Results 221 to 230 of about 2,244,912 (267)
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Multichannel film dosimetry with nonuniformity correction
Medical Physics, 2011A new method to evaluate radiochromic film dosimetry data scanned in multiple color channels is presented. This work was undertaken to demonstrate that the multichannel method is fundamentally superior to the traditional single channel method. The multichannel method allows for the separation and removal of the nondose-dependent portions of a film ...
Andre Micke, David F. Lewis, Xiang Yu
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Verification of IMRT fields by film dosimetry
Medical Physics, 2003In intensity modulated radiation therapy (IMRT) the aim of an accurate conformal dose distribution is obtained through a complex process. This ranges from the calculation of the optimal distribution of fluence by the treatment planning system (TPS), to the dose delivery through a multilamellar collimator (MLC), with several segments per beam in the ...
BUCCIOLINI, MARTA +2 more
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Medical Physics (Lancaster), 2019
PURPOSE To introduce a model that reproducibly linearizes the response from radiochromic film (RCF) dosimetry systems at extended dose range. To introduce a correction method, generated from the same scanned images, which corrects for scanner temporal ...
S. Aldelaijan +6 more
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PURPOSE To introduce a model that reproducibly linearizes the response from radiochromic film (RCF) dosimetry systems at extended dose range. To introduce a correction method, generated from the same scanned images, which corrects for scanner temporal ...
S. Aldelaijan +6 more
semanticscholar +1 more source
A Note on Mylar Film Dosimetry
Radiation Research, 1961The ultraviolet transmission of Mylar films, 0.00025 inch and 0.007 inch thick, can be used as a dosimeter to cover the absorbed dose range from 5 x 10/ sup 6/ rads to 10/sup 9/ rads. The 0.007-inch film exhibits a rapid initial fading in optical density, arriving at a constant value in less than 24 hours, whereas the 0.00025-inch Mylar is free from ...
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Effect of processor temperature on film dosimetry
Medical Dosimetry, 2012Optical density (OD) of a radiographic film plays an important role in radiation dosimetry, which depends on various parameters, including beam energy, depth, field size, film batch, dose, dose rate, air film interface, postexposure processing time, and temperature of the processor.
Indra J. Das, S Srivastava
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Dosimetry of blood irradiation with radiochromic film
Transfusion Medicine, 1999It has been shown that radiochromic film is an ideal dosimeter for assessment and verification of delivered dose to irradiated blood products. Using a parallel opposing two‐field technique on a medical linear accelerator, blood is irradiated to diminish the risk of transfusion‐associated graft vs. host disease (TA‐GVHD).
Anthony Arnold +6 more
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Entrance surface dosimetry with radiophotoluminescent films
Radiation Measurements, 2020Abstract In a wide international cooperation, thin dosimetric films were developed for radiation protection and clinical dosimetry applications. The goal was providing proof of principle of a novel approach to entrance surface dosimetry, in general, and to extremity dosimetry, in particular.
Luigi Lazzeri +11 more
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Ultraviolet radiation dosimetry with radiochromic film
Physics in Medicine and Biology, 2000Radiochromic 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 +5 more
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Radiation Measurements, 2006
Abstract The object of this paper is to give a new user some practical information on the use of radiochromic films for medical applications. While various aspects of radiochromic film dosimetry for medical applications have been covered in some detail in several other excellent review articles which have appeared in the last few years [Niroomand-Rad,
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Abstract The object of this paper is to give a new user some practical information on the use of radiochromic films for medical applications. While various aspects of radiochromic film dosimetry for medical applications have been covered in some detail in several other excellent review articles which have appeared in the last few years [Niroomand-Rad,
openaire +2 more sources