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Int J Breast Cancer. 2011;2011:701054. doi: 10.4061/2011/701054. Epub 2010 Oct 17.

Image quality of digital direct flat-panel mammography versus an indirect small-field CCD technique using a high-contrast phantom.

Author information

  • 1Department of Radiology, Medical School, University of Cologne, Kerpenerstraße 62, 50924 Cologne, Germany. barbara.krug@uk-koeln.de

Abstract

OBJECTIVE:

To compare the detection of microcalcifications on mammograms of an anthropomorphic breast phantom acquired by a direct digital flat-panel detector mammography system (FPM) versus a stereotactic breast biopsy system utilizing CCD (charge-coupled device) technology with either a 1024 or 512 acquisition matrix (1024 CCD and 512 CCD).

MATERIALS AND METHODS:

Randomly distributed silica beads (diameter 100-1400 μm) and anthropomorphic scatter bodies were applied to 48 transparent films. The test specimens were radiographed on a direct digital FPM and by the indirect 1024 CCD and 512 CCD techniques. Four radiologists rated the monitor-displayed images independently of each other in random order.

RESULTS:

The rate of correct positive readings for the "number of detectable microcalcifications" for silica beads of 100-199 μm in diameter was 54.2%, 50.0% and 45.8% by FPM, 1024 CCD and 512 CCD, respectively. The inter-rater variability was most pronounced for silica beads of 100-199 μm in diameter. The greatest agreement with the gold standard was observed for beads >400 μm in diameter across all methods.

CONCLUSION:

Stereotactic spot images taken by 1024 matrix CCD technique are diagnostically equivalent to direct digital flat-panel mammograms for visualizing simulated microcalcifications >400 μm in diameter.

PMID:
22332015
[PubMed]
PMCID:
PMC3276250
Free PMC Article
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