title: An alignment test jig for measuring the effective focal-spot size of mammographic X-ray tubes.
authors.affiliation: Department of Medical Physics, St Luke's Hospital, Guildford.
authors.forename: M L
authors.initials: ML
authors.lastname: Ramsdale
authors.forename: P A
authors.initials: PA
authors.lastname: Hiles
authors.forename: C P
authors.initials: CP
authors.lastname: Lawinski
mesh_terms: D004867:Equipment Design; D006801:Humans; D008327:Mammography / Q000295:instrumentation*