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Patient Dose Received During Fluoroscopy
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absorption Albrecht amplitude aperture bandwidth bar pattern barium meals beam BOTDEN camera tube cent components correlation density detail Diagnostic Radiologic diameter distribution dose rate effect electronic equation evaluation experimental experiments exposure factor FEDDEMA field film graininess filter fluctuations fluoroscopy focal spot tube Fourier transform image quality input screen instrument integration kinescope light lp/mm luminance magnification MARHOFF means measured method modulation transfer function monitor MORGAN Moseley mR/m noise figure observer obtained optical transfer function output parameters patient photomultiplier picture Plumbicon problem quantum mottle quantum noise radiation radiographic mottle radiologic image radiologist recording resolution roentgen ROIZEN ROSSMANN scanning SCHOBER screen mottle shown in Figure shows signal signal-to-noise ratio slit spatial frequency spectra stereo structure mottle techniques television chain television system temporal test object test pattern transmission unsharpness values vidicon visual voltage Wiener spectrum x-rav x-ray image intensifier x-ray tube