanda
Keyword(s):  
Signal Extraction ◽  
Skin Dose ◽  
Dose Measurement ◽  
Film Dosimetry ◽  
Ebt2 Film

Dosimetric feasibility of an anthropomorphic three-dimensional PRESAGE® dosimeter for verification of single entry hybrid catheter accelerated partial breast brachytherapy

2018 ◽  
Vol 17 (4) ◽  
pp. 403-410 ◽  
Author(s):  
Khalid Iqbal ◽  
Geoffrey S. Ibbott ◽  
Ryan G. Lafratta ◽  
Kent A. Gifford ◽  
Muhammad Akram ◽  
...  
Keyword(s):  
Dose Distribution ◽  
Three Dimensional ◽  
Target Volume ◽  
Normal Breast ◽  
Planning System ◽  
Treatment Planning System ◽  
Skin Dose ◽  
Line Profiles ◽  
Gamma Analysis ◽  
Ebt2 Film

AbstractPurposeTo determine the feasibility of an anthropomorphic breast polyurethane-based three-dimensional (3D) dosimeter with cavity to measure dose distributions and skin dose for a commercial strut-based applicator strut-adjusted volume implant (SAVI™) 6–1.Materials and methodsAn anthropomorphic breast 3D dosimeter was created with a cavity to accommodate the SAVI™ strut-based device. 2 Gy was prescribed to the breast dosimeter having D95 to planning target volume evaluation (PTV_EVAL) while limiting 125% of the prescribed dose to the skin. Independent dose distribution verification was performed with GAFCHROMIC® EBT2 film. The dose distribution from the 3D dosimeter was compared to the distributions from commercial brachytherapy treatment planning system (TPS) and film. Point skin doses, line profiles and dose–volume histogram (DVHs) for the skin and PTV_EVAL were compared.ResultsThe maximum difference in skin dose for TPS and the 3D dosimeter was 4% whereas 41% between the TPS and EBT2 film. The maximum dose difference for line profiles between TPS, 3D dosimeter, and film was 4·1%. DVHs of skin and PTV_EVAL for TPS and 3D dosimeter differed by a maximum of 4% at 5 mm depth and skin differed by a maximum 1·5% between TPS and 3D dosimeter. The criterion for gamma analysis comparison was 92·5% at ±5%±3 mm criterion. The TPS demonstrated at least ±5% comparability in predicting dose to the skin, PTV_EVAL and normal breast tissue.Conclusions3D anthropomorphic polyurethane dosimeter with cavity gives comparable results to the TPS dose predictions and GAFCHROMIC® EBT2 film results in the context of HDR brachytherapy.

Quantitative analysis of dose distribution to determine optimal width of respiratory gating window using Gafchromic EBT2 film

2013 ◽  
Vol 62 (4) ◽  
pp. 657-663 ◽  
Author(s):  
Sung Hyun Lee ◽  
Kum Bae Kim ◽  
Mi-Sook Kim ◽  
Hyung-Jun Yoo ◽  
Seungwoo Park ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Dose Distribution ◽  
Respiratory Gating ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film ◽  
Gating Window

Three-dimensional radiochromic film dosimetry of proton clinical beams using a gafchromic EBT2 film array

2012 ◽  
Vol 151 (2) ◽  
pp. 272-277 ◽  
Author(s):  
J. Kim ◽  
M. Yoon ◽  
S. Kim ◽  
D. Shin ◽  
S. B. Lee ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

SU-GG-T-228: A New Technique to Measure Orthogonal Dose Distribution in Phantom for IMRT QA with Gafchromic EBT2 Film

2010 ◽  
Vol 37 (6Part19) ◽  
pp. 3237-3237
Author(s):  
S Ozawa ◽  
T Furuya ◽  
M Kawashima ◽  
C Kurokawa ◽  
K Karasawa ◽  
...  
Keyword(s):  
Dose Distribution ◽  
New Technique ◽  
Imrt Qa ◽  
A New Technique ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

SU-E-T-244: High Spatial Resolution EBT2 Film Dosimetry

2012 ◽  
Vol 39 (6Part13) ◽  
pp. 3759-3759
Author(s):  
D Poppinga ◽  
A Schoenfeld ◽  
B Poppe ◽  
N Chofor
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Film Dosimetry ◽  
Ebt2 Film
Sign in / Sign up

Export Citation Format

Share Document