RAD 245- Lateral Lumbar- Chapter 9- Module 3

Question 1

On a 8 x 14 cassette, where is the CR centering?

Answer 1

Perpendicular CR at MCP at level of 1.5 inches Superior to the Illiac Crest

Question 2

On a 14 x 17 cassette, where is the CR centering?

Answer 2

Perpendicular CR to MCP at the level of the Illiac Crest

Question 3

What is detected when the left and right posterior surfaces of the vertebral bodies are not demonstrated superimposed (one is anterior)?

Answer 3

Rotation (Hard to tell which is rotated, see which is more magnified. That will be the one farthest away from the IR)

Question 4

What should be placed under the patient to prevent sagging of the lumbar column (this prevents closed disk spaces and distorted vertebral bodies)?

Answer 4

Sponge

Question 5

What demonstrates AP vertebral mobility?

Answer 5

Flexion and Extension projections