title: Reassessment of structural shielding design in mammography installations.
abstract: In this article, it is argued that current shielding methodologies can lead to an over-shielding of low-energy X-ray imaging facilities. Measurements of scattered air kerma rates in a mammography installation, including the effect of an anthropomorphic phantom of the patient, are presented. Detailed Monte Carlo calculations that support the measured results are also shown. Calculations for a mobile mammography installation, including the 'patient transmission factor', are presented and results are discussed.
authors.affiliation: Centro de Fsica Atómica da Universidade de Lisboa, Lisbon, Portugal. jmsampaio@fc.ul.pt
authors.forename: J M
authors.initials: JM
authors.lastname: Sampaio
authors.forename: M C
authors.initials: MC
authors.lastname: Abreu
authors.forename: P
authors.initials: P
authors.lastname: Sousa
authors.forename: L
authors.initials: L
authors.lastname: Peralta
authors.forename: P E
authors.initials: PE
authors.lastname: Lima
mesh_terms: D005260:Female; D006801:Humans; D008327:Mammography / Q000295:instrumentation*; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation*; D014965:X-Rays