Patent ID: 6171243
Filing Date: 2001-01-09
Classification: A61B,G01T

Abstract:
A nuclear camera system comprising:a gantry defining an examination region for receiving a subject, the subject including one of (i) a positron emittor and (ii) a positron emittor and a single photon emittor;first and second radiation detectors oppositely disposed on the gantry and having the examination region therebetween, the first and second radiation detectors detecting radiation from the examination region;a coincidence circuit connected to the first and second radiation detectors for determining coincidence radiation events emitted from the positron emittor and generating coincidence data based on the coincidence radiation events;a third radiation detector including a collimator for detecting, concurrently with the detection of radiation by the first and second radiation detectors, collimated radiation traveling along a selected projection path, the third radiation detector being supported on the gantry at an angle to the first and second radiation detectors;a projection data processor connected to the third radiation detector for generating collimated projection data based on collimated radiation detected by the third radiation detector;a combiner which selectively combines the coincidence data and the collimated projection data into an image volume; anda reconstruction processor for reconstructing an image representation from the image volume.