Formulas Flashcards
1
Q
Formula for MAs
A
MAs = ma x sec(time)
2
Q
Formula for ma
A
Ma = MAs / sec
3
Q
Formula for sec
A
Sec= MAs/ ma
4
Q
Inverse square law formula
A
I1/I2= (D2)^2\ (D1)^2
5
Q
Formula for direct square law
A
MAs1/ mas2 = (D1)^2/ (D2)^2
6
Q
Kvp and beam intensity formula
A
Intensity1/Intensity 2= (kvp1)^2 / (Kvp2)^2
7
Q
15% rule formula
A
Increase Kvp by 15% = Kvp x 1.15
Decrease Kvp by 15% = Kvp x 0.85
8
Q
Formula for table top to grid conversation factor formula
A
Grid x MAs
9
Q
5:1
A
2
10
Q
6:1
A
3
11
Q
8:1
A
4
12
Q
10:1
A
4
13
Q
12:1
A
5
14
Q
16:1
A
6
15
Q
Changing one grid ratio to a different grid to determine new MAs formula
A
MAs1 / MAs 2= GCF 1/ GCF 2
