The primary factor that affects the density on the image is: ...

[dakota nelson]

The primary factor that affects the density on the image is:
 
 time
  kVp
  focal spot
  mAs

Question 2

Which portion of the thoracic spine is poorly visualized on the lateral t-spine projection?
 
 T4-8
  T8-T12
  T1-12
  T1-4

[perkiness]

Answer to Question 1

mAs

Rationale: Milliamperage-seconds, mAs, contributes to the overall blackness of the image. It represents the quantity of radiation produced.

Answer to Question 2

T1-4

Rationale: The upper thoracic vertebrae will be difficult to visualize on a true lateral t-spine due to the thickness and superimposition of the shoulders.