MiPACs Flashcards
most image processing is ______
hidden from user
image enhancement includes
- brightness/contrast
- sharpening/edge enhancement
- task specific filters
- noise reduction/smoothing
- colorization
- image inversion
enhancements are not _____; what may benefit one diagnostic task may ____ another
universal; limit
caries are best detected with a ______ and ______ image
slightly darker, slightly higher contrast
periodontal bone loss/calculus tends to be best visualized with a _________
slightly brightened image
enhancement to highlight structural edges
sharpening/edge enhancement
caution: edge enhancement/filters can create ____ that look like _____ caries/pathology
artifacts, caries/other pathologies
opposite of sharpening, can create a more pleasing image but limited evidence of diagnostic benefit
noise reduction/smoothing
specific color assigned to each grayscale value, does not contribute to diagnostic benefit
pseudocolor/colorize
in inversion filters, ____ becomes white, ___ becomes black
black, white
inversion leads to ____ diagnosis
worse
underexposed is too ___
light
overexposed is too ____
dark
image preprocessing automatically adjusts overall image brightness to acceptable levels
digital imaging
what are clues that digital image overexposure
- radiograph slightly darker
- portions of the tooth may appear “burnt out”/missing
what are clues that digital image underexposure
- grainy
- noise
noise is the result of ________ to properly expose the ____ and get a clear image
too little radiation, receptor
clinically, goal is to balance ______ with an acceptable level of noise
lose dose/exposure, noise
some noise is…
okay
if details like DEJ, PDL are lost, there is…
too much noise
