RAD 140| 162 Exam Excellence: Unleashing Your Potential |Answers
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Course
RAD 140
Institution
RAD 140
_____ is a stochastic effect of radiation exposure. - ️️cancer
________ are among the most radioresistive species. - ️️cockroaches
A _____ effect increases in incidence but not severity as the dose increases. - ️️stochastic
A controlled area is one occupied primarily by _____. - ️�...
RAD 140| 162 Exam Excellence:
Unleashing Your Potential
_____ is a stochastic effect of radiation exposure. - ✔ ✔ cancer
________ are among the most radioresistive species. - ✔ ✔ cockroaches
A _____ effect increases in incidence but not severity as the dose increases. - ✔ ✔ stochastic
A controlled area is one occupied primarily by _____. - ✔ ✔ radiology personnel and patients
A cumulative timer is designed to _____ of fluoroscopy beam-on time. - ✔ ✔ make the radiologist
aware
A dose of _____ Gy or more to a small area of the body can cause skin erythema. - ✔ ✔ 2
A fluoroscopy system with automatic collimation must provide an unexposed border around the image
at _____ above the table top. - ✔ ✔ all heights
A Geiger-Muller counter is a(n) _____. - ✔ ✔ gas-filled detector
A hit to a cell target can occur from a(n) _____ effect. - ✔ ✔ indirect
direct
A local dose of _____ rad(s) or more can cause gonadal dysfunction. - ✔ ✔ 10
A person subjected to 50 Gy to the whole body may survive for _____ before death occurs. - ✔ ✔ 3
days
A protective apron with a thickness of 0.25 mm lead equivalent is the minimum required. - ✔ ✔ True
A quantity that reflects both dose and volume of tissue irradiated is the _____. - ✔ ✔ dose area
product
A secondary barrier is designed to absorb _____ radiation - ✔ ✔ leakage and scattered
A single chromosome aberration represents _____ to the DNA within the chromosome. - ✔ ✔ severe
damage
A study of an irradiated population which showed a relative risk factor below 1.0 would indicate that the
population had a _____ risk. - ✔ ✔ reduced
, A subject would not experience _____ following a dose high enough to cause CNS syndrome. - ✔ ✔
hematologic syndrome
gastrointestinal syndrome
A target molecule that is _____ will always cause cell death. - ✔ ✔ inactivated
A tenth-value layer is equal to _____ half-value layers. - ✔ ✔ 3.3
A type of DNA damage that may not be reversible is a _____. - ✔ ✔ base change or loss
About half of the population will experience skin erythema following a localized dose of _____ Gy. - ✔
✔ 5
According to target theory, the target molecule of a cell is _____. - ✔ ✔ the DNA in the nucleus
Acute skin effects from radiation exposure have been reported following _____ exams. - ✔ ✔
angiointerventional
An epidemiological study of the stochastic effects of very low doses of radiation requires a population of
_____ of people. - ✔ ✔ millions
An estimation of patient dose is reported as _____. - ✔ ✔ ESE, Bone marrow dose, gonadal dose
An indirect effect from ionizing radiation occurs on a _____ molecule. - ✔ ✔ water
Ankylosing spondylitis patients treated with radiation showed an increased incidence of _____. - ✔ ✔
leukemia
At the level of the tabletop, the intensity of the fluoroscopic beam should not exceed _____ for each mA
of operation at 80 kVp. - ✔ ✔ 21 mGy/min
Bone marrow dose is measured _____. - ✔ ✔ as an estimate from ESE
Breast dose from a scoliosis exam can be reduced by using the _____. - ✔ ✔ PA projection and
shielding
Chronic low doses of radiation have _____ effect on fertility. - ✔ ✔ no
CT is considered a low-dose procedure. - ✔ ✔ False
Data showing radiation-induced human genetic abnormalities _____. - ✔ ✔ does not exist
Death from acute radiation exposure follows a _____ dose-response relationship. - ✔ ✔ nonlinear,
threshold
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