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Special Problems of Patient Dosimetry in Mammography
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1992
Year
Breast OncologyMeasurementBody CompositionBreast ImagingBiostatisticsBreast ThicknessNuclear MedicineRadiologyHealth SciencesFirm CompressionMedical ImagingMammary GlandDosimetryGoteborg MammographySpecial ProblemsPatient SafetyBreast CancerMammary Gland BiologyMedicineWomen's Health
This study includes 1350 women examined within the Goteborg mammography screening programme. The mean value of the breast thickness (under firm compression) and the breast parenchyma patterns have been determined. The thickness of polymethylmethacrylate (PMMA) needed to get the same exposure data and optical density for breasts of different thicknesses have been determined. For thick breasts (>40 mm) our results differ from results calculated for a standard breast composed of 50:50 fractions by weight of adipose and glandular tissue. The mean absorbed dose in the glandular tissue is estimated for each of the women studied assuming 50:50 fractions by weight of adipose and glandular tissue and the actual exposure data.