Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1997-05-30
1999-07-13
Westin, Edward P.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
600425, G01T 1166
Patent
active
059230380
ABSTRACT:
A nuclear camera system includes oppositely disposed radiation detectors (10a, 10b) which view an examination region 14 wherein a subject 16 is received therein. During a diagnostic scan, a motor and drive assembly (18) concurrently moves the detectors (10a, 10b) in a straight path along a longitudinal axis (20) for a selected time interval. The radiation detectors (10a, 10b) are positioned at a first angle at which the subject is viewed and the angle is maintained through the scan. A data processor (23) collects the data from the detected radiation and a coincidence circuitry (26) determines coincidence radiation events occurring on the detectors 10a, 10b. A first set of image data is generated for the first angular view and stored in a view memory (28). A second scan is performed where the detectors (10a, 10b) are shifted to a second angular view and the detectors are moved along the longitudinal axis for a second selected time interval. Radiation data is collected and a second set of image data is generated for the second scan. The first and second sets of image data are combined and a reconstruction processor (50) reconstructs the combined data into an image representation or a whole-body tomographic image (60).
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K.C. Tam, G. Chu, V. Perez-Mendex and C.B. Lim; "Three-Dimensional Reconstruction In Planar Positron Cameras Using Fourier Deconvolution Of Generalized Tomograms;" IEEE Transactions on Nuclear Science, vol. NS-25, No. 1, Feb. 1989, pp. 152-158.
K.C. Tam, V. Perez-Mendex; "Tomographical imaging with limited-angle input;" J. Opt. Soc. Am; vol. 71, No. 5; May 1981; pp. 582-592.
DiFilippo Frank P.
Gagnon Daniel
Fry John J.
Gurin Timothy B.
Hanig Richard D.
Picker International Inc.
Westin Edward P.
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