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Image Acquisition and Evaluation

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Distortion can be caused by what? Q239 pg229   show
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How often are radiographic equipment collimators required to be evaluated? Q222, pg 226   show
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IRs frequently have a rear lead-foil layer that functions to do what? Q219, pg 226   show
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show Phosphorescence  
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show To even out widely differing tissue densities  
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Boxes of film stored in too warm an area may be subject to what kind of artifact? Q204, pg 224   show
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The line-focus principle expresses the relationship between what 2 things? Q215, pg 225   show
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What happens to contrast as the grid ratio is decreased?   show
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show Blur  
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show mAs must be increased by 30%  
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If an anatomic structure appears smaller on the IR than its actual size, it is?   show
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show A decrease in contrast  
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The relationship between the height of a grid's lead strips and the distance between them is referred to as?   show
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Due to the anode heel effect, the intensity of the x-ray beam is greatest at which end of the beam?   show
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The processing algorithm represents what?   show
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In digital imaging, as DEL size decreases, spatial resolution does what?   show
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show Analog Image  
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show A Caliper  
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Windowing of a digital image determines what?   show
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show Facilitate transportation through the scanner/reader  
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The intensity of ionizing radiation decreases as the distance from the source?   show
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show Decreased Density  
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Which device is used to compensate for variations in patient anatomy?   show
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show Decrease  
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The reduction in x-ray photon intensity as the photon passes through material is known as what?   show
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Would you increase or decrease technique for Emphysema?   show
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The absorption of useful radiation by a grid is called?   show
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show ADC  
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show Cathode End  
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The direction of electron travel in the x-ray tube is?   show
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Created by: agerling
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