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Phantom studies of triple photon absorptiometry and bone mineral measurement at a hip prosthesis
1Department of Nuclear Medicine, Chedoke McMaster Hospitals, Hamilton, On, Canada.
Acta Radiologica (Stockholm, Sweden : 1987)
|March 1, 1992
Abstract:
The feasibility of using triple photon absorptiometry (TPA) for the measurement of bone mineral mass about a hip prosthesis was examined. A theoretical expression describing the variance of TPA measurements was verified using a triple photon source and phantom materials which simulate the soft tissue-bone mineral-metal prosthesis system. The expression for the variance was used to determine an optimized set of photon energies. It was shown that a precision of 3% could be obtained for reasonable measurement times using this optimized set of energies, and that TPA should be a feasible approach for measurement of bone mineral about a hip prosthesis.