title: A method detection limit for potential in vivo arsenic measurements with a 50 W x-ray tube.
abstract: Using a 50 W x-ray tube as the fluorescing source, an x-ray fluorescence system was designed to measure arsenic in superficial layers of tissue-simulating phantoms. The detection limit for arsenic in the phantoms at a setting of 35 kV and with 200 microm of a Mo filter was 0.40 +/- 0.06 microg As g(-1). This measurement results in an effective dose of 0.6 microSv.
authors.affiliation: Department of Medical Physics, The Ottawa Hospital Regional Cancer Centre, Ottawa, Ontario K1H 8L6, Canada. rstudinski@ottawahospital.on.ca
authors.forename: Ryan C N
authors.initials: RC
authors.lastname: Studinski
authors.forename: Fiona E
authors.initials: FE
authors.lastname: McNeill
authors.forename: Joanne M
authors.initials: JM
authors.lastname: O'Meara
authors.forename: David R
authors.initials: DR
authors.lastname: Chettle
mesh_terms: D001151:Arsenic / Q000032:analysis* / Q000737:chemistry; D002138:Calibration; D004581:Electronics; D004867:Equipment Design; D006801:Humans; D015233:Models, Statistical; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D012542:Scattering, Radiation; D013052:Spectrometry, X-Ray Emission / Q000295:instrumentation / Q000379:methods*; D014965:X-Rays
chemical_list: D001151:Arsenic