Image analysis – Applications – Biomedical applications
Reexamination Certificate
2004-07-06
2010-02-09
Ahmed, Samir A. (Department: 2624)
Image analysis
Applications
Biomedical applications
Reexamination Certificate
active
07660450
ABSTRACT:
An imaging system including an artifact reducer arranged to correct for a ring-shaped artifact in a three-dimensional reconstructed volume. The artifact reducer includes a first stage correction arranged to eliminate structured noise of an output screen of an image intensifier of an X-ray imaging apparatus using a first corrective image. A raw image of a patient is first processed with the first corrective image. The gain-corrected images are forwarded to an image deformation correction where a suitable unwarping function performed. The gain-corrected unwarped images are then made available to a second stage gain correction where a second corrective image is applied resulting in a final set of images with a substantially reduced ring-shaped artifact. The final set of images is made available to an image reconstructor arranged for further processing of the final set of images, the result thereof being visualized on a computer monitor for inspection purposes.
REFERENCES:
patent: 5434902 (1995-07-01), Bruijns
patent: 5692507 (1997-12-01), Seppi et al.
patent: 5748768 (1998-05-01), Sivers et al.
patent: 0 479 618 (1992-04-01), None
patent: 0479618 (1992-04-01), None
patent: 0 562 657 (1993-09-01), None
patent: 0562657 (1993-09-01), None
“Image intensifier distortion correction” Dev. P. Chakraborty, med. phys. 14(2), Mar./Apr. 1987, pp. 249-252.
John M. Boone, et al: Analysis and Correction of Imperfections in the Image Intensifier—TV—Digitizer Imaging Chain, vol. 18, No. 2, Mar. 1991, pp. 236-242, XP002327382.
R. Fahrig, et al: Three-Dimesional Computed Tomographic Reconstruction Using a C-arm Mounted XR11, Correction of Image Intensifier Distortion, vol. 24, No. 7, Jul. 1997, p. 1097, XP012010253.
X. Wang, et al: Accurate and Efficient Image Intensifier Distortion Correction Algorithm for Volume Tomographic Angiography, vol. 37, No. 3, Mar. 1998, pp. 977-983, XP000771077.
Timmer Jan
Van De Haar Peter George
Ahmed Samir A.
Fitzpatrick Atiba O
Koninklijke Philips Electronics , N.V.
LandOfFree
Imaging system, an x-ray imaging apparatus, a method and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Imaging system, an x-ray imaging apparatus, a method and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging system, an x-ray imaging apparatus, a method and a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4224068