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The time from the beginning of a pulse until its end is ______________? - ️️pulsed duration If the frequency of US is increased from 0.77MHz to 1.54MHz, what happens to the propagation speed? - ️️remains the same All of the following are true EXCEPT: - ️️two waves with identical frequencies must interfere constructively As a result of ______________, the propagation speed increases - ️️decreasing compressibility and density Sound waves are: - ️️longitudinal, mechanica...

SPI Practice Test Questions and Answers (100% Pass) When the ELASTICITY of a medium is HIGH, the _____ is HIGH - stiffness - prop. speed - compressibility - reflectivity compressibility What term describes the # of cycles that an acoustic variable completes in a second? - period - freq. - PRP - variable rate Master01 |Excellent Study Material| Latest update 1 | P a g e | © copyright Master01| Grade A+ freq. What happens to venous flow return to the HEART when a person...

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Reducing the likelihood of bioeffects from acoustic energy is the mission of the: A. Nyquist limit B. Reynolds number C. Huygens principle D. ALARA principle E. Poiseuille principle -answer- D. ALARA principle The number of cycles in a pulse directly related to the: A. Duty factor B. SPL C. operating frequency D. PRF E. propagation speed of the medium -answer- B. SPL The Doppler shift frequency is proportional to the: A. Cosine values B. Doppler angle C. Operat...

SPI Practice Test Questions With 100% Correct Answers Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution - ANS-d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. focusing - ANS-d. Damping in a transducer a. reduces the number of cycles in a pulse and increases the quality factor b. increases the number of cycles in a pulse and ...

Sound waves are: - longitudinal, mechanical The speed of sound in soft tissue is closest to: - 1,500 m/s The frequency closest to the lower limit of ultrasound is: - 15,000 Hz Which is not an acoustic variable? - intensity The effects of soft tissue on ultrasound are called: - acoustic propagation properties All of the following are true EXCEPT: - two waves with identical frequencies must interfere constructively Put in decreasing order: deci, deca, micro, centi - deca, deci, c...

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While performing a sonographic examination, you have performed both preprocessing and postprocessing functions. Which of the following functions is postprocessing? A. Write-zoom magnification B. Frequency change C. Gray-scale map assignment D. Scan line density E. Acoustic power output - ️️C You have chosen to enlarge an ultrasound image with a read magnification. Which of the following is NOT related to read magnification? A. Preprocessing B. Increased pixel size C. Performance o...

SPI PRACTICE QUESTIONS WITH 100% CORRECT ANSWERS ALREADY PASSED A+ 2024 Sound waves are: - ANS-longitudinal, mechanical The speed of sound in soft tissue is closest to: - ANS-1,500 m/s The frequency closest to the lower limit of ultrasound is: - ANS-15,000 Hz Which is not an acoustic variable? - ANS-intensity The effects of soft tissue on ultrasound are called: - ANS-acoustic propagation properties All of the following are true EXCEPT: - ANS-two waves with identical frequencies mus...