1. A method of displaying an image comprising a plurality of image pixels, each image pixel having an associated CT number, said method comprising: receiving image data acquired using a computed tomography scanner; performing a smoothing operation on the image to generate a smoothed image dataset comprising a plurality of smoothed image pixels; performing a deconvolution operation on the image to generate a deconvolution image dataset comprising a plurality of deconvolution image pixels; assigning a filtered CT number to the plurality of smoothed image pixels that corresponds to respective pixels of the smoothed image dataset if the smoothed image pixel CT number is less than or equal to a first predetermined threshold; assigning a filtered CT number to the plurality of smoothed image pixels that corresponds to respective pixels of the image if the smoothed image pixel CT number is greater than or equal to a second predetermined threshold; assigning a filtered CT number to the plurality of smoothed image pixels that corresponds to respective pixels of the deconvolution image dataset if the smoothed image pixel CT number is greater than the first predetermined threshold and less than the second predetermined threshold; generating an output image based on the filtered CT number of the plurality of smoothed image pixels.