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CR Review #2
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It is suggested grid frequencies (greater or less) than 150 lines per in. be used in CR imaging.
greater
A wavy artifact caused by grid lines running parallel to the laser scanning motion is called:
Moire Pattern
Quantum Mottle occurs from (too much or too low) of mAs.
too low
(T or F) Automatic rescaling means images are produced with uniform density & contrast regardless of the amount of exposure.
True
CR (digital) imaging, is said to have a (narrow or wide) dynamic range.
wide
(T or F) High(er) kVp values can be used in CR imaging, as long as the technologist stays within the penetration range.
True
(T or F) It is not acceptable to select a body part or position different from that actually being performed simply because it looks better.
True
The smaller the laser beam, the (greater or less) the resolution.
greater
Distance exists between the surface of the plate & the PM tube results in (increase or decrease) in resolution?
decrease
The thinner the phosphor layer; the (higher or lower) the image resolution.
higher
The bit depth will be a factor in determining the quality, specifically the (density or contrast) of the image.
contrast
The number of bits per pixel, that define the shade of each pixel, is known as the ____ _______.
Bit Depth
__________ a signal is the assignment of a numeric value to each light photon.
Digitizing
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