WorksheetsChapter 10 Radbio
Total questions: 26
Worksheet time: 13mins
What is the annual occupational exposures effective dose limits?
5 mSv (500 mrem)
50 mSv (5 rem)
.5 mSv (.05 rem)
15 mSv (1.5 rem)
Occasional exposure for the purpose of education and training is permitted, provided that special care is taken to ensure that the annual effective dose limit of ____________ is not exceeded for persons under the age of 18 years.
2 mSv annually
0.5 mSv annually
0.1 mSv annually
1 mSv annually
Occupational exposures equivalent dose annual limits for lens of eye
1.5 mSv
15 mSv
150 mSv
0.5 mSv
Which of these units would demonstrate the radiation dose rate?
mSv/hr
J/kg
µC/kg
mGy/mAs
Public effective dose limit, continuous or frequent exposure (annually)
25 mSv
1 mSv
50 mSv
5 mSv
Public effective dose limit, infrequent exposure(annually)
1 mSv
5 mSv
10 mSv
25 mSv
Public effective dose limit for skin, hands, and feet
150 mSv
50 mSv
5 mSv
1.5 mSv
Embryo and fetus equivalent dose limit for entire gestation
1.5 mSv
5 mSv
15 mSv
10 mSv
Epidemiologic studies of atomic bomb survivors exposed in utero have provided conclusive evidence of a dose-dependent increase in the incidence of severe intellectual disability for fetal doses greater than approximately
0.4 Sv.
0.1 Sv.
0.5 Sv.
0.3 Sv.
The ALARA concept was recommended by which organization?
NAS / NRC-BEIR
ICRP
NCRP
NAACP
______ provides the most recent guidance on radiation protection for the prevention of any radiation induced conditions in the exposed person.
Public Law 97-35
NCRP Report No. 116
Public Law 90-602
NCRP Report No. 106
In therapeutic radiology what SI units are now routinely used to specify absorbed dose?
Air kerma and micrograyGray and centigray
Coulomb per kilogram and roentgen
Gray and centigray
Sievert and millisievert
How is dose area product usually specified?
In subunits of millisievert
In coulomb per kilogram
In ergs per gram
In units of mGy-cm2
The total kinetic energy released in a unit mass (kilogram) of air and expressed in metric units of joules per kilogram is
air kerma.
effective dose.
equivalent dose.
Which of the following formulas is used to calculate effective dose?
EfD = (D x WR)1 + (D xWR)2 + (D x WR)3
EfD = D x WR x WT
EfD = D ÷ WR x WT
Equivalent Dose is obtained by:
Absorbed Dose x WR
Absorbed Dose x WR x WT
Absorbed Dose x WT
Air Kerma x WT x WR
In the SI system, an energy absorption of 1 J/kg of matter in the irradiated object equals which of the following?
1 Gy
1 mSv
1 Rem
1 Rad
The ALARA concept was recommended by which organization?
NCRP
ICRP
UNSCEAR
NAS / NRC-BEIR
The CDRH falls under the jurisdiction of the OSHA.
T
F
The whole-body TEDE regulatory limit for exposed personnel is _____________ and ______________ for the general public.
0.05 Sv; 0.001 Sv
0.15 Sv; 0.015 Sv
0.25 Sv; 0.025 Sv
0.5 Sv; 0.1 Sv
Occupational exposures equivalent dose annual limits for the skin, hands, and feet
5 mSv
500 mSv
50 mSv
150 mSv
Public effective dose limit, infrequent exposure(annually)
1 mSv
5 mSv
10 mSv
15 mSv
The equivalent dose annual limits for the lens of the eyes. (Public)
15 mSv
25 mSv
50 mSv
150 mSv
Annual Effective whole body occupational dose limit
10 mSv x age of individual
50 mSv
100 mSv
50 mSv x age of individual
Determine the cumulative effective dose (CumEfD) limit to the whole body of an occupationally exposed person who is 46 years old.
4.6 mSv
46 mSv
460 mSv
.460 mSv
Epidemiologic studies of atomic bomb survivors exposed in utero have provided conclusive evidence of a dose-dependent increase in the incidence of severe intellectual disability for fetal doses greater than approximately
0.4 Sv.
0.1 Sv.
0.5 Sv.
0.3 Sv.
