Results 211 to 220 of about 15,949 (247)
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Miniature semiconductor detectors for in vivo dosimetry
Radiation Protection Dosimetry, 2006Silicon mini-semiconductor detectors are found in wide applications for in vivo personal dosimetry and dosimetry and microdosimetry of different radiation oncology modalities. These applications are based on integral and spectroscopy modes of metal oxide semiconductor field effect transistor and silicon p-n junction detectors.
Rosenfeld, Anatoly B. +6 more
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Evaluation of the veridose in vivo dosimetry system
Medical Dosimetry, 2002Recently, a new design of an in vivo diode dosimetry system, VeriDose diodes, has been introduced by Nuclear Associates to verify the radiation dose delivery to patients treated with either photon or electron beams. The goal of this study is to evaluate the linearity, accuracy, reproducibility, energy dependence, and orientation dependence of this ...
Ali S, Meigooni +2 more
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Radiology, 1970
Abstract The authors describe the design and development of systems for direct in vivo measurement of dose within the living subject. They have used the method since 1957 for therapy, diagnosis, nuclear medicine, and radio-biology. The systems include home-grown and commercial luminescent solid state dosimeters of various types and geometries, read-out
B, Roswit +4 more
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Abstract The authors describe the design and development of systems for direct in vivo measurement of dose within the living subject. They have used the method since 1957 for therapy, diagnosis, nuclear medicine, and radio-biology. The systems include home-grown and commercial luminescent solid state dosimeters of various types and geometries, read-out
B, Roswit +4 more
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A practical approach to diode based in vivo dosimetry for intensity modulated radiotherapy [PDF]
Radiotherapy and Oncology, 2011 A method for in vivo entrance dosimetry, using point detectors, in intensity modulated radiotherapy has been clinically evaluated. Diode dosimetry was performed for treatments of the head and neck and prostate regions. The results were good; 92.2% of the
Tufve Nyholm, Jorgen Olofsson
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A Projection Chest Phantom for in vivo Dosimetry
American Industrial Hygiene Association Journal, 1970A unique projection chest phantom has been constructed of very inexpensive materials. This phantom provides for complete variability of chest thickness and incorporates bone structures of a bone-equivalent substance. The phantom contains lung cavities in which doped artificial lungs can simulate any possible lung deposition.
D A, Waite, B V, Andersen, P E, Bramson
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In vivo dosimetry during pelvic treatment
Radiotherapy and Oncology, 1992High precision in vivo entrance and exit dose measurements have been performed with p-type diodes on patients during 8 MV X-ray irradiation of the pelvis, to investigate the accuracy of dose calculations in this region. Based on phantom measurements the accuracy of the p-type diode measuring system itself, i.e.
Heukelom, S. +2 more
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2018
Introduction: The most modern radiotherapy devices are equipped with an Electronic Portal Imaging Device (EPID) system which is located on opposite side of the machine’s head. EPID system is often used to setting up the position verification during or between radiotherapy sessions.
Mohammadi, Mahdi, Haghparast, Abbas
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Introduction: The most modern radiotherapy devices are equipped with an Electronic Portal Imaging Device (EPID) system which is located on opposite side of the machine’s head. EPID system is often used to setting up the position verification during or between radiotherapy sessions.
Mohammadi, Mahdi, Haghparast, Abbas
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Characteristics ofin vivoradiotherapy dosimetry
The British Journal of Radiology, 2009The recent discussion and debate about the use of in vivo dosimetry as a routine component of the radiotherapy treatment process has not included the limitations introduced by the physical characteristics of the detectors. Although a robust calibration procedure will ensure acceptable uncertainties in the measurements of tumour dose, further work is ...
C R, Edwards, P J, Mountford
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Midline Dose Algorithm for in Vivo Dosimetry
Medical Dosimetry, 1994The high level of accuracy required in radiotherapy treatment dosimetry makes necessary good treatment quality control. The common way is the use of in vivo dosimetry equipment that allows the direct measurement of dose delivered to the patient. Control of homogeneity and constancy of the incident beam on the patient can be achieved directly by means ...
J A, Terrón +4 more
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Implementation of in vivo dosimetry with epigray
Physica Medica, 2013Background EPIGRAY allows in vivo dosimetry with portal imaging. The Medical Physics Unit of CORT37 wishes to implement this technique. Objectives The objective is to test the validity of Results given by EPIGRAY and to determine the limitations of computation and the ability to detect errors.
F. Chaumet, O. Bleuse
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