RADT 1200 Chapter 2 Test Questions and Answers All Correct
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Module
RADT 1200
Institution
RADT 1200
RADT 1200 Chapter 2 Test Questions and Answers All Correct
What are the two largest sources of artificial radiation - Answer--radiography and fluoroscopy
-computed tomography procedures
Exposure to human made radiation in medical applications continue to ________ - Answer-increase rapidly
...
RADT 1200 Chapter 2 Test
Questions and Answers All
Correct
What are the two largest sources of artificial radiation - Answer--radiography and
fluoroscopy
-computed tomography procedures
Exposure to human made radiation in medical applications continue to ________ -
Answer-increase rapidly
Patient dose for each exam varies according to ______ - Answer-the facility providing
imaging services
The amount of radiation received by a patient from diagnostic x ray procedures may be
indicated by: - Answer-- entrance skin exposure
-bone marrow dose
-gonadal dose
Radiation refers to kinetic energy that ____ - Answer-passes from one location to
another and can have many manifestations
What is frequency measured in - Answer-Hertz (Hz)
What is wavelength measured in - Answer-meters (m)
Higher frequencies are associated with ____ - Answer-shorter wavelengths and higher
energies
Radiation quantity such as equivalent and absorbed dose inly applies to _______ -
Answer-ionizing types of radiation
Radioactive decay - Answer-a naturally occurring process in which unstable nuclei
relieve instability by various types of nuclear spontaneous emissions
As an external source of radiation alpha particles: - Answer-are considered virtually
harmless
, As an internal source of radiation alpha particles: - Answer-can be absorbed in relatively
radiosensitive epithelia tissue and are very damaging
If excessive cellular damage occurs from ionizing radiation the living organism has a
higher chance of developing: - Answer-- mutations
-cataracts
-leukemia
changes in blood count are classic examples of _____ that results from non-negligible
exposure to ionizing radiation - Answer-organ damage
Sv of 0.25 results in - Answer-blood changes
Sv of 1.5 results in - Answer-nausea, diarrhea
Sv of 2.0 results in - Answer-erythema or redness
Sv of 2.5 results in - Answer-temporary sterility
Sv of 3.0 results in - Answer-50% chance of death
Sv of 6.0 results in - Answer-death
37% of natural background radiation exposure comes primarily from: - Answer-radon
and a smaller amount of thoron
radon initially does not cling to other particles and acts as a free agent that floats around
soil and is referred to as a ____ - Answer-noble gas
because radon acts as a noble gas the natural flow can ______ - Answer-draw radon
into the lower levels of homes and permeate upward through structures and become
solid particles
radionuclide - Answer-an unstable nucleus that emits one or more forms of ionizing
radiation to achieve greater stability
radioactive nuclides that exist in small quantities in the human body are: - Answer--
potassium
-carbon
-hydrogen
-strontium
the amount of radiation actually received by a patient from a diagnostic x ray procedure
may be indicated in terms such as: - Answer--entrance skin exposure
-bone marrow dose
-gonadal dose
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