RADIATION PROTECTION CHAPTER CH 4 RADIATION
QUANTITIES AND UNITS AND CH.5 RADIATION
MONITORING (LATEST UPDATE) REAL QUESTIONS AND
VERIFIED ANSWERS |100% CORRECT | ALREADY GRADED
A
Aplastic Anemia Ans✓✓✓Blood disorder resulting from bone marrow
failure after exposure to ionizing radiation.
Linear energy transfer (LET) Ans✓✓✓Concept that helps explain the
need for a quality, or modifying, factor.
SI Ans✓✓✓Allows units to be used interchangeably among all branches
of science throughout the world.
Leukemia Ans✓✓✓Blood disorder resulting in abnormal
overproduction of white blood cells after exposure to ionizing radiation.
Air Kerma Ans✓✓✓Kinetic energy released in a unit mass (kilogram)
of air.
Somatic damage Ans✓✓✓Biologic damage to the body caused by
exposure to ionizing radiation.
Gy Ans✓✓✓SI unit used to express D
,Dose area product (DAP) Ans✓✓✓A measure of the amount of radiant
energy that has been thrust into a portion of the patient's body surface.
R Ans✓✓✓The photon (either x-ray or gamma ray) exposure that under
standard conditions of pressure and temperature produces a total positive
or negative ion charge of 2.5 x 10(-4) C/kg of dry air.
Person-Sievert Ans✓✓✓SI unit for the radiation quantity ColEfD
Wr Ans✓✓✓A dimensionless factor (a multiplier) that was chosen for
radiation protection purposes to account for differences in biologic
impact among various types of ionizing radiation.
Occupational exposure Ans✓✓✓Radiation exposure received by
radiation workers in the course of exercising their professional
responsibilities.
EfD Ans✓✓✓The product of D x Wr x Wt
Crookes tube Ans✓✓✓A pear shaped, partial vacuum discharge tube.
Gamma radiation Ans✓✓✓Short wavelength, higher energy
electromagnetic waves emitted by the nuclei of radioactive substances.
,Skin erythema dose Ans✓✓✓Unit used from 1900 to 1930 to measure
radiation exposure.
EqD Ans✓✓✓Product of D x Wr
TEDE Ans✓✓✓Radiation quantity that is a particularly useful dose
monitor for occupational exposed personnel such as nuclear medicine
technologists and interventional radiologists, who are likely to receive
possibly significant radiation exposure during the course of a year.
Sv Ans✓✓✓SI unit of EqD
D Ans✓✓✓The amount of energy per unit mass absorbed by an
irradiated object.
Bragg-Gray Theory Ans✓✓✓Relates the ionization produced in a small
cavity within an irradiated medium or object to the energy absorbed in
that medium as a result of its radiation exposure.
Barium Platinocyanide Ans✓✓✓Fluorescent material that coated the
paper used when x-rays were discovered.
Exposure Ans✓✓✓The amount of ionizing radiation that may strike an
object such as the human body when in the vicinity of a radiation source.
, Tissue Kerma Ans✓✓✓The kinetic energy released in a unit mass of
tissue.
Effective atomic number (Zeff) Ans✓✓✓A composite, or weighted
average, of the atomic numbers of the many chemical elements
comprising the tissue.
Which of the following factors must be multiplied to determine the EfD
from an x-radiation exposure of an organ or body part?
A. EqD x Wr x D
B. Wt x Wr x ColEfD
C. D x Wr x Wt
D. D x C/kg Ans✓✓✓C. D x Wr x Wt
Which of the following is the SI unit of radiation exposure that is used
for x-ray equipment calibration?
A. C/kg
B. DAP
C. R
D. Sv Ans✓✓✓A. C/kg
The expression 10(-6) may be symbolically expressed as which of the
following?
A. P
QUANTITIES AND UNITS AND CH.5 RADIATION
MONITORING (LATEST UPDATE) REAL QUESTIONS AND
VERIFIED ANSWERS |100% CORRECT | ALREADY GRADED
A
Aplastic Anemia Ans✓✓✓Blood disorder resulting from bone marrow
failure after exposure to ionizing radiation.
Linear energy transfer (LET) Ans✓✓✓Concept that helps explain the
need for a quality, or modifying, factor.
SI Ans✓✓✓Allows units to be used interchangeably among all branches
of science throughout the world.
Leukemia Ans✓✓✓Blood disorder resulting in abnormal
overproduction of white blood cells after exposure to ionizing radiation.
Air Kerma Ans✓✓✓Kinetic energy released in a unit mass (kilogram)
of air.
Somatic damage Ans✓✓✓Biologic damage to the body caused by
exposure to ionizing radiation.
Gy Ans✓✓✓SI unit used to express D
,Dose area product (DAP) Ans✓✓✓A measure of the amount of radiant
energy that has been thrust into a portion of the patient's body surface.
R Ans✓✓✓The photon (either x-ray or gamma ray) exposure that under
standard conditions of pressure and temperature produces a total positive
or negative ion charge of 2.5 x 10(-4) C/kg of dry air.
Person-Sievert Ans✓✓✓SI unit for the radiation quantity ColEfD
Wr Ans✓✓✓A dimensionless factor (a multiplier) that was chosen for
radiation protection purposes to account for differences in biologic
impact among various types of ionizing radiation.
Occupational exposure Ans✓✓✓Radiation exposure received by
radiation workers in the course of exercising their professional
responsibilities.
EfD Ans✓✓✓The product of D x Wr x Wt
Crookes tube Ans✓✓✓A pear shaped, partial vacuum discharge tube.
Gamma radiation Ans✓✓✓Short wavelength, higher energy
electromagnetic waves emitted by the nuclei of radioactive substances.
,Skin erythema dose Ans✓✓✓Unit used from 1900 to 1930 to measure
radiation exposure.
EqD Ans✓✓✓Product of D x Wr
TEDE Ans✓✓✓Radiation quantity that is a particularly useful dose
monitor for occupational exposed personnel such as nuclear medicine
technologists and interventional radiologists, who are likely to receive
possibly significant radiation exposure during the course of a year.
Sv Ans✓✓✓SI unit of EqD
D Ans✓✓✓The amount of energy per unit mass absorbed by an
irradiated object.
Bragg-Gray Theory Ans✓✓✓Relates the ionization produced in a small
cavity within an irradiated medium or object to the energy absorbed in
that medium as a result of its radiation exposure.
Barium Platinocyanide Ans✓✓✓Fluorescent material that coated the
paper used when x-rays were discovered.
Exposure Ans✓✓✓The amount of ionizing radiation that may strike an
object such as the human body when in the vicinity of a radiation source.
, Tissue Kerma Ans✓✓✓The kinetic energy released in a unit mass of
tissue.
Effective atomic number (Zeff) Ans✓✓✓A composite, or weighted
average, of the atomic numbers of the many chemical elements
comprising the tissue.
Which of the following factors must be multiplied to determine the EfD
from an x-radiation exposure of an organ or body part?
A. EqD x Wr x D
B. Wt x Wr x ColEfD
C. D x Wr x Wt
D. D x C/kg Ans✓✓✓C. D x Wr x Wt
Which of the following is the SI unit of radiation exposure that is used
for x-ray equipment calibration?
A. C/kg
B. DAP
C. R
D. Sv Ans✓✓✓A. C/kg
The expression 10(-6) may be symbolically expressed as which of the
following?
A. P
