Image reconstruction from V-projections acquired by Compton came

Details Image reconstruction from V-projections acquired by Compton came Image reconstruction from V-projections acquired by Compton came

1997-06-03

1998-11-24

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036303, G01T 1164

Patent

active

058411410

ABSTRACT:
A SPECT system includes a Compton camera (14) disposed on a gantry (16). The camera (14) includes linear detectors (30a, 30b) operating without mechanical collimation for detecting radiation emanating from a subject to be imaged. A data processor (22) collects and processes radiation data in accordance with the detected radiation. Position and energy resolving circuitry (24) determines positions and energy deposited by photons striking the detectors. A projection generator (34) generates divergent projections or V-projections based on the collected data which determine a possible location of a gamma source of the detected radiation. A conversion processor (36) converts the V-projections into parallel projection data such as a Radon transformation. A reconstruction processor (38) reconstructs an image representation of a region of interest from the subject from the parallel projection data using filtered back projection. Alternately, two Compton cameras (70, 72) disposed at a selected angle to each other collect the radiation data and V-projections are generated from both cameras. A combination of V-projections are selected from both cameras and are converted into parallel projections before reconstruction of an image representation.

REFERENCES:
patent: 4055765 (1977-10-01), Gerber et al.
patent: 4185274 (1980-01-01), Giallorenzi
patent: 4437007 (1984-03-01), Koslow et al.
patent: 4529882 (1985-07-01), Lee
patent: 4642464 (1987-02-01), Mullani
patent: 4833327 (1989-05-01), Hart
patent: 4850002 (1989-07-01), Harding et al.
patent: 4857723 (1989-08-01), Modisette
patent: 4857737 (1989-08-01), Kamae et al.
patent: 5005195 (1991-04-01), Lanza et al.
patent: 5175434 (1992-12-01), Engdahl
patent: 5281821 (1994-01-01), Antich et al.
patent: 5334839 (1994-08-01), Anderson et al.
patent: 5457321 (1995-10-01), Ichihara et al.
patent: 5567944 (1996-10-01), Rohe et al.
patent: 5665971 (1997-09-01), Chen et al.
patent: 5742056 (1998-04-01), Valentino et al.
Monte Carlo Study of a High Resolution Gamma Ray Telescope Used as a Polarimeter, J. Park, et al., Workshop on High Resolution Gamma Ray Cosmology, UCLA, Nov. 2-3, 1988, .COPYRGT. Elsevier Science Publishers B.V.
Towards Direct Reconstruction from a Gamma Camera Based on Compton Scattering, Michael J. Cree and Philip J. Bones, IEEE; Transactions on Medical Imaging; vol. 13, No. 2, Jun. 1994 IEEE.

Affiliated with

Also associated with

Rating

Image reconstruction from V-projections acquired by Compton came does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reconstruction from V-projections acquired by Compton came, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reconstruction from V-projections acquired by Compton came will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1705798