ARDMS SPI Exam Review TEST 2August 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 durationb. Duty factorc. Periodd. Wavelength2. All of the following are true of stiffness except:a. It is defined as the ability of an object to resist compressionb. Stiffness and propagation speed are indirectly associatedc. Increasing stiffness increases propagation speedd. Stiffness may also be referred to as elasticity3. Areas of high pressure and density are referred to as:a. Compressionsb. Rarefactionsc. Condensationsd. Rarefractions4. Spatial pulse length can be calculated by:a. Multiplying the number of cycles times the frequencyb. Dividing the period by the frequencyc. Multiplying the number of cycles times the wavelengthd. Dividing the number of cycles by the wavelength5. Density is typically measured in:a. Kilograms per centimeter cubedb. Millimetersc. Watts per centimeter squaredd. Pascals6. As a sound wave travels through the human body, the intensity of the sound wave decreases as a result of:a. Attenuationb. Absorptionc. Scatteringd. All of the above7. 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 dBb. 12 dBc. 6 dBd. None of the above8. As imaging depth increases, pulse repetition period:a. Remains constantb. Increasesc. Decreasesd. Doubles9. If pulse repetition frequency increases, then the duty factor:a. Remains constantb. Increasesc. Decreasesd. Doubles10. The percentage of time that the ultrasound system is producing pulses of ultrasound describes the:a. Pulse repetition periodb. Pulse durationc. Duty factord. Pulse repetition frequency For More questions please join Our facebook group: https://www.facebook.com/groups/249298882082586/?ref=br_rs
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