ARDMS SPI Exam Review TEST 2

August 16, 2017 By Rana Waqar Leave a Comment

1. Which of the following is described as the distance over which one cycle occurs?
- a. Pulse duration
- b. Duty factor
- c. Period
- d. Wavelength
2. All of the following are true of stiffness except:
- a. It is defined as the ability of an object to resist compression
- b. Stiffness and propagation speed are indirectly associated
- c. Increasing stiffness increases propagation speed
- d. Stiffness may also be referred to as elasticity
3. Areas of high pressure and density are referred to as:
- a. Compressions
- b. Rarefactions
- c. Condensations
- d. Rarefractions
4. Spatial pulse length can be calculated by:
- a. Multiplying the number of cycles times the frequency
- b. Dividing the period by the frequency
- c. Multiplying the number of cycles times the wavelength
- d. Dividing the number of cycles by the wavelength
5. Density is typically measured in:
- a. Kilograms per centimeter cubed
- b. Millimeters
- c. Watts per centimeter squared
- d. Pascals
6. As a sound wave travels through the human body, the intensity of the sound wave decreases as a result of:
- a. Attenuation
- b. Absorption
- c. Scattering
- d. All of the above
7. What is the total amount of attenuation that occurs if a 6.0-MHz sound beam travels through 4 cm of soft tissue?
- a. 24 dB
- b. 12 dB
- c. 6 dB
- d. None of the above
8. As imaging depth increases, pulse repetition period:
- a. Remains constant
- b. Increases
- c. Decreases
- d. Doubles
9. If pulse repetition frequency increases, then the duty factor:
- a. Remains constant
- b. Increases
- c. Decreases
- d. Doubles
10. The percentage of time that the ultrasound system is producing pulses of ultrasound describes the:
- a. Pulse repetition period
- b. Pulse duration
- c. Duty factor
- d. Pulse repetition frequency

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