Use of a Total Variation Minimization Iterative Reconstruction Algorithm to Evaluate Reduced Projections during Digital Breast Tomosynthesis

Figure 12

Comparisons of structural similarity among images obtained from each case and using each tomosynthesis reconstruction algorithm in the in-focus plane. The X-ray source was moved horizontally along the image. Images are in grayscale; white and black indicate high and low structural similarity, respectively. The window width and level in each display are varied to allow a visual comparison of the contrast and background gray level. Corresponding IR (MLEM, SART, and ASD-POCS) images are displayed at the same window width and level.