The effect of angular extent on reconstructed image quality in tomosynthesis
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The effect of angular extent on reconstructed image quality in tomosynthesis PowerPoint PPT Presentation


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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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The effect of angular extent on reconstructed image quality in tomosynthesis

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The effect of angular extent on reconstructed image quality in tomosynthesis

The effect of angular extent on reconstructed image quality in tomosynthesis

A tissue sample example


Tissue imaging 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

Lumpectomy

Constant Exposure/Projection

CT (P=93, 186°)300μm× 300 μm × 600 μm voxelsRelative Dose: 10

Tomosynthesis (P=11, 22°)300μm× 300 μm × 600 μm voxelsRelative Dose: 1


Tissue imaging

Tissue Imaging

Angular Spacing, Δθ=2°


The effect of angular extent on reconstructed image quality in tomosynthesis

More artifacts,

Background tissue partly suppressed

Less clutter in background, better contrast


Phantom development

Background complexity phantom

6 acetate beads (1.5-8 mm)

Natural sea sponge (including coral pieces) in corn oil

Phantom Development

Evaluating the Effect of Dose on Reconstructed Image Quality in Digital Breast Tomosynthesis, M. P. Kempston et al., IWDM 2006 Poster Session


Phantom development1

Phantom Development


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