Method and apparatus for reduction of artifacts in computed...

Details Method and apparatus for reduction of artifacts in computed... Method and apparatus for reduction of artifacts in computed...

2006-04-04

2006-04-04

Bruce, David V. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S004000

Reexamination Certificate

active

07023951

ABSTRACT:
A method and computer-readable medium for reducing artifacts in image data generated by a computed tomography system is provided. The artifacts are due to the presence of a high density object in a subject of interest. The method comprises receiving measured sinogram data from the computed tomography system. The sinogram data is representative of sinogram elements. The measured sinogram data is reconstructed to generate initial reconstructed image data. Then corrected sinogram data is generated using the measured sinogram data. The corrected sinogram data is iteratively reconstructed to generate an improved reconstructed image data based on a weight measure derived from the measured sinogram data.

REFERENCES:
patent: 6125193 (2000-09-01), Han
patent: 6426988 (2002-07-01), Yamada et al.
patent: 6754298 (2004-06-01), Fessler
patent: 2001/0028696 (2001-10-01), Yamada et al.
J.F. Williamson, et al, “Prospects for Quantitative Computed Tomography Imaging in the presence of Foreign Metal Bodies using Statistical Image Reconstruction”, Med. Phys., vol. 29, No. 10, pp. 2404-2418, Oct. 2002.
G. Wang, et al, “A fast algorithm for metal artifact reduction in X-ray CT”, Academic Radiology, pp. 7:607-614, 2000.
B. De. Man, “Iterative Reconstruction for Reduction of Metal Artifacts in Computed Tomography”, PhD Thesis, University of Leuven, 2001.
W.A. Kalender, et al, “Reduction of CT Artifacts caused by Metallic Implants”, Radiology, pp. 576-577, Aug. 1987.
R.M. Lewitt, et al, Image Reconstruction from Projections : III : Projection Completion Methods (theory), Optik 50 (1978) No. 3, pp. 189-204.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3529451