Panasonic PT-DZ12000U

INTERNAL DOSIMETRY
Effective Half-Life
effrbrb
t = t x t / (t + t )
r
where; t = radioactive half-life
b
t = biological half-life
Effective Removal Constant
eff r b
ë = ë + ë
r½
where; ë = decay constant = 0.693 / t
bb
ë = biological removal constant -0.693 / t
Calculating Internal Dose (ICRP 30)
50 S
H (T7S) = (1.6E-10)U SEE(T7S)
50
H = 50 year dose equivalent commitment in sieverts
where SEE is the Specific Effective Energy modified by a quality
factor for radiation absorbed in the target organ (T) for each
transformation in the source organ (S) expressed in MeV/g.
T
SEE = 3YCECAFCQ/M
where;
Y = yield of radiations per transformation
E = average energy of the radiation
AF = absorbed fraction of energy absorbed in the target organ
(T) per emission of radiation in the source organ (S)
Q = quality factor
T
M = mass of the target organ
S
U = number of nuclear transformations in the source organ
(S) during the time interval for which the dose is to be
calculated
48
INTERNAL DOSIMETRY
Effective Half-Life
effrbrb
t = t x t / (t + t )
r
where; t = radioactive half-life
b
t = biological half-life
Effective Removal Constant
eff r b
ë = ë + ë
r½
where; ë = decay constant = 0.693 / t
bb
ë = biological removal constant -0.693 / t
Calculating Internal Dose (ICRP 30)
50 S
H (T7S) = (1.6E-10)U SEE(T7S)
50
H = 50 year dose equivalent commitment in sieverts
where SEE is the Specific Effective Energy modified by a quality
factor for radiation absorbed in the target organ (T) for each
transformation in the source organ (S) expressed in MeV/g.
T
SEE = 3YCECAFCQ/M
where;
Y = yield of radiations per transformation
E = average energy of the radiation
AF = absorbed fraction of energy absorbed in the target organ
(T) per emission of radiation in the source organ (S)
Q = quality factor
T
M = mass of the target organ
S
U = number of nuclear transformations in the source organ
(S) during the time interval for which the dose is to be
calculated
48
INTERNAL DOSIMETRY
Effective Half-Life
effrbrb
t = t x t / (t + t )
r
where; t = radioactive half-life
b
t = biological half-life
Effective Removal Constant
eff r b
ë = ë + ë
r½
where; ë = decay constant = 0.693 / t
bb
ë = biological removal constant -0.693 / t
Calculating Internal Dose (ICRP 30)
50 S
H (T7S) = (1.6E-10)U SEE(T7S)
50
H = 50 year dose equivalent commitment in sieverts
where SEE is the Specific Effective Energy modified by a quality
factor for radiation absorbed in the target organ (T) for each
transformation in the source organ (S) expressed in MeV/g.
T
SEE = 3YCECAFCQ/M
where;
Y = yield of radiations per transformation
E = average energy of the radiation
AF = absorbed fraction of energy absorbed in the target organ
(T) per emission of radiation in the source organ (S)
Q = quality factor
T
M = mass of the target organ
S
U = number of nuclear transformations in the source organ
(S) during the time interval for which the dose is to be
calculated
48
INTERNAL DOSIMETRY
Effective Half-Life
effrbrb
t = t x t / (t + t )
r
where; t = radioactive half-life
b
t = biological half-life
Effective Removal Constant
eff r b
ë = ë + ë
r½
where; ë = decay constant = 0.693 / t
bb
ë = biological removal constant -0.693 / t
Calculating Internal Dose (ICRP 30)
50 S
H (T7S) = (1.6E-10)U SEE(T7S)
50
H = 50 year dose equivalent commitment in sieverts
where SEE is the Specific Effective Energy modified by a quality
factor for radiation absorbed in the target organ (T) for each
transformation in the source organ (S) expressed in MeV/g.
T
SEE = 3YCECAFCQ/M
where;
Y = yield of radiations per transformation
E = average energy of the radiation
AF = absorbed fraction of energy absorbed in the target organ
(T) per emission of radiation in the source organ (S)
Q = quality factor
T
M = mass of the target organ
S
U = number of nuclear transformations in the source organ
(S) during the time interval for which the dose is to be
calculated
48