Internal Dosimetry - Panasonic PT-DZ12000U Operating Instructions Manual

Calculating CDE and CEDE ICRP 26/30
CDE = I / nALI x 50 rem (0.5 Sv) nALI is the non-
stochastic ALI
CDE = 50 yr committed dose equivalent to irradiated tissue
I = Intake
nALI = non-stochastic ALI = 50 rem (0.5 Sv)/ h
h = greatest dose equivalent found in the
max
exposure-to-dose conversion tables
CEDE = I / sALI x 5 rem (50 mSv) sALI is the stochastic ALI
CEDE = 50 yr committed effective dose equivalent
OR CEDE =
CEDE = 50 yr committed effective dose equivalent to individual
tissue
W = tissue weighting factor
T
Effective Dose Equivalent EDE = H
D.E. rate (Sv / hr)
Calculating DAC and DAC-hours
DAC = ALI / 2000 hr at 1.2 E6 ml / hr
1 DAC-h = 2.5 mrem (25 ìSv) CEDE if based on sALI OR
DAC Fraction
DAC fraction x time (hours) = DAC-hours

INTERNAL DOSIMETRY

Intake I(Bq)
Body burden q
CEDE or H
50
TEDE
INTERNAL DOSIMETRY
n
W
i=1 T
= 0.15 A(TBq)E / r
25 mrem (0.25 mSv) ref ICRP 26 CDE to an
organ or tissue if based on nALI
= A (Bq) / IRF
= q e
t 0
= 50 mSv (5 rem) x I / ALI
= CEDE + Deep Dose Equivalent
E
= (concentration / DAC)/PF
i
t t
-ë t
eff
47
max
= W H
T T
2