Which scale of contrast is described as having many shades of ...

[evelyn o bentley]

Which scale of contrast is described as having many shades of gray with subtle differences?
 
 mid scale
  short scale
  high scale
  long scale

Question 2

An abnormal collection of air in the pleural cavity is:
 
 pleural effusion
  hemothorax
  pneumothorax
  pneumonia

[kkenney]

Answer to Question 1

long scale

Rationale: Long scale or low scale contrast is defined as many shades of gray with subtle differences.

Answer to Question 2

pneumothorax

Rationale: Pneumothorax is an abnormal amount of air in the pleural cavity. This could be caused by trauma, surgical procedure such as a biopsy or line placement. A pneumothorax that gets too big can potentially collapse the lung.