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Computerized breast phantom with a contrast-detail (CD) insert. The displayed images are the image of the phantom (top, left), the ROI focused on the CD insert (top, right), an unregularied FBP reconstruction (bottom, left), and a regularized FBP image (bottom, right). For reference, the RMSE values of the unregularized and regularized FBP images are 0.0198 and 0.01155 cm−1, respectively. The gray scale window for all panels is [0.174,0.253]cm−1.
