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Comparison of Full-Field Digital Mammography and Screen-Film Mammography for Detection and Characterization of Simulated Small Masses

Wei T. Yang1, Chao-Jen Lai1, Gary J. Whitman1, William A. Murphy, Jr.1, Mark J. Dryden1, Anne C. Kushwaha1, Aysegul A. Sahin1, Dennis Johnston1, Peter J. Dempsey1 and Chris C. Shaw1

1 All authors: Division of Diagnostic Imaging, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd., Unit 57, Houston, TX 77030.


Figure 1
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  		Fig. 1 —Template of setup for radiography of phantom breast masses. Lucite (polymerized methyl methacrylate) is manufactured by Lucite International.

 

Figure 2
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  		Fig. 2 —Photograph of setup for radiography of phantom breast masses. Breast phantom (RMI #165) is manufactured by Gammex.

 

Figure 3
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  		Fig. 3A —Images of phantom breast masses. Each mammogram has six randomly assigned detection tasks (circles) consisting of true-positives (masses of varying sizes, shapes, and densities) and true-negatives distributed in areas of varying background complexity in the anthropomorphic phantom. Full-field digital mammography.

 

Figure 4
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  		Fig. 3B —Images of phantom breast masses. Each mammogram has six randomly assigned detection tasks (circles) consisting of true-positives (masses of varying sizes, shapes, and densities) and true-negatives distributed in areas of varying background complexity in the anthropomorphic phantom. Screen-film mammography.

 

Figure 5
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  		Fig. 4 —Receiver operating characteristic curves for full-field digital mammography (solid line) and screen-film mammography (dotted line). For full-field digital mammography, area under the receiver operating characteristic curve (AUC) = 0.905 ± 0.015. For screen-film mammography, AUC= 0.879 ± 0.016.

 

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