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Research Knee Phantom

A voxel phantom representing a human knee was built from a computerized axial tomograph (CAT) scan of an anthropometric knee phantom. The original image stack has been processed to distinguish both air and bone from muscle tissue. Monte Carlo simulations have been used to develop an equation that will predict the counting efficiency as a function of photon energy in the range of 17 keV to 1000 keV for a knee count. The Monte Carlo predicitions were benchmarked with data from a international intercomparison showing that the predicitions were adequate.