Results 211 to 220 of about 2,171,676 (258)
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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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Medical Physics (Lancaster), 2020
PURPOSE To quantify and verify the dosimetric impact of HDR source positional uncertainty in brachytherapy, and to introduce a model for 3D position tracking of the HDR source based on a 2D measurement.
S. Aldelaijan +7 more
semanticscholar +1 more source
PURPOSE To quantify and verify the dosimetric impact of HDR source positional uncertainty in brachytherapy, and to introduce a model for 3D position tracking of the HDR source based on a 2D measurement.
S. Aldelaijan +7 more
semanticscholar +1 more source
A new approach to radiochromic film dosimetry based on non-local means
Physics in Medicine and Biology, 2020Radiochromic film in conjunction with flatbed scanners are frequently employed as dosimeters for advanced techniques in radiotherapy. Their strengths are as follows: light element composition, low energy dependence, near biological tissue equivalence and
C. Rodríguez +2 more
semanticscholar +1 more source
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,
openaire +2 more sources
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
Verification of brachytherapy dosimetry with radiochromic film
Medical Dosimetry, 1999The aim of this work is to empirically validate the optimized dose distribution calculated by the Nucletron Brachytherapy Planning System (v. 13.3) at a distance of 1.0 cm from a stepping source of high-dose-rate-iridium 192 (192Ir). The longitudinal dose distribution at 1.0 cm from a straight pathway of multiple-source positions is measured using ...
T Wong +6 more
openaire +3 more sources
A prototype quantitative film scanner for radiochromic film dosimetry
Medical Physics, 2008We have developed a high resolution, quantitative, two-dimensional optical film scanner for use with a commercial high sensitivity radiochromic film (RCF) for measuring single fraction external-beam radiotherapy dose distributions. The film scanner was designed to eliminate artifacts commonly observed in RCF dosimetry. The scanner employed a stationary
M Ranade +5 more
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Dosimetric evaluation of methyl red radiochromic film for radiation processing
, 2020Purpose The purpose of this paper is to present a radiochromic film dosimeter containing polyvinyl alcohol (PVA) matrix and various concentrations of methyl red (MR) dye for high dose measurements.
Awad A. Al Zahrany +3 more
semanticscholar +1 more source
New developments in radiochromic film dosimetry
Radiation Protection Dosimetry, 2006NIST has been a pioneer in the use of radiochromic film for medical dosimetry applications. Beginning in 1988 with experiments with (90)Sr/Y ophthalmic applicators, this work has continued into the present. A review of the latest applications is presented, which include high activity low-energy photon source dosimetry and ultra-high resolution film ...
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Use of a control film piece in radiochromic film dosimetry
Physica Medica, 2016Radiochromic films change their color upon irradiation due to polymerization of the sensitive component embedded within the sensitive layer. However, agents, other than monitored radiation, can lead to a change in the color of the sensitive layer (temperature, humidity, UV light) that can be considered as a background signal and can be removed from the
Nada Tomic +8 more
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Directional dependence in film dosimetry: radiographic and radiochromic film
Physics in Medicine and Biology, 2001The trend towards conformal, intensity modulated radiotherapy treatments has established the need for a true integrating dosimeter. In traditional radiotherapy, radiographic film dosimetry is commonly used. The accuracy and reproducibility of film optical density as an indicator of dose is influenced by several variables, including the chemical ...
P W Hoban +4 more
openaire +3 more sources