Positioning Principles

Question 1

Radiographs are evaluated by a definable standard called:

Answer 1

Radiographic criteria

Question 2

What are the five basic radiographis criteria?

Answer 2

1. Structures shown
2. Positioning
3. Collimation and CR
4. Exposure criteria
5. Image Markers

Question 3

Describe “structures shown” in relation to radiographic criteria.

Answer 3

The anatomic parts and structures visualized on a radiograph.

Question 4

Describe “positioning” in relation to radiographic criteria.

Answer 4

Placement of body part in relationship to IR.

Positioning factors important for projection.

Question 5

Describe “Collimation and CR” in relation to radiographic criteria.

Answer 5

Describes how collimation borders should be seen.
Location of CR
Center of collimation.

Question 6

Describe “Exposure Criteria” in relation to radiographic criteria.

Answer 6

Describes how technique can be evautated for optimum exposure of body part.
Motion.

Question 7

Describe “Image markers” in relation to radiographic criteria

Answer 7

Patient side markers (R or L)
Time markers (as needed)