Distortion

Question 1

Foreshortening can be caused by

Answer 1

Angulation of the long axis of the part with respect to the IR.

Question 2

Aligning the x-ray tube, anatomy, and IR so they are parallel reduces

Answer 2

Shape distortion

Question 3

Tube angulation causes

Answer 3

Elongation of the part

Question 4

Decreasing the SID will — size distortion

Answer 4

Increase magnification

Question 5

Increasing the OID will — size distortion

Answer 5

Increase magnification

Question 6

What causes inherent distortion

Answer 6

Structures within the three dimensional body lie in different planes.
Also the three dimensional shape of solid structures rarely coincide with the shape of the divergent beam.

Question 7

Shape distortion is caused by

Answer 7

Improper alignment of the tube, part, and IR

Question 8

Size distortion or magnification is caused by

Answer 8

Too great an OID

Too short an SID

Question 9

Focal spot blur is caused by

Answer 9

The use of a large focal spot

Question 10

Using a 48 inch SID how much OID must be introduced to magnify an object 2 times?

Answer 10

24

Question 11

If you are unable to achieve a short OID, what do you do to minimize magnification

Answer 11

Longer SID