Abstract
The decrease of the spatial resolution and the reduction of statistical error due to smoothing procedures with "unity" matrices, applied to scintigraphic images were analyzed. A quantitative relation was obtained between the resolution decrease factor kR and the product of the error reduction factor and the linear size of the picture element (m . kf). The numerical values of kR for the case of single smoothing with "unity" matrices of any size were compared with those for an n-fold smoothing. It was shown that the latter is more advantageous, i.e. it give lower values of the factor kR for the same values of (m . kf).
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