METHOD FOR MEASURING OF ABSOLUTE VALUE OF BODY DENSITY Russian patent published in 1997 - IPC

FIELD: instruments, in particular, Compton computer tomography. SUBSTANCE: method involves treating body in different directions with gamma and X-ray collimated beams which powers are E₁ and E₂, detection of reflected radiation with collimated detectors D₁ and D₂ and calculation of absolute value of density by means of given algorithm. Initially axes of collimators and detector are oriented so that they intersect in point which is located on surface of body. Then, method involves discrete movement of rigid system of source and detector in direction of given coordinate X which runs through body and measurement of radiation flow N_1i that enters detector D₁ for each step of movement, which is run until intersection point of axes of source collimators and detector reaches inner surface of body. Then method involves setting source power to energy of quanta which are dissipated by angle θ in direction of detector E₂= E_s(θ), locating radiation source with energy E₂ in position of detector D₁, locating detector D₂ in position of radiation source with energy E₁ and discrete movement of system of source and detector along X coordinate towards body surface. Simultaneously method involves measurement of radiation flow N_2i which is detected for each step of movement until intersection point of axes of source collimators and detector reaches body surface. Then given algorithm is used for calculation of density ρ_i in series for each movement step. EFFECT: increased functional capabilities. 2 dwg