Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1995-05-11
1997-01-21
Glick, Edward J.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
G01T 1161
Patent
active
055961975
ABSTRACT:
A mechanism and method for performing transmission and emission scanning sessions with two line sources and two detectors wherein two sliding transmission detection windows are employed to differentiate between transmission and emission photons. Transmission and emission data can be collected simultaneously. This system provides that the dual transmission detection windows are each associated with a particular line source and move in synchronization with the associated line source. Further, the two line sources and the two detector windows all move in synchronization in the direction of the long axis of the object being scanned and at any given position all are within a given spatial plane that is transverse to the long axis of the object. In this configuration, the system can effectively reduce the amount of cross-talk detected by a detector (e.g., cross-talk being scattered photon radiation detected by a given detector but not originating from the detector's associated line source). The configuration of this system also effectively operates in conjunction with systems employing tracking zoom regions across detector surfaces (e.g., used for cardiac studies).
REFERENCES:
patent: 5304806 (1994-04-01), Hines et al.
Patrick Tan, et al., A scanning Line Source for Simultaneous Emission . . . , The Journal of Nuclear Medicine, Oct., 1993, pp. 1752-1758.
R. J. Jaszczak, et al., Fast Transmission CT for Determining Attenuation Maps . . . , The Journal of Nuclear Medicine, Sep., 1993, pp. 1577-1586.
Eric C. Frey, et al., Simultaneous Acquisition of Emission and Transmission Data . . . , The Journal of Nuclear Medicine, Dec., 1992, pp. 2238-2245.
C. H. Tung, et al. Non-Uniform Attenuation Correction Using Simultaneous Transmission and Emission . . . , 0-70813-0513-Feb. 1992, pp. 2018-2022.
S. H. Manglos, Truncation artifact suppression in cone-beam radionuclide . . . , Phys. Med. Biol., 1992, pp. 549-562.
Jones Steven M.
Lang Thomas F.
Liebig John R.
Wang Xiaohan
ADAC Laboratories
Glick Edward J.
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