Question

If all other factors remain unchanged what happens to the duty factor when the sonographer uses a new transducer with a long pulse duration?

A. Increases
B. Decreases
C. Remains the Same

Answer 1

When a sonographer uses a transducer with a long pulse duration with all other factors unchanged, the duty factor will increase because the duty factor is directly proportional to pulse duration.

Step-by-step explanation:

If a sonographer uses a new transducer with a longer pulse duration and all other factors remain unchanged, the duty factor will increase. Duty factor is defined as the percentage of time that the ultrasound machine is actually transmitting a pulse. It is calculated by dividing the pulse duration by the pulse repetition period (the time from the start of one pulse to the start of the next). Therefore, if the pulse duration increases but the pulse repetition period remains constant, the ratio increases, leading to an increased duty factor.