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Artifacts
N/A
20
Physics
Professional
04/05/2013

Additional Physics Flashcards

 


 

Cards

Term
any irregularity on an image that is not caused by the proper shadowing of tissue by the primary beam
Definition
artifact
Term
three classifcations of artifacts
Definition
storage and handling
exposure
processing
Term
___ artifacts appear as higher optical density
Definition
processing artifacts
Term
types of roller marks
Definition
guide shoe marks
dirty rollers
wet pressure sensitization
Term
occur when guide shoes are sprung or incorrectly positioned
Definition
guide shoe marks
Term
dirty rollers can cause:
Definition
emulsion pick off, gelatin buildup, or sludge deposits
Term
type of processing artifacts that results from incorrect/inadequate processing
Definition
chemical fog
Term
a processing artifact that is produced in the development tank caused by dirty rollers
Definition
wet pressure sensitization
Term
image fog
pressure marks
light/radiation fog
hyporetention
static
kink marks
Definition
types of handling/storage artifacts
Term
caused by temp or humidity being too high
Definition
image fog
Term
occurs if film is stacked too high
Definition
presure marks
Term
white light leaks causing streak like artifacts of increased OD
Definition
Light/radiation fog
Term
a yellow brown stain that appears after a long storage period due to not all of residual thiosulfate being removed
Definition
hyporetention
Term
caused by a buildup of electrons in the emulsion esp during winter or low humidity
three types
Definition
static
Term
caused by incorrect or rough handling
appear semi circular in shape
Definition
kink marks
Term
artifacts associated with how the radiographer conducts the exam
Definition
exposure artifacts
Term
artifacts associated with how the radiographer conducts the exam
Definition
exposure artifacts
Term
incorrect screen film match
poor screen film contact
warped cassette
incorrect positioning of grid
patient preparation
Definition
types of exposure artifacts
Term
mismatching of film and screens ___ patient dose
Definition
increases
Term
poor screen film contact can cause a ___
Definition
lack of detail
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