Results 261 to 270 of about 25,674 (297)

Chamber replacement correction in absorbed dose calibrations

Medical Physics, 1992
The corrections in absorbed dose calibration for the replacement of the medium by an ionization chamber shows some discrepancies. The calibration procedures is discussed. (AIP)
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Physical characteristics of dose calibrator.

Radiation medicine, 1997
Physical characteristics of a dose calibrator CRC-30BC (Capintec, Mt. Vernon, N.Y.) was studied in the present study. We performed repeated measurements of the radioactive sample, changing its position in the well, its volume, and its radioactivity. In terms of the vertical dependence, the highest activity was obtained 7-8 cm from the bottom of the ...
N, Yoshioka, Y, Inoue, T, Watanabe, T, Oritate, K, Yoshikawa, Y, Sasaki   +5 more
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EB dose calibration for 10MeV linear accelerator

Radiation Physics and Chemistry, 2002
Abstract The National Institute of Standards and Technology Gaitherburg USA has done in co-operation with INCT Warsaw the EPR dose measurements for two INCT 60 Co irradiators using l-alanine standard pellets as dosimeter medium. In the study the comparative EPR measurements of doses up to 40 kGy have been done using l-alanine powder with 60 Co ...
H.B Owczarczyk, W Migdal, W Stachowicz
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Absolute dose calibration of EBT3 Gafchromic films

Journal of Instrumentation, 2017
Radiochromic films are a commercial product available in a large number of different types. They can be used in a wide range of doses and fluence for different radiation types. The application in different fields such as photon and ion radiotherapy, industrial irradiations for modification of materials, sterilization and radiation hardness, makes very ...
Campajola L., Casolaro P., Capua F. D.
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Dose Quantities in Radiation Protection and Dosemeter Calibration

Radiation Protection Dosimetry, 2001
Dosimetric concepts and the definition of dose quantities for use in radiation protection were defined by the ICRP and the ICRU. Three types of quantities are of relevance for radiation protection purposes: basic physical quantities, protection quantities, and operational quantities.
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Calibration of new high dose rate sources

Medical Physics, 2002
The increased popularity of high dose rate (HDR) brachytherapy in the treatment of neoplastic disease has resulted in the introduction of new or redesigned sources by various manufacturers. In order to provide accurate clinical dosimetry, accurate calibration of these sources is required. In this work, two new sources are calibrated with the standard,
K. E. Stump, L. A. DeWerd, J. A. Micka, D. R. Anderson   +3 more
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Calibration of a NaI Spectrometer in Dose Equivalent Quantities

Health Physics, 1987
A sodium iodide spectrometer was calibrated in terms of dose equivalent quantities. The detector was irradiated with a known dose (dose equivalent) at 12 ISO x-ray qualities between 33 keV and 248 keV. The method of calibration is based on the relationship between the considered dose equivalent delivered by each x-ray quality and the linear combination
C, Austerlitz, G, Drexler, P, Nette
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Absorbed Dose Calibration of an Ion Chamber

Nature, 1963
SINCE 1953 the official unit for the absorbed dose of X- and other ionizing radiation received by biological material has been the rad, defined as “ … the energy imparted to matter by ionizing particles per unit mass of irradiated material at the place of interest …. ”, 1 rad being 100 ergs/gm (ref. 1).
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A calibrated dose dispenser for gaseous 133Xe.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 1976
A device that permits accurate dispensing of individual doses of 133Xe from multicurie ampuls is described. The advantages include economy, flexibility in dose selection, and radiologic safety.
R F, Gutkowski, N H, Horwitz, H J, Dworkin   +2 more
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EVALUATION OF RADIOISOTOPE DOSE CALIBRATORS

Clinical Nuclear Medicine, 1982
Ralph A.A. Kahn, Raleigh F. Johnson, William R. Day, Dennis J. Dornfest   +3 more
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