Premium
Coherent scattering and bone mineral measurement: The dependence of sensitivity on angle and energy
Author(s) -
Ndlovu A. M.,
Farrell T. J.,
Webber C. E.
Publication year - 1991
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596614
Subject(s) - compton scattering , photon , scattering , attenuation , optics , coherent backscattering , physics , sensitivity (control systems) , photon energy , energy (signal processing) , materials science , quantum mechanics , electronic engineering , engineering
The sensitivity of a technique for the measurement of trabecular bone mineral concentration has been examined theoretically and experimentally. The technique is based on coherent gamma ray scattering and corrections for attenuation are obtained from transmitted photons rather than Compton scattered photons. For an incident photon energy of 60 keV, the minimum detectable bone mineral difference is practically independent of scattering angle while for an incident energy of 100 or 122 keV the scattering angle must be less than 70° to optimize the minimum detectable difference.