Process for carrying out emission cartography of a body correcte

Details Process for carrying out emission cartography of a body correcte Process for carrying out emission cartography of a body correcte

1996-05-03

1998-09-29

Galick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250395, G01T 1161

Patent

active

058148175

ABSTRACT:
A process provides a cartography of an emission of radiation by a body (2) that is corrected with respect to the attenuation of radiation by the body. A radiation transmissions source (3) is able to assume several positions with respect to the body and emits photons toward the body. The process includes: for each position of the radiation source, determining a transmission measurement (N) of the photons emitted by the radiation source and transmitted by the body and determining an emission measurement projection of the photons emitted by the body, the transmission measurement and the emission measurement projection being performed with the same geometry of the body. Determining, for each position of the radiation source, an attenuation correction coefficient C of radiation due to the body in order to correct the emission measurement projection (E6); and then constructing an emissions map (E2) on the basis of the attenuation-corrected, emission measurement projections.

REFERENCES:
patent: 4777367 (1988-10-01), Kawasaki et al.
patent: 5155365 (1992-10-01), Cann et al.
patent: 5338936 (1994-08-01), Gullberg et al.
patent: 5461232 (1995-10-01), McCandless et al.
Bailey, D.L., et al, Journal of Nuclear Medicine 28(S), 844-851 (1987) "Improved Spect Using Simultaneous Emission and Transmission Tomography".

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