RADIATION PROTECTION (BIOLOGICAL ASPECTS OF RADIATION) ARRT EXAM QUESTIONS AND CORRECT DETAILED ANSWERS A+ GRADED
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Module
Arrt
Institution
Arrt
The principal late effects of ionizing radiation on humans include
tissue damage
ic effects
nant disease - ANS ic effects
nant disease
Late or long-term effects of radiation can occur in tissues as a result of chronic exposure or tissues that have survived a previous irradiation mont...
K
Late or long-term effects of radiation can occur in tissues as a result of chronic exposure or
tissues that have survived a previous irradiation months or years earlier. These late effects,
such as carcinogenesis and genetic effects, are "all-or-nothing" effects—either the organism
C
develops cancer or it does not.
Examples of late effects of ionizing radiation on humans include:
LO
1.leukemia
2.local tissue damage
3.malignant disease - ANS ALL...
Occupationally exposed individuals are concerned principally with late (i.e., long-term or
YC
delayed) effects of ionizing radiation such as radiation-induced genetic effects, leukemia, and
cancers (e.g., bone, lung, thyroid, and breast), as well as local effects, such as skin erythema,
infertility, and cataracts—these can occur many years following initial exposure to low levels of
ionizing radiation. The long-term/delayed effects usually are chronic, and many are represented
by the linear, nonthreshold dose-response curve.
D
The effect of ionizing radiation on tissue depends on which of the following?
1.Type of tissue interaction(s)
2.Amount of interactions
U
3.Biologic differences - ANS ALL...
Stochastic effects of radiation are those that
ST
1.have a threshold
2.may be described as "all-or-nothing" effects
3.are late effects - ANS 2.may be described as "all-or-nothing" effects
3.are late effects
Late effects of radiation can occur in cells that have survived a previous irradiation months or
years earlier. These late effects, such as carcinogenesis and genetic effects, are "all-or-nothing"
effects—either the organism develops cancer or it does not. Most late effects do not have a
threshold dose; that is, any dose, however small, theoretically can induce an effect.
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