Image reconstruction method for a computed tomography apparatus

Details Image reconstruction method for a computed tomography apparatus Image reconstruction method for a computed tomography apparatus

1998-05-28

1999-11-30

Bruce, David Vernon

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, A61B 603

Patent

active

059955805

ABSTRACT:
An exact image reconstruction method for computed tomography allows the reconstruction of a sub-volume of interest in a long subject from cone beam or pyramid beam CT data using a spiral focus path. A two-stage reconstruction process is utilized that, by line integration over the detector, first calculates 3D radon values of a sub-volume of interest defined only for the respective .phi.-plane for each .phi.-plane of a 3D spherical coordinate system. For each .phi.-plane, the sub-volume of interest is limited toward the exterior by the radius of the measurement field and is upwardly and downwardly limited by curved surfaces that arise by the locus of a straight line perpendicular to the .phi.-plane under consideration proceeding to each focus point of a spiral segment.

REFERENCES:
patent: 5463666 (1995-10-01), Eberhard et al.
patent: 5500883 (1996-03-01), Hsiao et al.
patent: 5901195 (1999-05-01), Sauer et al.
patent: 5901196 (1999-05-01), Sauer et al.
"On Two Approaches to 3D Reconstruction in NMR Zeugmatography," Marr et al., Proc. Mathematical Aspects of Computerized Tomography, Herman et al., Eds. (1980).
"Mathematical Framework of Cone Beam 3d Reconstruction via the First Derivative of the Radon Transform," Grangeat, Mathematical Methods in Tomography, Herman et al, Eds. (1991).

Affiliated with

Also associated with

Rating

Image reconstruction method for a computed tomography apparatus 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 method for a computed tomography apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reconstruction method for a computed tomography apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1683073