A feasibility study of in vivo 14-MeV neutron activation analysis using the associated particle technique.
The feasibility of using the time correlated associated particle technique for in vivo 14-MeV neutron activation analysis has been investigated. Gamma rays following neutron inelastic scattering with nitrogen, carbon, and oxygen have been measured with a 12.5 x 10-cm NaI (T1) detector. The results have been scaled to a proposed facility comprising four such detectors past which the subject would be scanned. Based on counting statistics, the precision of estimation of these elements has been determined to be 2.1%, 1.0%, and 1.1%, respectively, for experimental measurements on a sample containing physiological concentrations of the major body elements. The average body dose level would be restricted to 0.3 mSv.
Garrett
R
R
Physics Department, University of Auckland, New Zealand.
Mitra
S
S
D000512:Alpha Particles; D001823:Body Composition; D005240:Feasibility Studies; D005720:Gamma Rays; D006801:Humans; D009501:Neutron Activation Analysis / Q000295:instrumentation / Q000379:methods*; D009502:Neutrons