Cone beam CT scanners with reduced scan length

Details Cone beam CT scanners with reduced scan length Cone beam CT scanners with reduced scan length

2006-03-28

2006-03-28

Ho, Allen C. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S015000, C378S020000, C378S196000

Reexamination Certificate

active

07020236

ABSTRACT:
Computerized tomography apparatus for reconstructing attenuation values within a volume comprising: an x-ray source situated operative to rotate about said volume, in a rotation plane, while irradiating at least a portion of the volume; a plurality of rows of x-ray detectors illuminated by said rotating x-ray source situated on an opposite side of the volume; a patient support operative to move a patient through a space between the source and detectors at an angle to the normal to the rotation plane, while the x-ray source illuminates the detectors; and a controller operative to compute the angle based on at least one of a radius R of said rotation, a radius r of said volume and a helix pitch, m, defined as a distance the patient support moves during a single rotation of the x-ray source.

REFERENCES:
patent: 4989142 (1991-01-01), Crawford
patent: 5802134 (1998-09-01), Larson et al.
patent: 5881122 (1999-03-01), Crawford et al.
patent: 5999587 (1999-12-01), Ning et al.
patent: 6229869 (2001-05-01), Hu
patent: 6324246 (2001-11-01), Ruimi
patent: 6400791 (2002-06-01), Schwarz
patent: 6415012 (2002-07-01), Taguchi et al.
patent: 6580777 (2003-06-01), Ueki et al.
patent: 6658081 (2003-12-01), Bruder et al.
patent: 6751283 (2004-06-01), van de Haar
patent: 2002/0141628 (2002-10-01), Bruder et al.
patent: 199 28 738 (2001-01-01), None
patent: 0 981 996 (2000-03-01), None
patent: WO 99/01736 (1999-01-01), None
Grass, M. et al.; “3D Cone-Beam CT Reconstruction for Circular Trajectories;”(2000;) Phys. Med. Biol.; vol. 45; pp. 329-347.
Kachelriess,M. et al.; “Advanced Single-Slice Rebinning in Cone-Beam Spiral CT;” Apr. 2000; Med. Phys.; vol. 27, No. 4; pp. 754-772.
Kudo, H. et al.; “Quasi-Exact Filtered Backprojection Algorithm for Long-Object Problem in Helical Cone-Beam Tomography;” Sep. 2000; IEEE Transactionson Medical Imaging; vol. 19, No. 9; pp. 902-921.
Schaller,S. et al.; “Exact Radon Rebinning Algorithm for the Long Object Problem in Helical Cone-Beam CT;” May 2000; IEEE Transactionson Medical Imaging; vol. 19, No. 5; pp. 361-375.
Wang, G. et al.; “A General Cone-Beam Reconstruction Algorithm;” Sep. 1993; IEEE Transactionson Medical Imaging; vol. 12, No. 3; pp. 486-496.

Affiliated with

Also associated with

Rating

Cone beam CT scanners with reduced scan length does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cone beam CT scanners with reduced scan length, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cone beam CT scanners with reduced scan length will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3528557