The rate of clearance of 51Cr labelled heat-damaged red cells from the circulation has been compared with the dimensions of the posterior scan of the spleen in 79 cases including nine controls. A strong negative correlation was found between the clearance half-time and the parameters of the scan but, as there was a large variation about the regression line, in the assessment of hyposplenism determination of the rate of clearance of heat-damaged red cells cannot be replaced by the easier determination of spleen size by scanning.
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Smart et al. (1978) studied this question.