Wall filtering is a very important technique in color flow imaging systems. Unfortunately, wallfilter usually induces a bias to the estimation of blood parameters.
壁滤波是彩色血流成像系统中一项非常重要的技术，但是任何壁滤波器都会对血流参数的估计引入偏差。
2
A single filter bag dust collector and tank wall friction damage.
单个有过滤袋和除尘器箱壁磨擦破损的。
3
In medical Doppler ultrasound systems, a high-pass filter is usually employed to remove wall clutter components which may also remove the information of the low velocity blood flow.