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Rad Imaging Chapter 25-27

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Medicine - Radiology

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Cards in this deck(29)
The dynamic range densities controlled by the _____ is known as the window width.
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Differences in adjacent shades of grey or density differences are referred to as _____ in image contrast.
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The dynamic range or range of brightness controlled by the _____ is known as the window level.
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What two factors equal detail in radiographic imaging? _____ and contrast.
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A short scale of contrast is equivalent to _____ contrast.
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The D log E curve is affected by changes in the _____, which alters the contrast.
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Higher contrast in an image is associated with a _____ straight line portion of the curve.
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Subject contrast is determined by the patient and is the difference in _____ densities.
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Film contrast is dependent on four factors: intensifying screens, film density, slope of D log E curve, and _____.
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A long scale of contrast is equivalent to _____ contrast.
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The steeper the slope, the _____ the contrast in the image.
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DR contrast factors include LUT, kVp, and _____.
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A higher kVp results in a _____ histogram.
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Higher kVp _____ the absorption of x-rays in the body.
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A change in density results in a change in _____.
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A decrease in collimation leads to an increase in scatter and a _____ scale of contrast.
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For non-grid radiography, do not exceed _____ kVp.
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kVp and contrast are not directly related in _____ radiography.
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The anode heel effect has no effect on _____.
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Beam restriction has a direct effect on _____.
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An increase in SID _____ IR exposure.
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Changes in SID also affect _____.
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Filtration and contrast are _____ related.
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Filtration reduces patient dose and _____.
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Grids are directly related to _____.
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The symbol for the contrast improvement factor is _____.
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Grids provide a k factor of _____.
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In digital systems, contrast is determined by the histogram and _____.
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Contrast is displayed as various _____ depth values.
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