Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1995-06-30
1996-10-15
Porta, David P.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
2503631, 36441324, G01T 1166
Patent
active
055656846
ABSTRACT:
A SPECT system includes three gam camera heads (22a), (22b), (22c) which are mounted to a gantry (20) for rotation about a subject (12). The subject is injected with a source of emission radiation, which emission radiation is received by the camera heads. Camera head (22a) has a fan-beam collimator (24a) mounted on a radiation receiving face and generates fan-beam data indicative of the received emission radiation. The camera heads (22b) and (22c) each have a cone-beam collimator (24b), (24c) mounted respectively on their radiation receiving face and generate cone-beam data indicative of the received emission radiation. A transmission radiation source (26) is mounted opposite the camera head (22a) having the fan-beam collimator (24a). The fan-beam detector head (22a) further receives transmission radiation and generates fan-beam transmission radiation indicative thereof. A transmission data reconstruction processor (50) reconstructs the fan-beam transmission data. An emission data memory (110) separately stores the fan-beam and cone-beam emission data. Attenuation correction processors (78, 86) correct the emission data in accordance with the reconstructed attenuation data. An emission data reconstructor (72) reconstructs the corrected emission data into a corresponding three-dimensional image representation which is selectively displayed on a display (76) in a human-readable form.
REFERENCES:
patent: 5210421 (1993-05-01), Gullberg et al.
patent: 5404293 (1995-04-01), Weng et al.
patent: 5461232 (1995-10-01), McCandless et al.
"Three-Dimensional SPECT Reconstruction of Combined Cone Beam and Parallel Beam Data", Jaszczak, et al., pp. 535-548.
"Three-Dimensional SPECT Reconstruction of Combined Cone-Beam and Fan-Beam Data Acquired Using a Three-Dectector SPECT System", Gullberg, et al.
1995 International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, pp. 1-4.
Gullberg Grant T.
Zeng Gengsheng L.
Bruce David Vernum
Porta David P.
The University of Utah
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