Overview of Ultrasound Imaging Systems and the Electrical Components Required for Main Subfunctions

By: John Scampini

Abstract: This application note is an introduction to ultrasound imaging systems. It discusses the trend towards smaller, lower cost, and more portable imaging solutions, while explaining what is required to maintain the performance and diagnostic capabilities found in larger cart-based systems. The system subfunctions and electrical components for an ultrasound system are outlined. This discussion focuses on transducers, high-voltage multiplexing, high-voltage transmitters, image-path receivers, digital beamformers, beamformed digital-signal processing, and display processing.