Units And Terminology - Panasonic PT-DZ12000U Operating Instructions Manual

Exposure
Dose
Dose Equiv
Activity
1 Roentgen
1 rad
1 Gray
1 rem
H
H (Dose Equiv.)
Acute
Chronic
Somatic
Genetic
Teratogenic
Stochastic
Non-Stochastic
(deterministic)

UNITS AND TERMINOLOGY

"Special Units"
Roentgen
rad (0.01 Gy)
rem (0.01 Sv)
Curie (2.22 E12 dpm)
= 2.58 E-4 coulomb / kg in air
= 1 esu / cm in air
= 87.7 ergs / gm in air
= 98 ergs / gm in soft tissue
= 100 ergs / gm in any absorber
= 10,000 ergs / gm in any absorber
= 1 rad x QF
= DQN (from ICRP 26)
= D (absorbed dose) x Q (quality factor)
x N (any other modifying factors)
DEFINITIONS
any dose in a short period of time
any dose in a long period of time
effects in the exposed individual
effects in the offspring of the exposed
individual
effects in the exposed unborn embryo/fetus
effects for which a probability exists and
increases with increasing dose
effects for which a threshold exists -
effects do not occur below the threshold
(examples; cataracts, erythema, epilation,
acute radiation syndrome)
184
SI Units
Coulombs / kg
Gray (100 rad)
Sievert (100 rem)
Becquerel (1dps)
3
= 0.01 Sv