[en] Measurements were made of x-ray spectra incident on and transmitted through whole excised fresh breast tissue. The spectra and corresponding radiographs show that hardening of the x-ray beam from a molybdenum anode x-ray tube by a 0.5 mm Al filter instead of the conventional 0.03 mm Mo filter allows shorter exposure times and reduces patient radiation exposure. With the Al filter, acceptable image contrast is preserved in mammography of thick or dense breasts
1976; 13 p; 62. annual meeting of radiologic advances in breast cancer; Chicago, Illinois, United States of America (USA); 15 Nov 1976; Available from NTIS. $3.50.