Principles and Indications

Question 1

posteroanterior chest radiograph

Answer 1

• XR beam from back-to-front

- chest pressed against cassette

Question 2

anteroposterior chest radiograph

Answer 2

• XR beam from front-to-back

- back pressed against cassette

Question 3

lateral chest radiograph

Answer 3

• XR beam from side-to-side

- side pressed against cassette

Question 4

radiograph film densities/appearances:

• air =
• fat =
• bone =
• metal =
• calcium =
• organs, muscles, soft tissues =

Answer 4

• black
• black
• white
• white
• white
• shades of gray