Recent upgrade of the in vivo neutron activation facility at Brookhaven National Laboratory
- Brookhaven National Lab., Upton, NY (United States)
- Ioannina Univ. (Greece). Dept. of Medical Physics
- Columbia Univ., New York, NY (United States). Dept. of Applied Physics and Nuclear Engineering
- Saint Luke`s-Roosevelt Body Composition Unit, New York, NY (United States)
The in vivo neutron activation facility at Brookhaven National Laboratory consists of a delayed- and a prompt-gamma neutron activation (DGNA and PGNA) system and an inelastic neutron scattering (INS) system. The total body contents of several basic elements, including potassium, calcium, chlorine, sodium, and phosphorus are measured at the DGNA system; total body carbon is measured at the INS system; and the nitrogen-tohydrogen ratio is measured at the PGNA system. Based on the elemental composition, body compartments, such as total body fat and total body protein can be computed with additional independently measured parameters, such as total body water, body size, and body weight. Information on elemental and compartmental body composition obtained through neutron activation analysis is useful, if not essential, for research on growth, malnutrition, aging diseases, such as osteoporosis and acquired immunodeficiency syndrome in which the progression of the illness is closely related to changes in major body compartments, such as bone, adipose tissue, and muscle. The DGNA system has been modified and upgraded several times since it was first built. Recently, all three systems underwent major upgrades. This upgrading and some preliminary studies carried out with the modified facilities are reported here.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Department of Health and Human Services, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 10188924
- Report Number(s):
- BNL-49461; CONF-921167-1; ON: DE94001384; CNN: Grant 1-PO1-DK42618
- Resource Relation:
- Conference: International symposium on in vivo body composition studies,Houston, TX (United States),10-12 Nov 1992; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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