Range Equation Flashcards
1
Q
elapsed time from pulse creation to a pulse reception
A
go return time
time of flight
PRP
2
Q
relationship between time of flight and depth
A
direct
3
Q
how do we calculate depth of a reflector
A
depth (mm) = 1.54 mm/us x go return time (us) / 2
4
Q
what is the 13 microsecond rule
A
for every 13 microseconds of go return time, object creating the reflection is 1 cm deeper in the body
5
Q
since a pulse travels to the reflector and back to the transducer, how do we find total distance the wave travels
A
reflector depth x 2
6
Q
relationship between PRP and depth
A
direct
7
Q
how to calculate PRP
A
PRP (us) = imaging depth (cm) x 13 us/cm
8
Q
how is PRF related to depth
A
inverse
9
Q
equation for PRF
A
PRF (Hz) = 77,000 cm per second / depth (cm)
