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adv img digital 3

advanced imaging digital 3 of 3

QuestionAnswer
Indirect DR two part process, photons are converted to light and light to digital signal
Direct DR incoming x-ray photons are converted to an electric signal
What is the base layer of the PSP? support layer
Conductor layer of the PSP does what? ground the plate and absorb light
The light shield layer of the PSP does what? prevents light from erasing data or decreasing spatial resolution
Is there an image intensifier in CR? no
Where do x-ray photons interact with CR? the PSP
How quickly is an image lost with CR? a latent image will loose 25% of its energy in 12 hours
How is resolution controlled in processing with CR? by the laser size
LUT look up table, pre-existing histogram for a specific body part
Kodak exposure index range: 1,800-2,000
Fuji S number range: 150-250
Agfa relative exposure value range: 1.9-2.2
What is the useful range for the D log E curve? .25-2.5
Factors that produce low contrast with CR high kVp, no grid, poor PBL, inc. part thickness
What is an advantage of full-field digital mammography? improved contrast resolution
Created by: annaluz87