Is Stereomammography Possible Without Increasing Dose

Stereoscopic viewing of mammograms is advantageous in reducing ambiguity due to background anatomic noise. This advantage is usually considered to be balanced by doubling the dose required for acquisition of a stereo image pair. In the case of a quantum-noise limited detector, detection theory suggests a possible decrease of the per-image dose by half. We tested this assumption by a series of contrast-detail observer experiments, using phantom images acquired over a range of exposures. Several performance measures were computed and compared for images under different display and viewing conditions. Experimental results support this hypothesis.

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