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

scholarly journals Dosimetric evaluation of cobalt-60 teletherapy in advanced radiation oncology

2018 ◽  
Vol 18 (1) ◽  
pp. 88-92 ◽  
Author(s):  
Manny Mathuthu ◽  
Nhlakanipho Wisdom Mdziniso ◽  
Yihunie Hibstie Asres
Keyword(s):  
Three Dimensional ◽  
Intensity Modulated Radiotherapy ◽  
Intensity Modulated Radiation Therapy ◽  
Planning System ◽  
Treatment Planning System ◽  
Solid State Drives ◽  
Water Phantom ◽  
Intensity Modulated ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

AbstractBackgroundRecent investigations demonstrate a strong potential for cobalt-60 (Co-60)-based teletherapy. The influence of the lower energy and penetration of a cobalt-60 beam compared with linear accelerator beams is negligible for intensity-modulated radiotherapy.PurposeThe aim of this research is to investigate source head fluence modulation in cobalt-60 teletherapy by using a three-dimensional (3D) physical compensator and secondary collimator jaw motion.Materials and methodsThe Oncentra treatment planning system was used to develop three hypothetical plans by secondary collimator jaw motion. A clinical MDS Nordion Equinox 80 cobalt-60 teletherapy unit was used to acquire conventional water phantom beam characteristics. Fluence modulation experiments were executed at 5·0 cm depth in a PTW universal intensity-modulated radiation therapy (IMRT) verification phantom using calibrated Gafchromic external beam therapy 2 (EBT2) and RTQA2-1010 film batches. Gafchromic EBT2 film was used to sample intensity maps generated by secondary collimator jaw motion, yet Gafchromic RTQA2-1010 film sampled maps from the 3D physical compensator. The solid-state drives used were 75·0 and 74·3 cm for the Gafchromic EBT2 and Gafchromic RTQA2-1010 film measurements.ResultsA 2D gamma index analysis was coded to compare EBT2 film measurements with Digital Imaging and Communications in Medicine data. This analysis was also used to verify film measurements versus Monte-Carlo simulations.ConclusionLateral beam profiles generated from water phantom measurements were used to establish source head fluence modulation on the film measurements. The source head fluence of a cobalt-60 teletherapy beam could be modulated by secondary collimator jaw motion and using a 3D physical compensator.

scholarly journals Three-dimensional radiochromic film dosimetry for volumetric modulated arc therapy using a spiral water phantom

2013 ◽  
Vol 54 (6) ◽  
pp. 1153-1159 ◽  
Author(s):  
M. Tanooka ◽  
H. Doi ◽  
H. Miura ◽  
H. Inoue ◽  
Y. Niwa ◽  
...  
Keyword(s):  
Volumetric Modulated Arc Therapy ◽  
Three Dimensional ◽  
Radiochromic Film ◽  
Film Dosimetry ◽  
Water Phantom ◽  
Arc Therapy

SU-E-T-165: Systematic Evaluation of Uncertainties Associated with GAFCHROMIC EBT2 Film Dosimetry for 6MV Photon Beams

2011 ◽  
Vol 38 (6Part12) ◽  
pp. 3524-3524 ◽  
Author(s):  
J Kim ◽  
S Kim ◽  
M Shaikh ◽  
H Li ◽  
Y Huang ◽  
...  
Keyword(s):  
Systematic Evaluation ◽  
Film Dosimetry ◽  
Photon Beams ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

scholarly journals Three-dimensional high dose rate dosimetry of pulsed electron beams: The combined radiochromic film and calorimetric measurments

2004 ◽  
Vol 19 (2) ◽  
pp. 24-29
Author(s):  
Bojana Secerov ◽  
Goran Bacic
Keyword(s):  
Dose Rate ◽  
Maximum Dose ◽  
Three Dimensional ◽  
High Dose Rate ◽  
Radiochromic Film ◽  
High Dose ◽  
Film Dosimetry ◽  
Paramagnetic Resonance ◽  
Precision And Accuracy ◽  
Electron Paramagnetic

We present an evaluation of the precision and accuracy of image-based radiochromic film dosimetry. A stack of radiochromic film FWT-60 was used to map a radiation field produced by an electron pulse from a Febetron 707 accelerator (dose rate around 5?1011Gy/s; maximum dose around 160 kGy). The three-dimensional dose distribution was obtained by a He-Nescanning-laser microdensitometer and using image segmentation and correction for non-linear response of films. Calorimetry and electron paramagnetic resonance dosimetry were used to verify the results obtained with a FWT-60 film.

scholarly journals Gafchromic EBT2 film dosimetry in reflection mode with a novel plan-based calibration method

2013 ◽  
Vol 40 (1) ◽  
pp. 011720 ◽  
Author(s):  
I. Méndez ◽  
V. Hartman ◽  
R. Hudej ◽  
A. Strojnik ◽  
B. Casar
Keyword(s):  
Calibration Method ◽  
Film Dosimetry ◽  
Reflection Mode ◽  
Gafchromic Ebt2 Film ◽  
Ebt2 Film

A new method of readout in radiochromic film dosimetry

1998 ◽  
Vol 43 (8) ◽  
pp. 2251-2263 ◽  
Author(s):  
Peer Oliver Kellermann ◽  
Adolf Ertl ◽  
Erich Gornik
Keyword(s):  
New Method ◽  
Radiochromic Film ◽  
Film Dosimetry

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
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