1. A method for reducing reconstruction artifacts in a combined image constructed of a plurality of images, the method comprising: a) selecting a boundary pixel value of a selected range of pixel values, wherein selecting the boundary pixel value comprises selecting one of: (i) a mean pixel value of a first image; or (ii) a median pixel value of the first image; b) identifying pixels in each of the plurality of images, each of the identified pixels having a pixel value within the selected range, the plurality of images being for a region of interest acquired at different angles; c) replacing the identified pixels with a substitute pixel value; and d) combining the plurality of images comprising the substitute pixel value to form a combined image having reduced reconstruction artifacts.