Range Equation Flashcards
In soft tissue, every 13 µs of go return time means the reflector is how deep in the body?
In soft tissue, every 13 µs of the return time means the reflector is 1 cm deep in the body.
What is the time needed for a pulse to travel to and from the transducer and the reflector called?
Go return time, time of flight, or round trip time
If the time of flight is 26 µs, how deep is the reflector?
The reflector is 2 cm deep.
If the time of flight is 52 µs, what is the total distance traveled by the pulse?
If the time of flight is 52 µs, then the reflector must be 4 cm deep, therefore the total distance traveled by the pulse equals 8 cm.
If the round trip distance traveled by the pulse is 20 cm, how deep is the reflector and what is the time of flight for the pulse?
If the total distance traveled is 20 cm, then the reflector must be 10 cm deep. Since a reflector 1 cm deep has a time of flight of 13 µs, then the time of flight must equal 130 µs for a reflector that is 10 cm deep
A sound pulse emitted from the transducer travels in an ultrasound phantom, reflects off of pin A and returns to the transducer in 52 µs. How deep is pin A? What is the total distance that the pulse traveled?
In a 52 µs go return time, the pin is 4 cm deep in the Phantom. The pulse traveled a total distance of 8 cm; 4 cm into the Phantom and 4 cm out.
A soundwave is created by a transducer, reflects off an object, and returns to the transducer. The depth of the reflector is 10 cm. The round-trip time is two seconds. What is the speed of sound in the medium?
10 cm/s
Speed = distance/time
The total distance traveled is 20 cm. The time is two seconds. 20 cm/2s = 10 cm/s
