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ch 7 Range Equation

  1. go return time
    or time of flight
    time from pulse creation to pulse reception
  2. time of flight and depth are
    directly related
  3. depth of reflector formula
    depth (mm) = 1.54mm/us x go return time (us) / 2
  4. 13 microsecond rule
    for every 13 us of go-return time the object is 1 cm deeper in soft tissue

    eg. 2cm = 26us
  5. prp in soft tissue
    PRP (us) = imaging depth (cm) x 13us
  6. prp and image depth relationship
    directly related
  7. prf in soft tissue
    PRF (Hz)= 77,000cm/s / imagine depth (cm)
  8. prf and imaging depth relationship
    inversely related
  9. range equation determines
    depth of reflector
  10. range
    depth
  11. range equation in soft tissue
    depth= .77 mm/us x go return time
Author
rbeacr
ID
141815
Card Set
ch 7 Range Equation
Description
Range Equation
Updated

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