Wall Filter - Video Lesson

Hey, everybody. Welcome to today's lesson on Doppler ultrasound. This lesson focuses on the wall filter, a crucial tool for optimizing Doppler images. We will define the wall filter, explain its function, and discuss how its settings impact Doppler imaging. Let's get started. The wall filter removes low frequency Doppler signals associated with tissue motion and slow moving structures. In other words, the wall filter removes the color from slow moving reflectors like vessel walls and vibrating tissues. These signals often referred to as clutter can interfere with the accurate visualization of blood flow. As part of this process of removing this clutter, the wall filter sets a threshold frequency. Signals below this frequency are rejected, which prevents tissue motion artifacts from being displayed, allowing for a clearer representation of blood flow. The setting of the wall filter also plays a critical role in determining the visibility of different flow patterns. The key impact of wall filter