Fig. 3.
The information source decomposition applied to the ROI experiment using PIR-PLE. The two decomposition terms F(y) and G(μP) along with their sum (the predicted reconstruction, μ̂D). The colorized source map combining F(y) and G(μP) in a single image conveys which features arise mainly from the prior image (red) and which arise largely from the newly acquired data (cyan/gray). The reconstruction is seen to rely more heavily on prior image information in regions outside the scanned region-of-interest (indicated by the dashed white circle).