Fluro
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| The fluoroscopic mA range is _____ to _____. | 0.5 to 5.0 mA
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| Modern image intensifiers are capable of increase image brightness ______ to ______ times. | 5,000 - 8,000
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| The input fluorescent screen _______ x-ray photons and _____ light photons. | absorbs, emits
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| The photocathode ______ light photons and ____ electrons. | absorbs, emits
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| Electrostatic lenses are used to ______ and ____ electrons. | accelerate, focus
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| The output fluorescent screen ______ electrons and ____ light photons. | absorbs, emits
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| Photoemissive materials absorb light photons and emit electrons in a process called _____________. | Photoemission
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| __________ _________ are a series of charged electrodes located inside the glad envelope of the image intensification tube. | Electrostatic lenses
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| Total brightness gain is determined by ____________ and ________________. | Minification gain, flux gain
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| __________ _________ is an increase in brightness or intensity. | Minification gain
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| __________ _______________ is a measurement of the increase in light photons due to conversion efficiency of the output screen. | Flux gain
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| The primary limitation on most fluoroscopic resolution is the ________ ______ _________ of the video monitor. | 525-line raster
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| Fluoroscopic video cameras used a _________ or _______ or a _______________. | Vidicon, Plumbicon tube, CCD
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| Vidicon tubes use ____________ ______________. | Antimony Trisulfide
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| Plumbicon tubes use ________ __________. | Lead oxide
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| _______ and _______ film formats are used for cine film imaging. | 16 mm, 35 mm
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| _________ is the edge distortion problem in image intensification tubes. | Vignetting
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| The charge of the electrostatic lenses is ________. | Negative
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| The anode is ____________ charged and is normally supplied with about ____ kv. | Positively, 25
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| Minification gain is calculated as _______ _____ ________ divided by _________ ________ ________. | Input screen diameter, output screen diameter
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| Flux gain is calculated as number of ______ ___ _______ divided by number of _________ _________ __________. | Output light photons, Input xray photons
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| Sensitivity to low light and used in night vision is attributed to ______. | Rods
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| Sensitivity to light, responsible for daylight vision is attributed to _______. | Cones
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| Daylight vision. | Phototopic
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| Night vision | Scotopic
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| Cones are most sensitve to _________ light. | Yellow
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| Rods are most sensitive to ________ light. | Green
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| The input fluorescent screen is coated with ________ _________. | Cesium Iodide
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| Th electrostatic lenses are a series of ________ __________ located inside the glass envelope of the intensification tube. | charged electrodes
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| The intensification tube's anode is ________ charged and supplied with about ____ kV. | Positively, 25
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| The output fluorescent screen is a silver-activiated, _____ __________ ______ phosphor | Zinc-Cadmium sulfide
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| Automatic brightness control does what? | Maintains the brightness of the image by automatically adjusting exposure factors acording to subject density and contrast.
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| The most common solution for quantum mottle is? | Increase mAs
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| The function of the image intensfier is? | To absorb x-ray photon and emit light photons.
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