RIU 320 Lecture Notes - Lecture 26: Pulse Repetition Frequency, Medical Ultrasound, Sonographer
2 May 2020
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The five additional parameters are needed to completely describe pulsed sound: pulse duration, pulse repetition period, pulse repetition frequency, duty factor, spatial pulse length. Pulsed ultrasound: in diagnostic ultrasound, continuous wave sound cannot create anatomic images. Rather, imaging systems produce short bursts, or pulses, of acoustic energy to create every picture of anatomy: what is the pulsed sound, a pulse of ultrasound is a collection of cycles that travel together. A pulse must have a beginning and an end. Although a pulse is made up of individual cycles, the entire pulse moves as a single unit: pulsed ultrasound has two components, transmit, talking, or on time, receive, listening, or off time. Iii: each particular ultrasound transducer emits a pulse with a fixed duration. The pulse duration cannot change for that transducer: pulse duration- is the actual time from the start of a pulse to the end of that pulse.
