1. A method for producing a 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 a 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 value for each pixel of said peak display image from amongst said image frames; constructing said peak display image with said peak value for each pixel; and displaying said peak display image on a monitor.