Image Critique Flashcards
What is density?
the overall blackness on a film
Major controlling factor of density?
mAs
If you increase beam restriction (collimation), density will:
decrease
If you increase body habitus, density will:
decrease
If you increase SID, density will:
decrease
What is contrast?
differences in densities on a film
Mjor controlling factor of contrast?
kVp
If you increase body habitus, contrast will:
decrease
If you increase beam restriction (collimation), contrast will:
increase
What is brightness?
measurement of luminance of a monitor
Major controlling factor of brightness?
Window Level
Brightness is the opposite of ______
density
Increasing window level, _______ brightness
decreases
What is grayscale?
the differences in density on the monitor (or digital image)
Major controlling factor of grayscale?
Window Width
The smaller the window level, the _____ the contrast
higher
What is recorded detail?
sharpness (or image resolution)
Major controlling factor of recorded detail?
Focal Spot Size
Increasing body habitus, _______ deatil
decreases
Increasing OID, _______ detail
decreases
Increasing SID, _______ detail
increases
What is distortion?
any misrepresentation of the true size or shape of an object
What are the 2 types of distortion?
size and shape
SIze distortion is caused by:
excessive OID
