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- W2047990094 abstract "The protocol for image intensifier (II) quality assurance recommended by the UK Hospital Physicists' Association (HPA) and the UK Department of Health and Social Security has been adapted for use in New Zealand for assessment of such systems. Test objects were constructed at the National Radiation Laboratory to match the specifications of those recommended by the HPA. Over 100 individual surveys have been made and, in a few cases, machines have been surveyed several times. Results are summarized in terms of key parameters: II input dose rate, low-contrast detectability, contrast-detail performance and limiting resolution. These are given as mean and standard deviation, and also as good, average or poor. Video waveforms, conversion factors and modulation transfer functions have also been determined on a number of systems. In several cases, video voltages were found to be seriously maladjusted." @default.
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- W2047990094 date "1988-05-01" @default.
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- W2047990094 title "Performance assessment of X-ray image intensified television fluoroscopy systems in New Zealand" @default.
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- W2047990094 doi "https://doi.org/10.1259/0007-1285-61-725-393" @default.
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