Ultrasound Technician Exam Questions
and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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Question 1
What type of wave is used in diagnostic ultrasound imaging?
A. Electromagnetic waves
B. Sound waves
C. Light waves
D. Radio waves
Correct Answer: B
Rationale: Ultrasound uses high-frequency sound waves, not electromagnetic or
light waves, to create images of internal structures.
Question 2
What does ultrasound imaging primarily depend on?
A. Radiation absorption
B. Sound wave reflection
C. Magnetic fields
D. Electrical impulses only
Correct Answer: B
Rationale: Ultrasound images are formed from reflected sound waves (echoes)
returning from tissues.
,Question 3
What is the unit of frequency used in ultrasound?
A. Hertz (Hz)
B. Joules
C. Watts
D. Tesla
Correct Answer: A
Rationale: Frequency of sound waves is measured in Hertz (cycles per second).
Question 4
Which frequency range is commonly used in diagnostic ultrasound?
A. 20–20,000 Hz
B. 1–20 MHz
C. 1–20 kHz
D. 100–500 Hz
Correct Answer: B
Rationale: Diagnostic ultrasound typically uses 1–20 MHz, much higher than
audible sound.
Question 5
What is the main function of a transducer?
A. Stores images
B. Converts electrical energy to sound waves and back
C. Measures blood pressure
D. Produces X-rays
Correct Answer: B
Rationale: The transducer both emits sound waves and receives echoes,
converting them into electrical signals.
,Question 6
What is echogenicity?
A. Speed of sound
B. Ability of tissue to reflect sound
C. Type of ultrasound machine
D. Blood flow speed
Correct Answer: B
Rationale: Echogenicity describes how much sound a tissue reflects.
Question 7
What is an anechoic structure?
A. Highly reflective
B. Solid tissue
C. Appears black on ultrasound
D. Bone tissue
Correct Answer: C
Rationale: Anechoic means no internal echoes, appearing black (e.g., fluid-filled
structures).
Question 8
What does hyperechoic mean?
A. No echoes
B. Few echoes
C. Very bright echoes
D. No sound transmission
Correct Answer: C
Rationale: Hyperechoic structures produce strong echoes and appear
bright/white.
, Question 9
What does hypoechoic mean?
A. Very bright
B. Fewer echoes than surrounding tissue
C. No sound reflection
D. Bone density
Correct Answer: B
Rationale: Hypoechoic structures appear darker than surrounding tissue due to
fewer echoes.
Question 10
What is the speed of sound in soft tissue approximately?
A. 500 m/s
B. 1540 m/s
C. 3000 m/s
D. 10,000 m/s
Correct Answer: B
Rationale: Ultrasound assumes a standard speed of 1540 m/s in soft tissue.
Question 11
What is attenuation in ultrasound?
A. Increase in sound strength
B. Loss of sound energy as it travels
C. Image sharpening
D. Doppler shift
Correct Answer: B
Rationale: Attenuation is the reduction of sound intensity as it passes through
tissue.
and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
Question 1
What type of wave is used in diagnostic ultrasound imaging?
A. Electromagnetic waves
B. Sound waves
C. Light waves
D. Radio waves
Correct Answer: B
Rationale: Ultrasound uses high-frequency sound waves, not electromagnetic or
light waves, to create images of internal structures.
Question 2
What does ultrasound imaging primarily depend on?
A. Radiation absorption
B. Sound wave reflection
C. Magnetic fields
D. Electrical impulses only
Correct Answer: B
Rationale: Ultrasound images are formed from reflected sound waves (echoes)
returning from tissues.
,Question 3
What is the unit of frequency used in ultrasound?
A. Hertz (Hz)
B. Joules
C. Watts
D. Tesla
Correct Answer: A
Rationale: Frequency of sound waves is measured in Hertz (cycles per second).
Question 4
Which frequency range is commonly used in diagnostic ultrasound?
A. 20–20,000 Hz
B. 1–20 MHz
C. 1–20 kHz
D. 100–500 Hz
Correct Answer: B
Rationale: Diagnostic ultrasound typically uses 1–20 MHz, much higher than
audible sound.
Question 5
What is the main function of a transducer?
A. Stores images
B. Converts electrical energy to sound waves and back
C. Measures blood pressure
D. Produces X-rays
Correct Answer: B
Rationale: The transducer both emits sound waves and receives echoes,
converting them into electrical signals.
,Question 6
What is echogenicity?
A. Speed of sound
B. Ability of tissue to reflect sound
C. Type of ultrasound machine
D. Blood flow speed
Correct Answer: B
Rationale: Echogenicity describes how much sound a tissue reflects.
Question 7
What is an anechoic structure?
A. Highly reflective
B. Solid tissue
C. Appears black on ultrasound
D. Bone tissue
Correct Answer: C
Rationale: Anechoic means no internal echoes, appearing black (e.g., fluid-filled
structures).
Question 8
What does hyperechoic mean?
A. No echoes
B. Few echoes
C. Very bright echoes
D. No sound transmission
Correct Answer: C
Rationale: Hyperechoic structures produce strong echoes and appear
bright/white.
, Question 9
What does hypoechoic mean?
A. Very bright
B. Fewer echoes than surrounding tissue
C. No sound reflection
D. Bone density
Correct Answer: B
Rationale: Hypoechoic structures appear darker than surrounding tissue due to
fewer echoes.
Question 10
What is the speed of sound in soft tissue approximately?
A. 500 m/s
B. 1540 m/s
C. 3000 m/s
D. 10,000 m/s
Correct Answer: B
Rationale: Ultrasound assumes a standard speed of 1540 m/s in soft tissue.
Question 11
What is attenuation in ultrasound?
A. Increase in sound strength
B. Loss of sound energy as it travels
C. Image sharpening
D. Doppler shift
Correct Answer: B
Rationale: Attenuation is the reduction of sound intensity as it passes through
tissue.
