Protection Unit 1 WS 2 Flashcards
Somatic damage
Damage done to persons exposed
Genetic damage
Damage to generations yet unborn
2 examples of short-term somatic damage
blood changes
nausea, diarrhea
2 examples of long-term somatic damage
cancer
embryonic damage
How do you convert a traditional unit to an SI
traditional / 100
1 mrem = ____rem
.001
First American radiation related death
Clarence Daily
What was first “unit” used to measure exposure
roentgen
10 rad = ___ Gray
.01
1000 SV= ___rem
10000
1 cGy= Gy
.01
Roentgen only measures what 2 radiations
Xray
Gamma ray
Output of a tube would be measured in what unit
Roentgen
What does the acronym “rad” stand for
radiation absorbed dose
What does the acronym “rem” stand for
Radiation equivalent man
What does LET stand for?
Linear energy transfer
The higher the LET the _____ the amt of energy that is transfered
greater
The higher the LET the ____ amt of damage possible
greater
Define biological effect
effects of radiation on/in a person’s body
Formula for biologic effect
rem=quality factor x absorbed dose
1 R=___ rad
1
1 rad= ____ rem
1
1 rad=___erg/g
100
If your exposed to 15 R of xray what is your absorbed dose and dose equivalent?
15 rem, 15 rad
3 potential effects from radiation exposure and include amt of dose required to cause that effect.
25 rem blood changes
200 rem erythema
250 rem temporary steriity
Exposure symbol
Exposure SI unit
Exposure Traditional Unit
X
2.58x10 -4 coulombs/kg
Roentgen (R)
Exposure/Intensity Definition
Measures ionization in air or electrical charge
What is exposure or intensity used by
physicists use in an ionization chamber
Absorbed dose symbol
SI Unit
Traditional unit
D
Gray (Gy)
rad
Absorbed dose definition
amount of energy absorbed
1 rad=____ergs/gram
100
Equivelent dose symbol
SI Unit
Traditional Unit
EqD
Seivert, Sv
rem
Equivelent dose
Uses a radation weighting factor to tel lthe difference from equal doses of different types of radiation
Effective dose symbol
SI Unit
Traditional unit
EfD
Seivert
rem
EfD Definition
tissue weighting factor to tell the difference in harm to different body parts based on their sensitivity