Ultrasound physics review Study guides, Class notes & Summaries

Midterm Review (ch 1-12 Ultrasound Physics) Exam Questions Containing 277 terms with Solutions/ Already Graded A+ 2024.

When will the Doppler shift be the highest? A.when the beam is parallel to the direction of flow B.when the beam is at a 45 degree angle to flow C.when the beam is perpendicular to the direction of flow D. Doppler shift is unrelated to beam angle Correct Answer: A.when the beam is parallel to the direction of flow Which of the following best describes the principles of hemodynamics? -The pressure difference required for blood to flow -The pressure created in a fluid system -A fluid's...

SPI Ultrasound Physics Review Exam - Questions and Answers Relates to likelihood of harmful bio effects from cavitation Mechanical index Predicts maximum temperature increase Thermal index Measures output intensity of the beam Hydrophone Region of increased brightness due to higher intensities in focal zone Focal banding Occurs when sound travels through a medium with a lower attenuation rate than the surrounding tissue Enhancement Beam travels through an area of high attenuation Shadowing Bea...

During performance of an obstetric ultrasound exam, you adjust the system parameters to improve the image. Which of the following parameters would increase acoustic exposure? A. Increase receiver gain B. Increase TGC C. Increase frequency D. Increase transmit power E. Increase frame averaging (persistence) - Increase transmit power To minimize the risk of biologic effects of ultrasound to the fetus, which imaging mode tradeoff would be most applicable? - Use M-mode instead of pulsed-wave...

SPI ULTRASOUND PHYSICS REVIEW

During performance of an obstetric ultrasound exam, you adjust the system parameters to improve the image. Which of the following parameters would increase acoustic exposure? A. Increase receiver gain B. Increase TGC C. Increase frequency D. Increase transmit power E. Increase frame averaging (persistence) - Increase transmit power To minimize the risk of biologic effects of ultrasound to the fetus, which imaging mode tradeoff would be most applicable? - Use M-mode instead of pulsed-wave...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

What is frequency determined by? - The source, thickness of piezoelectric element and propagation speed to a lesser degree Thicker element is equal to ________ frequencies - Lower What is the reciprocal of frequency and what is the symbol - Period, T The time it takes for 1 cycle to occur - Period What is propagation speed determined by - Stiffness and density of the medium Propagation speed of sound through soft tissue - 1,540 m/s Increasing the stiffness of a tissue does what to the pro...

What is frequency determined by? - The source, thickness of piezoelectric element and propagation speed to a lesser degree Thicker element is equal to ________ frequencies - Lower What is the reciprocal of frequency and what is the symbol - Period, T The time it takes for 1 cycle to occur - Period What is propagation speed determined by - Stiffness and density of the medium Propagation speed of sound through soft tissue - 1,540 m/s Increasing the stiffness of a tissue does what to the pro...

What is frequency determined by? - Answer The source, thickness of piezoelectric element and propagation speed to a lesser degree Thicker element is equal to ________ frequencies - Answer Lower What is the reciprocal of frequency and what is the symbol - Answer Period, T The time it takes for 1 cycle to occur - Answer Period What is propagation speed determined by - Answer Stiffness and density of the medium Propagation speed of sound through soft tis...