3D image reconstruction for helical partial cone beam data

Details 3D image reconstruction for helical partial cone beam data 3D image reconstruction for helical partial cone beam data

1998-09-30

2000-08-01

Bruce, David V.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 15, 378901, A61B 603

Patent

active

060977841

ABSTRACT:
A method of image reconstruction from partial cone beam data includes collecting the partial cone beam data in two-dimensional arrays. The collected data corresponds to rays of radiation diverging in two dimensions from a common vertex as the vertex travels along a curve. Each element of the data represents a line integral of an object being reconstructed taken along each ray. The data is then pre-weighted and a local coordinate system is defined. A one-dimensional convolution of the pre-weighted data is computed in the local coordinate system along a direction which is tangential to the curve along which the vertex travels. Finally, the convolved data is weighted and three-dimensionally backprojected. In a preferred embodiment, the curve defines a helical path, and the kernel for the one-dimensional convolution of the pre-weighted data is a ramp convolver.

REFERENCES:
patent: 4789929 (1988-12-01), Nishimura et al.
patent: 5073911 (1991-12-01), Ozaki et al.
patent: 5090037 (1992-02-01), Toth et al.
patent: 5377250 (1994-12-01), Hu
patent: 5404293 (1995-04-01), Weng et al.
patent: 5485493 (1996-01-01), Heuscher et al.
patent: 5625660 (1997-04-01), Tuy
"Technique and Arrangement for Tomographic Imaging," PCT Application of Danielsson, et al. (Jan. 13, 1998).
Defrise, et al., "A Cone-Beam Reconstruction Algorithm Using Shift-Variant Filtering and Cone-Beam Backprojection," IEEE Transactions on Medical Imaging, (Mar. 1994) vol. 13, No. 1, pp. 186-195.

Affiliated with

Also associated with

Rating

3D image reconstruction for helical partial cone beam data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with 3D image reconstruction for helical partial cone beam data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3D image reconstruction for helical partial cone beam data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-671285