Multi-geometry241AmBe neutron irradiator: Design and calibration for total-body neutron activation analysis |
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Authors: | K. J. Ellis R. J. Shypailo |
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Affiliation: | (1) Department of Pediatrics, Baylor College of Medicine, USDA/ARS Children's Nutrition Research Center, 77030-2600 Houston, TX, USA |
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Abstract: | Neutron activation analysis provides an accurate elemental assessment of body compositional compartments; the analytical technique identifies skeletal, muscle, protein, and fat masses. Our irradiator system uses 56241AmBe sources (4.4·107 n/s each) which can be arranged in four basic geometries to examine body sizes from a preterm infant (500 g, 30 cm) to a very large adult (120 kg, 2m). Both in vivo and human cadaver studies have been performed. Precisions of 1 to 2% for total body Ca, P, Na, and Cl have been obtained. |
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