Which device generates the electric pulses to the crystal producing pulsed ultrasound waves, determines PRF, PRP and pulse amplitude, and adjusts PRF for imaging depth?

Which device generates the electric pulses to the crystal producing pulsed ultrasound waves, determines PRF, PRP and pulse amplitude, and adjusts PRF for imaging depth?

• A. Pulser aka transmitter
• B. Transducer
• C. Beam former
• D. Receiver

Answer: (A)

The pulser, also known as the transmitter, is the component that creates the electrical pulses sent to the transducer crystals. These pulses convert into the ultrasonic pulses that form the imaging beam. The pulser determines how often pulses are sent, which sets the pulse repetition frequency (PRF) and the corresponding pulse repetition period (PRP). It also controls the drive voltage, which sets the pulse amplitude. Importantly, the pulser can adjust PRF depending on imaging depth: deeper imaging requires longer delays for echoes to return, so the system may lower PRF (increase PRP) to avoid timing overlaps and ensure all echoes are received before the next pulse. The transducer is the crystal that converts between electrical energy and sound, the beam former handles the timing across elements, and the receiver processes echoes after they return.

The pulser, also known as the transmitter, is the component that creates the electrical pulses sent to the transducer crystals. These pulses convert into the ultrasonic pulses that form the imaging beam. The pulser determines how often pulses are sent, which sets the pulse repetition frequency (PRF) and the corresponding pulse repetition period (PRP). It also controls the drive voltage, which sets the pulse amplitude. Importantly, the pulser can adjust PRF depending on imaging depth: deeper imaging requires longer delays for echoes to return, so the system may lower PRF (increase PRP) to avoid timing overlaps and ensure all echoes are received before the next pulse. The transducer is the crystal that converts between electrical energy and sound, the beam former handles the timing across elements, and the receiver processes echoes after they return.