URR SPI questions with correct
answers
give the correct units for each:
circumference:
area:
volume: - Answer-circumference: cm
area: cm squared (cm^2)
volume: cm cubed (cm^3)
when PRP increases, frame rate .... - Answer-increases
period X number of cycles in a pulse = - Answer-pulse durat...
wider dynamic range, means more shades of grey, and a (lower or higher) contrast -
Answer✔✔-lower
narrow dynamic range, means few shades of grey, and a (lower or higher) contrast -
Answer✔✔-higher
(low or high) frequency and (low or high) amplitude, will cause an increase in the
mechanical index and the risk for cavitation - Answer✔✔-low frequency, high
amplitude
LCD monitor accept the digital signal and do not need a ..... - Answer✔✔-digital to
analog converter
flow is halved when length is - Answer✔✔-doubled
increased vessel length, increases resistance, which (increases or decreases) flow? -
Answer✔✔-decreases
_____ loss is associated with acceleration and deceleration - Answer✔✔-inertia
flow is halved when resistance is - Answer✔✔-doubled
true or false? a successful doppler exam may be performed regardless of hematocrit? -
Answer✔✔-true
maximum transmission will occur when a medium has an identical ______ as the initial
medium - Answer✔✔-impedance
snells law defines the physics of - Answer✔✔-refraction
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