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Penny SPI review Questions + Answers Graded A+
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What will happen to the patients body is HE/SHE is in shock? - ️️drop in blood pressure decreased respiration tachycardia chest pain loss of mental alertness What describes the distance from the beginning of a cycle to the end of that cycle? - ️️wavelength What are the three primary...

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  • October 29, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Penny SPI review questions
What will happen to the patients body is HE/SHE is in shock? - ✔️✔️drop in blood
pressure
decreased respiration
tachycardia
chest pain
loss of mental alertness

What describes the distance from the beginning of a cycle to the end of that cycle? -
✔️✔️wavelength

What are the three primary acoustic variables? - ✔️✔️pressure, density,
distance(particle motion)

What is the multipath artifact? - ✔️✔️artifact caused by the sound beam bouncing off
several different reflectors

What is the typical value of PRF in diagnostic ultrasound? - ✔️✔️1000-10,000 Hz or 1-
10 KHz

What are specular reflections? - ✔️✔️reflections that occur when the sound impinges
upon a large, smooth reflector at a 90 degree angle.

What are non-specular reflections? - ✔️✔️reflectors that are smaller than the
wavelength of the incident beam

Half-intensity depth - ✔️✔️the depth at which sound has lost half of its intensity

phase quadrature - ✔️✔️the component of the Doppler device that determines positive
opposed to negative frequency shifts and, therefore, direction of blood flow

Fast Fourier Transform (FFT) - ✔️✔️a mathematical process used for analyzing and
processing the Doppler signal to produce the spectral waveform

What is enhancement caused by? - ✔️✔️weakly attenuating structures

What reduces pulse duration? - ✔️✔️damping

What are harmonic signals? - ✔️✔️the result of sound traveling through the tissue and
inducing a vibration?

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