1. A method of masking faulty pixels in an imager, the method comprising: (a) exposing the imager to radiation; (b) identifying a faulty pixel in the imager; (c) determining outputs of a plurality of other pixels located about the faulty pixel; and (d) masking an output of the faulty pixel using the outputs of the plurality of other pixels, whereby a masked output of the faulty pixel can be provided in an image produced by the imager.