RADT 1200 Final Test Questions and Answers All Correct
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Course
RADT 1200
Institution
RADT 1200
RADT 1200 Final Test Questions and Answers All Correct
The hematopoietic form of acute radiation syndrome is also called the - Answer-bone marrow syndrome
Which of the following groups of cells is least radiosensitive? - Answer-Adult nerve cells
Which of the following humans is most radiose...
RADT 1200 Final Test Questions
and Answers All Correct
The hematopoietic form of acute radiation syndrome is also called the - Answer-bone
marrow syndrome
Which of the following groups of cells is least radiosensitive? - Answer-Adult nerve cells
Which of the following humans is most radiosensitive? - Answer-An embryo-fetus during
the first trimester of pregnancy
During cardiovascular or other therapeutic interventional procedures that use high-level
fluoroscopy for extended periods, the effects of ionizing radiation on the skin are -
Answer-significant
A single absorbed dose of 2 Gyt can cause a radiation-induced skin erythema within -
Answer-24-48 hours
What is the mean value of the radiation doubling equivalent dose for humans as
determined from the children of the atomic bomb survivors of Hiroshima and Nagasaki -
Answer-1.56 Sv
Revised concepts of radiation exposure and risk have brought about more recent
changes in NCRP recommendations for limits on
exposure to ionizing radiation. Because many conflicting views exist on assessing the
risk of cancer induction from low-level
radiation exposure, the trend has been to
a. create more rigorous radiation protection standards.
b. reduce rigorous radiation protection standards.
c. eliminate radiation protection standards.
d. leave radiation protection standards the same as they have been for the last 20
years. - Answer-A
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 - Answer-0.4 Sv
Cataract formation, fibrosis, reduced fertility and sterility are classified as - Answer-late
tissue reactions of ionizing radiation
, Existing data on radiation-induced genetic effects in humans - Answer-are both
contradictory and inconclusive
Genetic effects from exposure to ionizing radiation occur as a result of radiation-induced
damage to the DNA molecule in which of the following?
1. Sperm of a man
2. Ova of a woman
3. Somatic cells of men and women - Answer-1&2
Some mutations in genetic material occur spontaneously, without a known cause. In
humans, a hereditary disorder is present in approximately ____ of all live births in the
U.S. - Answer-10%
The term linear nonthreshold relationship implies that the biologic response to ionizing
radiation is - Answer-directly proportional to the dose all the way down to levels
approaching zero
Which of the following agencies was previously known as the Atomic Energy
Commission? - Answer-NRC
Which of the following x-ray procedures increase the radiographer's risk of exposure to
ionizing radiation compared to radiography?
1) Mobile C arm fluoroscopy
2)interventional procedures that use high level control fluoroscopy
3) Mobile radiographic examinations - Answer-all of the options
When a fluoroscopic image is electronically amplified by the use of an image
intensification system, which of the following benefits results?
1. Increased image brightness
2. Saving of time for the radiologist
3. Patient dose reduction - Answer-all of the options
Digital radiography systems offer several advantages over computed radiography.
Some of these include
1) lower dose
2) ease of use
3) immediate imaging results
4) manipulation of the image - Answer-all of the options
In the event that a pregnant patient is inadvertently irradiated - Answer-the radiation
safety officer or the medical physicist should perform the calculations necessary to
determine fetal dose
When a properly calibrated automatic exposure control (AEC) is not employed to obtain
a uniform selection of technical x-ray exposure factors, well-managed imaging
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