The typical value of pulse repetition frequency is?

The typical value of pulse repetition frequency is?

• A. 100 to 1,000 Hz
• B. 1,000 to 10,000 Hz
• C. 10,000 to 100,000 Hz
• D. 100,000 to 1,000,000 Hz

Answer: (B)

Pulse repetition frequency is the number of ultrasound pulses emitted each second. In ultrasound imaging, PRF sets how often frames can be formed: higher PRF increases frame rate but reduces the maximum depth you can reliably image because echoes from deeper tissue take longer to return. Clinically, PRF is typically a few thousand pulses per second, commonly about 1,000 to 10,000 Hz. This range provides a practical balance between a solid frame rate and adequate imaging depth, which is why it’s considered the typical value.

Pulse repetition frequency is the number of ultrasound pulses emitted each second. In ultrasound imaging, PRF sets how often frames can be formed: higher PRF increases frame rate but reduces the maximum depth you can reliably image because echoes from deeper tissue take longer to return. Clinically, PRF is typically a few thousand pulses per second, commonly about 1,000 to 10,000 Hz. This range provides a practical balance between a solid frame rate and adequate imaging depth, which is why it’s considered the typical value.