Now playing · 02 Imaging
Exposure vs mAs and kVp
X₂ = 6.531 mR
X
2
=
X
1
⋅
m
A
s
2
m
A
s
1
(
k
V
p
2
k
V
p
1
)
n
X_2 = X_1\cdot\frac{\mathrm{mAs}_2}{\mathrm{mAs}_1}\left(\frac{\mathrm{kVp}_2}{\mathrm{kVp}_1}\right)^n
X
2
=
X
1
⋅
mAs
1
mAs
2
(
kVp
1
kVp
2
)
n
Rule of thumb: exposure ∝ mAs × (kVp)^n.
Laser