ARDMS SPI Actual Exam and Practice
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and Correct Detailed Answers| Brand
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1. What is ultrasound?
A. Electromagnetic wave
B. Mechanical wave
C. Electrical current
D. Magnetic field
Answer: B
Rationale: Ultrasound is a mechanical wave requiring a medium to travel.
2. The unit of frequency is:
A. Hertz
B. Decibel
C. Watt
D. Tesla
Answer: A
Rationale: Frequency is measured in Hertz (Hz).
3. Wavelength is defined as:
A. Time per cycle
B. Distance per cycle
C. Energy per cycle
D. Speed of sound
,Answer: B
Rationale: Wavelength is the distance of one complete cycle.
4. Speed of sound in soft tissue is approximately:
A. 1540 m/s
B. 1000 m/s
C. 3000 m/s
D. 500 m/s
Answer: A
Rationale: Standard assumed speed in soft tissue is 1540 m/s.
5. Frequency and wavelength are:
A. Directly related
B. Inversely related
C. Unrelated
D. Equal
Answer: B
Rationale: As frequency increases, wavelength decreases.
6. Piezoelectric effect refers to:
A. Light production
B. Sound reflection
C. Voltage from pressure
D. Heat production
Answer: C
Rationale: Certain crystals generate voltage when mechanically stressed.
7. The main purpose of a transducer is to:
, A. Store images
B. Convert energy
C. Amplify sound
D. Filter noise
Answer: B
Rationale: It converts electrical energy to sound and back.
8. Attenuation refers to:
A. Increase in sound strength
B. Loss of sound energy
C. Image brightness
D. Frequency increase
Answer: B
Rationale: Attenuation is reduction of beam intensity.
9. The greatest cause of attenuation is:
A. Reflection
B. Absorption
C. Refraction
D. Transmission
Answer: B
Rationale: Absorption converts sound to heat.
10. Reflection occurs when sound:
A. Passes through tissue
B. Returns to transducer
C. Changes frequency
D. Is absorbed
Tests Newest with Complete Questions
and Correct Detailed Answers| Brand
New Version!
1. What is ultrasound?
A. Electromagnetic wave
B. Mechanical wave
C. Electrical current
D. Magnetic field
Answer: B
Rationale: Ultrasound is a mechanical wave requiring a medium to travel.
2. The unit of frequency is:
A. Hertz
B. Decibel
C. Watt
D. Tesla
Answer: A
Rationale: Frequency is measured in Hertz (Hz).
3. Wavelength is defined as:
A. Time per cycle
B. Distance per cycle
C. Energy per cycle
D. Speed of sound
,Answer: B
Rationale: Wavelength is the distance of one complete cycle.
4. Speed of sound in soft tissue is approximately:
A. 1540 m/s
B. 1000 m/s
C. 3000 m/s
D. 500 m/s
Answer: A
Rationale: Standard assumed speed in soft tissue is 1540 m/s.
5. Frequency and wavelength are:
A. Directly related
B. Inversely related
C. Unrelated
D. Equal
Answer: B
Rationale: As frequency increases, wavelength decreases.
6. Piezoelectric effect refers to:
A. Light production
B. Sound reflection
C. Voltage from pressure
D. Heat production
Answer: C
Rationale: Certain crystals generate voltage when mechanically stressed.
7. The main purpose of a transducer is to:
, A. Store images
B. Convert energy
C. Amplify sound
D. Filter noise
Answer: B
Rationale: It converts electrical energy to sound and back.
8. Attenuation refers to:
A. Increase in sound strength
B. Loss of sound energy
C. Image brightness
D. Frequency increase
Answer: B
Rationale: Attenuation is reduction of beam intensity.
9. The greatest cause of attenuation is:
A. Reflection
B. Absorption
C. Refraction
D. Transmission
Answer: B
Rationale: Absorption converts sound to heat.
10. Reflection occurs when sound:
A. Passes through tissue
B. Returns to transducer
C. Changes frequency
D. Is absorbed
