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URR SPI Questions with 100% Correct Answers | Latest Update | Verified
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give the correct order of receiver operations - 1. amplification 2. compensation 3. compression 4. demodulation 5. reject (low or high) frequency and (low or high) amplitude, will cause an increase in the mechanical index and the risk for cavitation - low frequency, high amplitude give the c...

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  • August 25, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
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  • urr spi

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  • URR SPI

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URR SPI questions

give the correct order of receiver operations - 1. amplification

2. compensation

3. compression

4. demodulation

5. reject



(low or high) frequency and (low or high) amplitude, will cause an increase in the mechanical index and
the risk for cavitation - low frequency, high amplitude



give the correct units for each:

circumference:

area:

volume: - circumference: cm

area: cm squared (cm^2)

volume: cm cubed (cm^3)



when PRP increases, frame rate .... - increases



period X number of cycles in a pulse = - pulse duration



2D imaging is best when the beam is at a ___ degree angle to the structure - 90 degree



Doppler evaluation is best when the flow is at a ____ degree angle to the ultrasound beam (cursor) -
0 degree

, if you increase the beam frequency, then your spatial pulse length gets _______ (shorter or longer) -
shorter



if you decrease the transmit frequency, then the beam width will (increase or decrease) - increase



when an image is frozen, an elipse can be used to measure the ____ of a structure - area



the time it takes for one pulse to occur - pulse duration



wider dynamic range, means more shades of grey, and a (lower or higher) contrast - lower



narrow dynamic range, means few shades of grey, and a (lower or higher) contrast - higher



LCD monitor accept the digital signal and do not need a ..... - digital to analog converter



flow is halved when length is - doubled



increased vessel length, increases resistance, which (increases or decreases) flow? - decreases



_____ loss is associated with acceleration and deceleration - inertia



flow is halved when resistance is - doubled



true or false? a successful doppler exam may be performed regardless of hematocrit? - true



maximum transmission will occur when a medium has an identical ______ as the initial medium -
impedance



snells law defines the physics of - refraction

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