DMS/Bioeffects/Topic 1/June2020/Bioeffects and Safety
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Across
________ is the science of identifying and
measuring the characteristics of an ultrasound
beam that are relevant to its potential for producing
biological effects.
Power is measured in _____.
Sonographers must follow facility _______
regarding ensuring the individual responding for an
exam is the actual patient for the exam.
_________ is a tiny electronic thermometer
placed into the sound beam and the temperature is
measured.
______ the exposure time to the patient, the
intensity, and type of ultrasound.
________ is the interaction of the sound waves
with microscopic gas bubbles in the tissue.
Pressure is measured in ___________ .
______ studies involve analyzing populations of
which some individuals have been exposed to
ultrasound and of which some have not to perform
statistical surveys.
The units of measure for intensity is ______ per
centimeter squared.
Temperature _____ is directly related to the
amount of power.
Direct testing to threshold levels on living
human patients is ______ not an option.
_______ is the amount of power divided by the
area.
_______ is an acoustical variable, which is
defined as force divided by area.
________ index is the ratio of the acoustic
power produced by the transducer to the power
required to raise tissue temperature by 1 degree C.
Down
___________ is the rate at which work is
performed.
A ________ force balance or scale measures
the intensity or power of the sound beam by
measuring the force the sound beam exerts on the
scale or balance.
In ____ refers to "in glass"
Cracked transducer housing may pose a
potential risk of ______. (two words)
Sonographers must ______ the exam indicated
on the imaging request form with the patient’s
referring physician’s order.
Acoustic __________ describes the amount of
acoustic energy the patient receives.
_________ is calibrated to measure total
power in a sound beam through the process of
absorption.
In _______ refers to “in the living”.
________ index is the parameter that
describes the acoustic output in terms of the
likelihood of cavitation.
_______ values are used to describe intensity
over time.
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