Pulse repetition frequency (PRF) is measured in which units?

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Study for Edelmen's Sonography Principles and Instrumentation Exam. Prepare with flashcards and multiple choice questions, including hints and explanations for each question. Ace your SPI exam!

Multiple Choice

Pulse repetition frequency (PRF) is measured in which units?

Explanation:
PRF measures how many ultrasound pulses are emitted each second, so the natural unit is a rate per time. That means pulses per second, i.e., hertz. Microseconds would describe the time between pulses (the pulse repetition interval), not the rate. MHz describes the transducer’s carrier frequency, not how often pulses are emitted. Per minute would be a valid rate, but the standard unit used is per second. Therefore, Per Second is the correct unit.

PRF measures how many ultrasound pulses are emitted each second, so the natural unit is a rate per time. That means pulses per second, i.e., hertz. Microseconds would describe the time between pulses (the pulse repetition interval), not the rate. MHz describes the transducer’s carrier frequency, not how often pulses are emitted. Per minute would be a valid rate, but the standard unit used is per second. Therefore, Per Second is the correct unit.

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