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Basic
dosimetric
quantities
(
)
kg
J
mass
absorbed
ord
transferre
energy
radiation
( ) ( )
∑
+
− =
Q
R R
nonr
ε
energy transferred
Q: changes
in rest
mass
If (m ---> E), Q>0
If (E ---> m), Q<0
e-
h
ν
e-
h
ν
R
in
R
out
net energy transferred
r
u
tr
n
tr
R
−ε=ε
u out
u in
tr
collision kerma
absorbed dose
kerma
(Attix 1986)
( ) ( ) ( ) ( )
∑
+
− +
− =
Q
R R R R
c out
c in
u out
u in
ε
energy imparted
(absorbed)
radiant energy of ALL uncharged particles leaving the volume