final mix Flashcards
1
Q
spatial Resolution
A
How well radiographs reveal small objects
2
Q
Penumbra
A
Unsharpness
3
Q
What problems plaque all radiographic images
A
Unsharpness
Distortion
Magnification issue
4
Q
umbra
A
no blur
5
Q
penumbra
A
blur
6
Q
What minimizes the unsharpness
A
Long source object distance
short- object film distance
Small focal point
Limiting patien movement
7
Q
Magnification =
A
Image size/ object size
8
Q
Magnification%=
A
SID/SOD
SID= Source to image distance
SOD= Source to object distance