1. A method for producing a combined peak display image with reduced distortion due to motion of anatomical structures comprising: determining a number of ultrasound image frames to be used in constructing said combined peak display image; collecting ultrasound image frames, until said number of image frames has been collected, each of said image frames having a matrix of pixels; selecting a peak intensity value for each corresponding pixel from amongst said image frames; constructing said combined peak display image with said peak intensity value for each corresponding pixel from amongst said image frames; and displaying said combined peak display image on a monitor.