The effect of angular extent on reconstructed image quality in tomosynthesis A tissue sample example.

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Presentation transcript:

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 Tomosynthesis (P=11, 22°) 300μm × 300 μm × 600 μm voxels Relative Dose: 1 Constant Exposure/Projection CT (P=93, 186°) 300μm × 300 μm × 600 μm voxels Relative Dose: 10

Tissue Imaging Angular Spacing, Δθ=2°

Less clutter in background, better contrast More artifacts, Background tissue partly suppressed

Phantom Development Background complexity phantom 6 acetate beads ( mm) Natural sea sponge (including coral pieces) in corn oil Evaluating the Effect of Dose on Reconstructed Image Quality in Digital Breast Tomosynthesis, M. P. Kempston et al., IWDM 2006 Poster Session

Phantom Development