Results 161 to 170 of about 19,704 (214)
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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,
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Film dosimetry of clinical electron beams
Medical Dosimetry, 1990Film dosimetry is used widely to obtain relative dose distributions of clinical electron beams in phantoms. Nevertheless, measurement results obtained with film dosimetry may lack precision and reliability. In this paper well defined and reproducible methods in film dosimetry are discussed.
Van Battum, L. J., Huizenga, H.
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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 ...
N, Suchowerska +4 more
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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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Raman scattering for dosimetry using
PurposeRaman scattering spectra can be thought of as the “fingerprints” of the investigated material. The purpose of this work was to link the absorbed doses of irradiated radiochromic film at the micrometer level with changes in their Raman spectra.MethodsRaman spectra of irradiated GAFCHROMIC EBT3 film with doses ranging from 0 to 40 Gy were acquired.
Olga S, Talarico +2 more
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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.
Shiv P, Srivastava, Indra J, Das
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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).
M J, Butson +6 more
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Film dosimetry for fluoroscopic procedures: potential errors
Radiation Protection Dosimetry, 2005Kodak EDR 2 film was calibrated across the range of beam qualities and exposure rates typically used in our cardiac catheterisation laboratory. Its dose-response curve was successfully modelled up to its saturation point of 1 Gy. The consistency of the film's response with film batch, time between exposure and processing processor and day-to-day ...
R E, Morrell, A T, Rogers
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Gafchromic EBT film dosimetry in proton beams
Physics in Medicine and Biology, 2010The depth dose verification of active scanning proton beams is extremely time consuming with ion chamber measurements for beam data commissioning and patient specific measurements. With widespread use of Gafchromic EBT films, two-dimensional high-resolution dosimetry is explored in a uniform scanning proton beam.
Li, Zhao, Indra J, Das
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