The effects of x-ray beam hardening on detective quantum efficiency and radiation dose
نویسندگان
چکیده
منابع مشابه
Detective quantum efficiency dependence on x-ray energy weighting in mammography.
An evaluation of the dependence of detective quantum efficiency (DQE) on the incident energy spectrum has been made for mammography. The DQE dependence on the energy spectrum has been evaluated for energy-integrating detectors, photon-counting detectors, and detectors that measure the energy of each photon. To isolate the effect of the x-ray energy spectrum the detector has been assumed to be i...
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15 صفحه اولDetermining The Detective Quantum Efficiency (DQE) Of X-Ray Detectors In Clinical Environments
According to Health Canada, dental and medical radiography accounts for more than 90% of total man-made radiation dose to the general population. Ensuring patients receive the health benefits of diagnostic x-ray imaging without use of higher radiation exposures requires knowledge and understanding of the detective quantum efficiency (DQE). Currently, the DQE is not measured in clinics because i...
متن کاملModeling the frequency-dependent detective quantum efficiency of photon-counting x-ray detectors.
PURPOSE To find a simple model for the frequency-dependent detective quantum efficiency (DQE) of photon-counting detectors in the low flux limit. METHODS Formula for the spatial cross-talk, the noise power spectrum and the DQE of a photon-counting detector working at a given threshold are derived. Parameters are probabilities for types of events like single counts in the central pixel, double...
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ژورنال
عنوان ژورنال: Journal of X-Ray Science and Technology
سال: 2011
ISSN: 0895-3996
DOI: 10.3233/xst-2011-0310