Radiograph Calculations Flashcards
1
Q
What is the calculation for mAs, mA and s?
A
mAs
———
mA x s
2
Q
What should you do if you increase the kV by 10 to keep the same exposure factor?
A
Half the mAs
3
Q
What should you do if you decrease the kV by 10 to keep the same exposure factor?
A
Double the mAs
4
Q
What is the calculation needed when using a grid?
A
Multiply the mAs by the grid factor
5
Q
What is the inverse square law?
A
New mAs = New FFD2
—————- x Old mAs
Old FFD2
