METHODS Two restoration filters that adapt to the images being processed were investigated,
for use as two-dimensional window functions for preprocessing SPECT images and in …

To improve the quality of digital nuclear medicine images, we have developed a new
implementation of the Wiener restoration filter. The Wiener filter uses as its optimality criterion the …

… Subsection B shows the Metz filter and resulting images for the original count-dependent
Metz filter formed for this study (4). Subsection C shows these for the Metz filter selected …

The formulation of an" optimal" filter for improving the quality of digitally recorded nuclear
medicine images is reported in this paper. The method forms a Metz filter for each image based …

MATERIALS AND METHODS Determination of Modulation Transfer Functions In digital image
restoration, an estimate of the mod ulation transfer function (MTF) is used to characterize …

A systematic investigation was conducted of how a number of parameters which alter the
system modulation transfer function (MTF) influence the count‐dependent Metz filter. Since …

Image restoration using the constrained least‐squares (CLS) method theoretically adapts to
the image being processed. In addition, it only requires knowing the modulation transfer …

A data reprojection algorithm has been developed for use in single photon emission computed
tomography on an array processor equipped computer system. The algorithm makes use …

Image restoration methods have been shown to increase the contrast of nuclear medicine
images by decreasing the effects of scatter and septal penetration. Image restoration can also …

An automatically computable fidelity measure which correlates well with observer preference
is needed to facilitate the optimization of image processing methods. This study evaluates …