Test Bank: Sonography Principles & Instrumentation Exam 2023 Questions And Answers Graded A+
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Course
Tesnciples & Instrumentati
Institution
Tesnciples & Instrumentati
Test Bank: Sonography
Principles &
Instrumentation Exam
2023 Questions And
Answers Graded A+
What is refraction? - CORRECT ANSWERDeflection of ultrasound waves due to
media with varied acoustic impedance
What is reflection? - CORRECT ANSWERReturn of the ultrasound wave to the
...
Test Bank: Sonography
Principles &
Instrumentation Exam
2023 Questions And
Answers Graded A+
,What is refraction? - CORRECT ANSWER-
Deflection of ultrasound waves due to
media with varied acoustic impedance
What is reflection? - CORRECT ANSWER-
Return of the ultrasound wave to the
transducer from a smooth surface
When does the greatest amount of
reflection occur? - CORRECT ANSWER-When
the incident beam is perpendicular to the
structure (i.e. specular reflection)
,What are the four ways that sound can
interact with tissue? - CORRECT ANSWER-1.
Reflection
2. Scatter
3. Refraction
4. Attenuation
What is scatter? - CORRECT ANSWER-
Deflection of ultrasound waves from small
structures; red blood cells scatter sound
What is attenuation? - CORRECT ANSWER-
Loss of ultrasound signal due to absorption
in tissues as it travels
What happens if there is air between the
probe and the patient's skin (i.e. no acoustic
gel is applied)? - CORRECT ANSWER-Sound
will scatter and no image will be produced
What is a pulser? - CORRECT ANSWER-Part
of the beam former that generates the
voltage to excite the piezoelectric element
so that it produces sound pulse
What does the pulser determine? -
CORRECT ANSWER-- The amplitude of the
voltage spike applied to the element
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