A Study of Mammographic Exposure and Detail Visibility Using Three Systems: Xerox 125, Min-R, and Xonics XERG

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Abstract
A breast phantom of novel design was used to measure visibility of simulated calcific and soft-tissue fibrillar details in mammography, as well as to determine the roentgen exposure vs. depth. Exposure data were combined with a model of the breast as compressed during mammography to compute the mean exposure to the ductal parenchyma (MDE). Different imaging systems [3] were compared over a wide range of X-ray beam energies and breast characteristics. Dosage criteria other than the MDE are discussed. The method is apparently helpful in assessing risk of X-ray induced breast cancer.