144Ce data

Fig. 5. Retention of 144Ce in lung, liver, skeleton, and soft tissue remainders of Beagle dogs after inhalation of l44Ce chloride in Cs chloride aerosol particles. Average values and total ranges of data are shown in the upper figure along with solid line curves which were projected from the biological model, all of which include physical decay. The lower figure shows the same model projections only corrected for physical decay.

Ce. The lower concentrations in the adrenal gland, testicle, ovary, and pancreas compared to data presented in Tables 18 and 19 are typical of intravenous rather than intraperitoneal injection. 

Boecker, 1973) exposed to other radioactive aerosols was also reviewed. An analysis of the data from both studies suggested that for beagles exposed by inhalation to radioactive 144Ce aerosols, individuals in the population would receive radiation doses to a given organ within a fog-normal distribution characterized by a geometric standard deviation of 2. 

The available data for deriving dose-response relationships for 144Ce are relatively limited. A complicating feature is that the spectrum of diseases produced is dependent upon the form of the 144Ce entering the body and the resultant radiation dose. This is apparent from data in Table 23 in which several different and competing diseases were produced by inhaled 144CeCl3. Additional factors that confuse the interpretation of internal emitter dose-response studies in laboratory... 

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