Distortion

Question 1

What is distortion?

Answer 1

any geometric misrepresentation of an anatomic structure on an IR

Question 2

What are the two types of distortion?

Answer 2

size and shape

Question 3

What is size distortion?

Answer 3

its pretty much magnification

Question 4

What causes size distortion?

Answer 4

excessive OID and insufficient SID

increased OID = increased size distortion
decreased SID = increased size distortion

both make the body part seem bigger than it actually is

Question 5

What is shape distortion?

Answer 5

elongation and foreshortening

Question 6

What is elongation?

Answer 6

It makes the body part seem longer than it really is

Question 7

What causes elongation?

Answer 7

improper tube, part, or IR angulation/alignment

Question 8

what is foreshortening?

Answer 8

when an anatomic structure appears shorter than it really is

Question 9

What causes foreshortening?

Answer 9

caused by improper tube, part, or part

Question 10

What kind of shape distortion is caused by angulation against the main axis of a part?

Answer 10

foreshortening

Question 11

What kind of shape distortion is caused by angulation along the long axis of the part?

Answer 11

elongation