Author Question: When higher mAs values must be applied to thicker parts, what other control panel option should be ... (Read 38 times)

jeatrice · **on:** Jul 17, 2018

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 · **Reply #1 on:** Jul 17, 2018

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.