Attenuation (Factors) - Video Lesson

Hey everyone. Welcome back to this lesson on sound and tissue interactions in medical sonography. This video focuses on attenuation. We will discuss the different processes of attenuation, how it affects signal strength, and how to evaluate its effect on image formation. First, let's discuss attenuation. Attenuation is the reduction in intensity of the ultrasound beam as it propagates through tissue. As the ultrasound signal travels in the body, it encounters different types of tissue and is attenuated through these interactions, reducing the signal. Imagine you're shouting instructions across a crowded room. Some of your voice's energy is absorbed by the people in the room. Other parts of your voice bounce back when they hit a wall, and some of it scatters as it moves through the noisy environment. By the time your voice reaches the other