Measuring Intensity - Video Lesson

Welcome back everybody to our series on sound beam intensity. Understanding the intensity of the sound beam in sonography is essential for both optimizing image quality and limiting bio effects. In this lesson, we'll explore how intensity changes with factors like frequency, amplitude, and focus. We'll also clarify some common misconceptions about intensity, and learn the terms for key intensity parameters. Let's start with a reminder of the definition of intensity, and how it is measured. Intensity is the concentration of power in a specific area of the ultrasound beam. It tells us how much energy is being delivered to the tissues. Intensity is typically measured in milliwatts per square centimeter, and is determined by the equation intensity equals power divided by the total beam area. Think of it like a flashlight. If you focus the beam, the light is more intense in one spot. Similarly, an ultrasound beam's intensity.