Method and system of CT data correction

X-ray or gamma ray systems or devices – Specific application – Computerized tomography

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C378S007000, C378S207000, C378S901000

Reexamination Certificate

active

11627121

ABSTRACT:
An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

REFERENCES:
patent: 5165100 (1992-11-01), Hsieh et al.
patent: 5225980 (1993-07-01), Hsieh et al.
patent: 5400378 (1995-03-01), Toth
patent: 5828719 (1998-10-01), He et al.
patent: 6490476 (2002-12-01), Townsend et al.
patent: 6990171 (2006-01-01), Toth et al.
patent: 7142636 (2006-11-01), Hsieh et al.
patent: 2002/0097320 (2002-07-01), Zalis
patent: 2003/0023163 (2003-01-01), Johnson et al.
patent: 2003/0091142 (2003-05-01), Li
patent: 2003/0113267 (2003-06-01), Knopp et al.
patent: 2004/0136491 (2004-07-01), Iatrou et al.
patent: 2004/0264627 (2004-12-01), Besson
F. Rashid-Farrokhi et al., “Local Tomography in Fan-Beam Geometry Using Wavelets,” IEEE 1996, pp. 709-712.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and system of CT data correction 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 of CT data correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system of CT data correction will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3839959

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.