Optimizing the image Flashcards
1
Q
motion
A
destroys resolution
2
Q
distortion
A
foreshortening or elongation of a body part due to angulation
3
Q
magnification
A
if an object is raised above the image receptor, the object will be magnified
4
Q
Scattered radiation
A
radiation is scattered outside the collimated area
5
Q
Extrafocal radiation
A
parts of the anatomy are clearly visible outside of collimation
6
Q
Umbra
A
the portion of the x-ray image that is sharp and clearly collimated
7
Q
Penumbra
A
the outside edge or shadow where the film has been imperfectly collimated
8
Q
Parallel grid
A
absorbs the radiation at the edges of the image
9
Q
focused grid
A
allows the x-rays to pass through to the outer edges of the imge
10
Q
A
