Method and system for the correction of artifacts in computed to

Details Method and system for the correction of artifacts in computed to Method and system for the correction of artifacts in computed to

1998-02-18

2000-02-22

Bruce, David Vernon

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 4, 378901, A61B 603

Patent

active

060289090

ABSTRACT:
A method and system for the correction of artifacts in computed tomography ages. Artifacts may occur at a crossover channel in computed tomography images. Sets of interpolation data about the crossover channel and extended interpolation data are generated as extensions of the interpolation data. The extended interpolation data overlaps with a portion of the interpolation data. The overlapping portion includes the crossover channel where the artifact may occur. The overlapping portion is determined by threshold channels which may be automatically selected by the system according to the invention. In this overlapping portion, feathering weights are applied to the interpolated data and the extended interpolated data. New data values are defined to using the feathering weights which eliminate the crossover artifact and produce continuous data. The feathering weights are chosen to meet certain criteria.

REFERENCES:
patent: 5825718 (1998-10-01), Ruth et al.
patent: 5848117 (1998-12-01), Urchuk et al.
Principles of computerized tomographic imaging, Kak, et al., (relevant pages, 49-112), Institute of Electrical and Electronics Engineers, Inc. NY 1988.
Practical cone-beam algorithm, Feldkamp, et al., J. Opt. Soc. Am. A/vol. 1, No. 6, Jun. 1984, pp. 612-619.
Computed tomography scanning with simultaneous patient translation, Crawford, et al., Med. Phys. 17(6), Nov./Dec. 1990, pp. 967-982.
Cone beam tomography with circular, elliptical and spiral orbits, Yan, et al., Phys. Med. Biol., 1992, vol. 37, No. 3, pp. 493-506.
Multi-slice helical CT: Scan and reconstruction, Hui Hu, Med. Phys. 26(1), Jan. 1999, pp. 5-18.
New, efficient Fourier-reconstruction method for approximate image reconstruction in spiral cone-beam CT at small cone angles, Schaller, et al., Abstract, 12 pages. No Date.
Algorithm for image reconstruction in multi-slice helical CT, Taguchi, et al., Medial Physics, vol., 25, No. 4, Apr. 1998, pp. 550-561.

Affiliated with

Also associated with

Rating

Method and system for the correction of artifacts in computed to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for the correction of artifacts in computed to, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for the correction of artifacts in computed to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-526718