Which term describes a single ultrasound burst that contains several cycles traveling as a unit?

Which term describes a single ultrasound burst that contains several cycles traveling as a unit?

• A. Pulse duration
• B. Pulse
• C. PRP
• D. Q factor

Answer: (B)

In ultrasound, energy is emitted in bursts. A single burst that contains several cycles traveling together is called a pulse. That pulse is the discrete unit of emission, separated from echoes by quiet time. Pulse duration is how long that burst lasts while the transducer is emitting, measured in time. PRP (pulse repetition period) is the time from the start of one pulse to the start of the next. Q factor describes the transducer’s resonance and bandwidth characteristics, not the burst itself. So the term that best names the single burst traveling as a unit is pulse.

In ultrasound, energy is emitted in bursts. A single burst that contains several cycles traveling together is called a pulse. That pulse is the discrete unit of emission, separated from echoes by quiet time.

Pulse duration is how long that burst lasts while the transducer is emitting, measured in time. PRP (pulse repetition period) is the time from the start of one pulse to the start of the next. Q factor describes the transducer’s resonance and bandwidth characteristics, not the burst itself. So the term that best names the single burst traveling as a unit is pulse.