Image analysis – Applications – Biomedical applications
Reexamination Certificate
2007-03-06
2007-03-06
Bella, Matthew C. (Department: 2624)
Image analysis
Applications
Biomedical applications
C382S132000
Reexamination Certificate
active
10652717
ABSTRACT:
A method and system is presented in image-guided radiosurgery for determining the measure of similarity of two digital images, for example a 2D x-ray image and a 2D DRR synthesized from 3D scan data. A two-dimensional array of pixel values of a difference image is formed by subtracting each pixel value of the second image from the corresponding pixel value of the first image. The pattern intensity function is constructed by taking the summation of asymptotic functions of the gradients of the difference image. The neighborhood R is defined so as to allow the gradients of the difference image to be considered in at least four directions.
REFERENCES:
patent: 5117829 (1992-06-01), Miller et al.
patent: 5901199 (1999-05-01), Murphy et al.
patent: 6470207 (2002-10-01), Simon et al.
patent: 2004/0092815 (2004-05-01), Schweikard et al.
patent: 2004/0267113 (2004-12-01), Thomson
Graeme P. Penny et al., A Comparison of Similarity Measures for Use in 2-D-3-D Medical Image Registration, IEEE Transactions on Medical Imaging, vol. 17, No. 4, Aug. 1998.
Graeme P. Penney, et al., “Validation of a two- to three-dimensional registration algorithm for aligning preoperative CT images and intraoperative fluoroscopy images,”Med. Phys.28(6), 1024-1032, Jun. 2001.
D. Sarrut, et al., “Patient positioning in radiotherapy by registration of 2D portal to 3D CT images by a contend-based research with similarity measures,”CARS 2000, 707-712.
Martin J. Murphy, “An automatic six-degree-of-freedom image registration algorithm for image-guided frameless stereotaxic radiosurgery,”Med. Phys.24(6), 857-866, Jun. 1997.
Fu Dongshan
Kuduvalli Gopinath
Accuray, Inc.
Blakely , Sokoloff, Taylor & Zafman LLP
Tabatabai Abolfazi
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