On the Partial-body Irradiation of the Dog

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Abstract
The distribution of both effective beam energy and dose has been studied throughout the partially irradiated dog. Results are given for both upper (UB) and lower body (LB) exposures to 1000 kVp X-radiation and are compared to a similar whole body (WB) irradiation. The effective energy at selected locations has been found to decrease from approximately 285 keV in non-shielded areas to a value of about 150-160 keV at points behind the shield. Although the dose falls rapidly with depth behind the shield, a small but significant component has been found. Blair''s model for the addition of differing modes of radiation injury (i.e. 1/DWB = 1/DUB + 1/Dlb) has been found to hold true if the average dose extended over the portion of the animal in question is used.

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