When higher mAs values must be applied to thicker parts, what ...

[jeatrice]

When higher mAs values must be applied to thicker parts, what other control panel option should be altered?
 
 focal spot size
  time
  Reciprocity Law
  back up timer

Question 2

For bilateral AP weight-bearing feet, how is the CR directed?
 
 15 degrees cephalic
  5 degrees cephalic
  perpendicular
  20 degrees cephalic

[ngr69]

Answer to Question 1

focal spot size

Rationale: There are two focal spot sizes to choose from. Small focal spots are most ideal and result in sharper recorded detail, but with increased mAs values, increased heat production will result, therefore a larger focal spot should be selected.

Answer to Question 2

15 degrees cephalic

Rationale: 15 degrees cephalic is usually needed to position the tube allowing the patient to stand.

[jeatrice]

TYSM

[marict]

Gracias!