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SPI Practice (ARDMS A & B) C What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A to which acoustic variable is pen...

ARDMS SPI STUDY GUIDE 2023 In soft tissue, if the frequency of a wave is increased the Propagation Speed (PS) will... Ans- Remain the Same because stiffness and density affect Propagation Speed. What is the audible range? Ans- 20-20,000Hz >20,000Hz=Ultrasound Frequency is measured in Ans- H...

ARDMS SPI Practice Exam B Which artifact is illustrated by this image? Ans- a) Shadowing b) Side Lobe c) Reverberation d) Mirroring What is increased if the pulse duration is decreased? Ans- a) Bandwidth b) Line Density c) Frame Rate d) Duty Factor What is the most appropriate action for t...

ARDMS- SPI The horizontal axis, or x-axis Ans- Runs side to side The vertical axis, or y-axis Ans- Runs up and down Unrelated Ans- Two items that are not associated Related or Proportional Ans- Two items that are associated or affiliated However, the relationship between the items does not hav...

SPI Practice Test Graded A+ Which of the following do the source and the medium determine? a. duty factor b. frequency c. propagation speed d. axial resolution ️d. Axial resolution is affected by all of the following EXCEPT a. frequency b. damping c. spatial pulse length d. foc...

SPI Practice Questions All Answers Correct 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 ...

ARDMS SPI Exam Graded A+ Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain ️a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital sca...

SPI MOCK EXAM VERIFIED ANSWERS 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 ...

SPI Practice Questions Answers A Which of these terms means 'many gray shades'? A wide dynamic range B bistable C high contrast D highly compressed signal E few choices ️A wide dynamic range Which of the following will result in the highest mechanical index? A high intensity and ...

SPI Mock Exam Verified Solutions 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 D. ALARA principle The number of cycles in a pulse directly related...

SPI Practice Test Already Graded A+ M mode ️which mode has time on one axis and depth on another? preprocessing ️write zoom is considered: improve, decrease ️increasing the color Doppler line density will _____ color Doppler resolution but will ______ the frame rate enhancement ️th...

SPI Review Questions Doppler Already Graded A+ According to the Bernoulli Principle, where will you find the lowest pressure in a vessel with stenosis? A. proximal to the stenosis B. distal to the stenosis C. in the collateral vessels D. at the site of stenosis ️D. at the site of stenos...

ARDMS SPI Exam Verified A+ What is the role of pulse duration in ultrasound imaging? ️️Pulse duration determines the amount of time an ultrasound pulse lasts, affecting axial resolution and overall image clarity. How does the wavelength impact image resolution in sonography? ️️A sh...

Edelmen's SPI Exam Review Guaranteed Success What is the relationship between frequency and wavelength in ultrasound? ️️Frequency and wavelength are inversely related; as frequency increases, wavelength decreases, enhancing resolution but reducing penetration depth. How does acoustic ...