Image Acquisition
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| The component of a CR image plate that records the radiologic image is | photostimulable phospor
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| the luminescent light emitted by the PSP is transformed into the image seen on the CRT by the | ADC (analog to digital converter)
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| SId affects recorded detail in which of the following ways? | directly related
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| Grid interspace material is made up of what? | Aluminum and plastic fiber
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| In a duration of 0.05 second was selected for an exposure what mA would be necessary to produce 30 mAs? | 600 mA
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| Unopened boxes of radiographic film should be stored away from radiation and | in the vertical position
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| The term windowing describes the practice of | changing the image brightness and/or contrast scale
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| foreshortening can be caused by | the radiographic object being placed at an angle to the IR
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| what does not affect the exposure rate of the primary beam? | field size
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| a patient with Congestive heart failure has to have what done to the technique for a PA chest Xray? | Increase
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| Misalignment of the tube-part-IR relationship results in | shape distortion
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| the direction of electron travel in the xray tube is | cathode to anode
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| for the same FOV the spatial resolution will be improved using | a larger matrix
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| which of the following technical change would best serve to remedy the effect of very dissimilar tissue densities | high KV exposure factors
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| the absorption of useful radiation by a grid is called | grid cutoff
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| during CR imaging, the latent image present on the PSP is changed to a computerized image by the | ADC
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| How are mAs and patient dose related? | directly
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| the reduction in xray photon intensity as the photon passes through material is termed | attenuation
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| diagnostic xrays are generally associated with | high frequency and short wavelength
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| At what portion of the xray beam is the effective focal spot the largest? | at the cathode end
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| the intensity of ionizing radiation decreases as | distance from the source of radiation increases
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| what is the purpose of the thin layer of lead that is often location in the rear portion of the IP | to prevent scatter radiation
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| the purpose of the electroconductive layer of the CR PSP plate is to | facilitate transportation through the scanner/reader
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| the xray image seen on the computer display monitor is a | digital image
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| the accessory used to measure the thickness of body parts in order to determine optimal selection of exposure factors is the | caliper
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| a radiograph made with a parallel grid demonstrates decreased density on its lateral edges. this is most likely due to | decreased SID
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| a particular mAs value, regardless of the combination of the mA and time, will reproduce the same radiographic density, this is a statement of the | reciprocity law
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| the relationship between the height of a grid's lead strips and the distance between them is referred to as grid | ratio
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| because of the anode heel effect the intensity of the xray beam is greatest along the | cathode end of the beam
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| in digital imaging, TFT DEL size is related to | spatial resolution
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