Abstract
excerpt As radioisotopes are coming to hold an increasingly important position in clinical medicine, new ways of utilizing them and new labeled compounds are being sought by many groups of workers. If one reviews the physical characteristics of the various nuclides, radiomercury, Hg203, is found to possess some very desirable features. In particular, it has a single, rather weak gamma emission (280 kev) and enables good resolution when multihole focusing collimator and gamma spectrometry are used. Blau and Bender have used radiomercury-labeled Neohydrin in brain tumor localization with considerable success (1), and McAfee and Wagner (2) have reported promising studies with the same tracer for kidney scanning. Following the report of these latter writers, we started kidney scanning, finding excellent differential concentration of the isotope in the kidneys. Initially, data concerning the effective half-life of the tracer had been accepted as reported by McAfee. This matter was re-considered, however, after...
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