6 Range Equation

Question 1

What is the “go-return time” or time-of-flight or round trip time?

Answer 1

The time needed for a pulse to travel to and from the transducer and the reflector

Question 2

What are directly related to each other since average speed of sound in soft tissue is known?

Answer 2

Time-of-flight and distance that sound travels in the body are directly related

Question 3

What is the 13 microsecond rule?

Answer 3

In soft tissue, every 13 usec of go-return time means the reflector is 1 cm deeper in the body

Question 4

How is reflector depth and total distance traveled related?

Answer 4

Total distance traveled is twice the reflector depth

Question 5

List the equation for speed.

Answer 5

Speed = distance/time