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Mean glandular dose and the standard breast.

Mean glandular dose limits in mammography are defined in terms of a "standard breast". However, accrediting bodies do not always use the same standard breast. In this study, dose was measured following the guidelines of the National Program for the Early Detection of Breast Cancer (NPEDBC) and the Royal Australasian College of Radiologists (RACR). The RACR dose was found to be 32% less than the NPEDBC dose. This highlights the need for breast characteristics to be included in any statement of mean glandular dose.