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Swinth K. L.; Park, J. F.; Moldofsky, P. J.
Health Physics: June 1972
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A series of intraesophageal probes containing avalanche diode detectors were developed for detecting plutonium translocated to the tracheobronchial lymph nodes. Experiments with dogs having body burdens of plutonium yielded an average sensitivity of 67 cpm/μCi for the middle tracheobronchial node and 124 cpm/μCi for the right tracheobronchial node. Experiments with a human thoracic phantom resulted in sensitivities of 30–60 cpm/μCi for the middle tracheobronchial node. Two standard deviations of the background for a 20 min count correspond to 8 nCi under optimum counting conditions with the phantom.

©1972Health Physics Society