title: Determination of X-ray spectra incident on and transmitted through breast tissue.
abstract: X-ray spectra incident on and transmitted through breast tissue were measured using a fresh whole excised breast. These spectra and corresponding radiographs show that hardening of the beam from a molybdenum-anoda x-ray tube by a 0.5-mm AI filter instead of the conventional 0.03-mm Mo filter allows shorter exposure times and reduces patient exposure. Acceptable image contrast is preserved in mammography of thick or dense breasts.
mesh_terms: D005260:Female; D006801:Humans; D008327:Mammography; D011829:Radiation Dosage; D013679:Technology, Radiologic; D014965:X-Rays