advanced imaging digital 3 of 3
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| Indirect DR | two part process, photons are converted to light and light to digital signal
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| Direct DR | incoming x-ray photons are converted to an electric signal
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| What is the base layer of the PSP? | support layer
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| Conductor layer of the PSP does what? | ground the plate and absorb light
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| The light shield layer of the PSP does what? | prevents light from erasing data or decreasing spatial resolution
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| Is there an image intensifier in CR? | no
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| Where do x-ray photons interact with CR? | the PSP
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| How quickly is an image lost with CR? | a latent image will loose 25% of its energy in 12 hours
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| How is resolution controlled in processing with CR? | by the laser size
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| LUT | look up table, pre-existing histogram for a specific body part
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| Kodak exposure index range: | 1,800-2,000
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| Fuji S number range: | 150-250
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| Agfa relative exposure value range: | 1.9-2.2
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| What is the useful range for the D log E curve? | .25-2.5
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| Factors that produce low contrast with CR | high kVp, no grid, poor PBL, inc. part thickness
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| What is an advantage of full-field digital mammography? | improved contrast resolution
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