ARRT registry review of Image Acquisition and Evaluation
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| As part thickness decreases, the kilovoltage ____________. | show 🗑
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| If 200 mA has been selected for a particular exposure, what exposure time would be required to produce 20 mAs? | show 🗑
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| If insufficient backup time has been selected for AEC, the image would be _________. | show 🗑
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| show | It is less magnified. (Lange Q&A pg. 242)
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| Name 2 ways to decrease motion, which improves recorded detail. | show 🗑
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| show | Vertical, or upright, to avoid pressure marks. (Lange Q&A pg. 236)
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| show | A graphic representation of pixel value distribution. (Lange Q&A pg. 247)
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| show | Spatial resolution. (Radiography Prep Book pg. 299)
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| What does PACS stand for? | show 🗑
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| If a chest x-ray is taken with an mA of 100 and the radiologist wanted it repeated with an mA of 200, what would happen to the density of the image? | show 🗑
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| show | There would be no change. (Radiographic Exposure Principles & Practice pg. 182)
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| An image was taken with a focal spot size of .3-mm and for the next image it was taken with a focal spot size of .5-mm. What effect does this have on recorded detail? | show 🗑
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| A foot x-ray was taken on an 8x10 collimation field size and on the next image was taken on a n 11x14 collimation field size. What effect does this have on contrast? | show 🗑
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| What effect does OID have on contrast if it is decreased? | show 🗑
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| What effect does developer temperature have on density if the temperature is decreased? | show 🗑
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| What effect does grid ratio have on recorded detail is the grid ratio is increased? | show 🗑
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| What effect does filtration have on distortion if filtration is decreased? | show 🗑
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| What 5 factors, if increased, would have an effect on density? | show 🗑
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| What two factor have an effect on distortion? | show 🗑
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| show | The mAs is fixed and the kV is increased as part thickness increases. (Radiography Prep book pg. 351)
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| show | Perstaltic activity, muscle spasms, and heart action. (Radiography Prep book pg. 309)
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| What is the best way to minimize involuntary motion? | show 🗑
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| show | Because they react to x-ray photons more efficiently and possess greater speed. (Radiography Prep Book pg. 312)
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| The more fluorescent light each phosphor emits, the _________ its Conversion Efficiency (CE) and speed. | show 🗑
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| What is the inverse square equation? | show 🗑
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| What is the density maintenance formula? | show 🗑
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| What is an example of a stationary grid? | show 🗑
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| What does filtration do? | show 🗑
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| show | It is used for anatomic parts having very different thickness/absorption properties. It is also used to "balance" tissue densities and improves visualization of all tissues. (Radiography Prep Book pg. 330)
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| When is the Anode Heel Effect most emphasized? | show 🗑
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