Radiation Protection In Medical Radiography
Midterm Exam: Questions With In-Depth Solutions
Bone marrow cells Correct Answer - can repopulate after a period of
recovery if not destroyed by exposure to ionizing radiation.
Diagnostic efficacy Correct Answer - includes determining if an imaging
procedure is justified, producing optimal quality images with the least
radiation exposure to the patient, adhering to radiation safety guidelines, and
revealing the presence or absence of disease in a patient.
Linear nonthreshold relationship Correct Answer - implies that the
biologic response to ionizing radiation is directly proportional to the dose all
the way down to levels approaching zero.
Fraternal twins Correct Answer - may also be referred to as dizygotic
twins.
Chromosome aberrations Correct Answer - the rate of production is
determined by the total radiation dose given to a somatic cell, the total
radiation given to a genetic cell, and the period of time in which radiation dose
was delivered.
Sources of low-level radiation exposure Correct Answer - include X-rays
and radioactive materials used for diagnostic purposes, employment-related
exposure in medicine and industry, and natural background radiation.
Leukemia among atomic bomb survivors Correct Answer - the number
of people living with leukemia has slowly declined since the late 1940s and
early 1950s.
first decay product of radium Correct Answer - is radon.
master molecule Correct Answer - if inactivated due to multiple hits
from ionizing radiation, normal cell function will cease, and the cell will die.
, cancer deaths attributed to x-ray exposure Correct Answer - were
reported among physicians as early as 1910.
moist and dry desquamation Correct Answer - can be caused by high
radiation doses.
spontaneous mutations Correct Answer - are mutations in genes and
DNA that occur at random as natural phenomena.
cardinal principles of radiation protection Correct Answer - include all
the options.
OSL dosimeter Correct Answer - is sensitive down to as low as 10 µSv
for x-ray and gamma ray photons in the energy range 5 keV to 40 MeV,
making it an excellent monitoring device for employees working in low-
radiation environments and for pregnant workers.
OSL dosimeter Correct Answer - A monitoring device sensitive down to
as low as 10 µSv for x-ray and gamma ray photons in the energy range 5 keV
to 40 MeV.
Roentgens, rads, and rems Correct Answer - Units of measure that are
not SI units.
Deoxyribonucleic acid (DNA) Correct Answer - Serves as a prototype for
messenger RNA (mRNA).
Human cells Correct Answer - Can move, grow, react, protect
themselves, repair damage, regulate life processes, and reproduce.
Oxidation Correct Answer - Any chemical reaction in which atoms lose
electrons.
Radiation dose question difficulty Correct Answer - Difficult to answer
because the received dose is specified in different units and the scientific units
are not comprehensible by patients.
Gonadal radiation doses Correct Answer - Doses of 5.0 or 6.0 Gyt may
cause permanent sterility in a male human.
Midterm Exam: Questions With In-Depth Solutions
Bone marrow cells Correct Answer - can repopulate after a period of
recovery if not destroyed by exposure to ionizing radiation.
Diagnostic efficacy Correct Answer - includes determining if an imaging
procedure is justified, producing optimal quality images with the least
radiation exposure to the patient, adhering to radiation safety guidelines, and
revealing the presence or absence of disease in a patient.
Linear nonthreshold relationship Correct Answer - implies that the
biologic response to ionizing radiation is directly proportional to the dose all
the way down to levels approaching zero.
Fraternal twins Correct Answer - may also be referred to as dizygotic
twins.
Chromosome aberrations Correct Answer - the rate of production is
determined by the total radiation dose given to a somatic cell, the total
radiation given to a genetic cell, and the period of time in which radiation dose
was delivered.
Sources of low-level radiation exposure Correct Answer - include X-rays
and radioactive materials used for diagnostic purposes, employment-related
exposure in medicine and industry, and natural background radiation.
Leukemia among atomic bomb survivors Correct Answer - the number
of people living with leukemia has slowly declined since the late 1940s and
early 1950s.
first decay product of radium Correct Answer - is radon.
master molecule Correct Answer - if inactivated due to multiple hits
from ionizing radiation, normal cell function will cease, and the cell will die.
, cancer deaths attributed to x-ray exposure Correct Answer - were
reported among physicians as early as 1910.
moist and dry desquamation Correct Answer - can be caused by high
radiation doses.
spontaneous mutations Correct Answer - are mutations in genes and
DNA that occur at random as natural phenomena.
cardinal principles of radiation protection Correct Answer - include all
the options.
OSL dosimeter Correct Answer - is sensitive down to as low as 10 µSv
for x-ray and gamma ray photons in the energy range 5 keV to 40 MeV,
making it an excellent monitoring device for employees working in low-
radiation environments and for pregnant workers.
OSL dosimeter Correct Answer - A monitoring device sensitive down to
as low as 10 µSv for x-ray and gamma ray photons in the energy range 5 keV
to 40 MeV.
Roentgens, rads, and rems Correct Answer - Units of measure that are
not SI units.
Deoxyribonucleic acid (DNA) Correct Answer - Serves as a prototype for
messenger RNA (mRNA).
Human cells Correct Answer - Can move, grow, react, protect
themselves, repair damage, regulate life processes, and reproduce.
Oxidation Correct Answer - Any chemical reaction in which atoms lose
electrons.
Radiation dose question difficulty Correct Answer - Difficult to answer
because the received dose is specified in different units and the scientific units
are not comprehensible by patients.
Gonadal radiation doses Correct Answer - Doses of 5.0 or 6.0 Gyt may
cause permanent sterility in a male human.
