Abstract
A method of measuring body nitrogen by neutron capture gamma analysis is described. The neutron flux is provided by four collimated 5 Ci Pu-Be sources, placed to give a bilateral irradiation of the subject. The 10.83 MeV thermal neutron capture gamma rays from 14N are detected by two heavily shielded 5 in*4 in NaI(Tl) detectors. Results indicate a reproducibility of +or-3% (1 SD) for a 10 min irradiation of the chest area, while giving a radiation dose equivalent of 50 mrem.
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