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NCRP Report No. 83, The Experimental Basis for Absorbed-Dose Calculations in Medical Uses of Radionuclides
NCRP Report No. 83 reviews the methods used to estimate the absorbed dose to humans from internally deposited radionuclides. Particular emphasis is placed on comparing the results of direct measurements with calculations based on mathematical models employed to estimate the parameters that enter into dose calculations. The Report briefly reviews the history of internal radiation dosimetry and follows this with a discussion of the physical parameters of transport calculations used in dosimetry. Included is a discussion of the techniques used to measure the activity distribution in humans and the factors which should be considered in making in vivo absorbed dose measurements. Comparisons of measured and calculated absorbed dose values in phantoms, animals and humans are presented. The Report includes, in an appendix, a formalism that can be used to quantify the radioactivity of irregular geometric shapes using an external measurement technique.
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