Pulsed Wave Parameters - Video Lesson

Hey, everybody. Welcome back to our course on ultrasound physics. This lesson begins our section on pulse waves. We'll cover terminology, key concepts related to pulse sound, and how different pulse parameters affect image quality. We'll also explore the relationships between pulse duration, spatial pulse length, and axial resolution, as well as the trade offs between resolution and penetration. Let's get started. First, let's discuss pulse sound. Pulsed sound refers to short bursts of acoustic energy rather than a continuous wave. Each pulse consists of a group of cycles which move together, travel through the medium, interact with tissues, and return as echoes to the transducer for image formation. Think about a pulse like a train. The train is made up of many cars, but moves together as a group. Each pulse also has a beginning and an end. Pulsed ultrasound is characterized by