Results 201 to 210 of about 2,171,676 (258)

Eigencolor radiochromic film dosimetry.

Medical Physics, 2021
PURPOSE The goal of this work is to propose a new multichannel method correcting for systematic thickness disturbances and to evaluate its precision in relevant radiation dosimetry applications.
H. Bouchard, I. Billas, Anna Subie, S. Duane   +3 more
semanticscholar   +4 more sources

Optimizing the recalibration process in radiochromic film dosimetry

Physics in Medicine & Biology, 2019
Intra-lot, inter-scan and other variabilities in radiochromic film dosimetry may have a severe impact on absolute dosimetry with this dosimeter. In the literature, several dosimetry protocols may be found characterized by different calibration functions ...
C. Ruiz-Morales, Juan Antonio Vera-Sánchez, A. González-López   +2 more
semanticscholar   +4 more sources

Evaluation of a new radiochromic film dosimeter, Gafchomic EBT4, for VMAT, SABR and HDR treatment delivery verification

Physics in Medicine and Biology, 2023
Objective. To evaluate a new film for radiotherapy dosimetry, Gafchromic EBT4, compared to the current EBT3. To evaluate dose-response and verify test cases in MV external beam and HDR brachytherapy. Approach.
A. Palmer, D. Nash, W. Polak, S. Wilby
semanticscholar   +1 more source

The Concept of X-Ray Ct Dose Evaluation Method Using Radiochromic Film and Film-Folding Phantom.

Radiation Protection Dosimetry, 2021
In this paper, we propose a novel radiochromic film (RCF)-based computed tomography (CT) dosimetry method, which is different from the method based on CT dose index. RCF dosimetry using Gafchromic QA2 films was performed using two lengths of film-folding
Nobuyoshi Tanki, T. Katsuda, R. Gotanda, T. Gotanda, Shinya Imai, Yasuyuki Kawaji, Atsushi Noguchi, T. Kuwano, H. Fujita, Y. Takeda   +9 more
semanticscholar   +1 more source

Technical Note: A 3D-printed phantom for radiochromic film evaluation of moving lung tumor SBRT without dose convolution.

Medical Physics (Lancaster), 2021
PURPOSE A common dosimetric quality-assurance (QA) method in stereotactic body radiation therapy (SBRT) of lung tumors is to use lung phantoms with radiochromic film.
P. Retif, Abdourahamane Djibo Sidikou, R. Letellier, Emilie Verrecchia-Ramos, P. Quetin   +4 more
semanticscholar   +1 more source

Radiochromic film dosimetry for protons up to 10 MeV with EBT2, EBT3 and unlaminated EBT3 films

Physics in Medicine and Biology, 2021
Passive dosimetry with radiochromic films is widely used in proton radiotherapy, both in clinical and scientific environments, thanks to its simplicity, high spatial resolution and dose-rate independence.
D. Sánchez-Parcerisa, I. Sanz-García, P. Ibáñez, S. España, A. Espinosa, Patricia Carolina Gutierrez-Neira, A. López, J. Vera, A. Mazal, L. Fraile, José Manuel Udías   +10 more
semanticscholar   +1 more source

Improving analysis of radiochromic films

Radiation Physics and Chemistry, 2014
Abstract An appropriate radiochromic film should respond uniformly throughout its surface after exposure to a uniform radiation field. The evaluation of radiochromic films may be carried out, for example, by measuring color intensities in film-based digitized images.
A.T. Baptista Neto, Luiz O. Faria, L.C. Meira-Belo   +2 more
openaire   +2 more sources

Ultraviolet radiation dosimetry with radiochromic film

Physics in Medicine and Biology, 2000
Radiochromic film is tested for its broad-band response to ultraviolet (UV) B (290-320 nm) and A (320 nm400 nm), visible and infrared radiation produced by a solar simulator and examined for dosimetry in ultraviolet radiation. Results show that MD-55-2 radiochromic film in solar and fluorescent light sources responds almost exclusively to broad-band ...
Donna Abbati, G.E. Greenoak, Martin J Butson, Martin J Butson, Tsang Cheung, Peter K.N. Yu   +5 more
openaire   +3 more sources

A new radiochromic dosimeter film

International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1990
Abstract By employing acid-sensitive leuco dyes in a chlorine-containing polymer matrix, a new radiochromic dosimeter film has been developed for gamma, electron beam, and ultraviolet radiation. These dosimeter films undergo a color change from colorless to royal blue, red fuchsia, or black, depending on dye selection, and have been characterized ...
D.C. Lynch, P.S. Willet, Lu Ann N. Sidney   +2 more
openaire   +2 more sources

Dosimetric characteristics of an improved radiochromic film

Medical Physics, 1996
Recently, a new model of radiochromic film has been developed for medical applications to provide a higher sensitivity and better uniformity of response than existing models (i.e., MD-55). Dosimetric characteristics including sensitivity, linearity, reproducibility, uniformity, and dependence on energy and time have been studied experimentally.
Ali S. Meigooni, S. R. Szeglin, Michael Sanders, G. S. Ibbott   +3 more
openaire   +3 more sources