The effect of angular extent on reconstructed image quality in tomosynthesis. A tissue sample example. Tissue Imaging Example. Lumpectomy, embedded in agar 47F, node negative 3.5 cm dia.; IDC, grade III. 67 mm. Whole Mount Histology Slide. Lumpectomy. Constant Exposure/Projection.
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A tissue sample example
Whole Mount Histology Slide
CT (P=93, 186°)300μm× 300 μm × 600 μm voxelsRelative Dose: 10
Tomosynthesis (P=11, 22°)300μm× 300 μm × 600 μm voxelsRelative Dose: 1
Angular Spacing, Δθ=2°
More artifacts, in tomosynthesis
Background tissue partly suppressed
Less clutter in background, better contrast
Background complexity phantom in tomosynthesis
6 acetate beads (1.5-8 mm)
Natural sea sponge (including coral pieces) in corn oilPhantom Development
Evaluating the Effect of Dose on Reconstructed Image Quality in Digital Breast Tomosynthesis, M. P. Kempston et al., IWDM 2006 Poster Session