Recently it has become feasible to dramatically shorten the time necessary for acquisition of a nuclear medicine SPECT study. This has occurred with the introduction of new image reconstruction software which includes resolution recovery correction (so called "collimator de-blurring"). Since this approach results in significant improvement of image resolution, many centers are currently looking at the feasibility of using this new technique to reduce imaging times. For example, its use has been investigated for nuclear cardiac scans with acquisition times shortened by half.