Calibration and characterization of a digital X-ray fluorescence bone lead system.
Five different combinations of digital shaping parameters were tested for a newly assembled. 109Cd source, K X-ray fluorescence bone lead system. System calibration results are presented, along with analyses of measurement uncertainty and reproducibility obtained from repeat measurements of a bone phantom and a human tibia. Digital shaping parameters of 2.4 micros for a rise time/fall time and 1.2 micros for a flat top width were identified as superior. The digital system provided significant improvements in overall measurement precision, with gains of at least 25-35% over conventional system results.
Fleming
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Department of Biomedical Technologies, University of Vermont, Burlington 05405-0068, USA. dfleming@cosmos.uvm.edu
Forbes
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D001842:Bone and Bones / Q000737:chemistry*; D002106:Cadmium Radioisotopes; D006801:Humans; D007854:Lead / Q000032:analysis*; D019047:Phantoms, Imaging; D013052:Spectrometry, X-Ray Emission / Q000706:statistics & numerical data
D002106:Cadmium Radioisotopes; D007854:Lead