Image analysis – Applications – Biomedical applications
Reexamination Certificate
2004-05-10
2008-07-08
Dang, Duy M (Department: 2624)
Image analysis
Applications
Biomedical applications
C382S190000
Reexamination Certificate
active
07397935
ABSTRACT:
Method for performing segmentation of an interior vessel within the body of a patient, the method including obtaining a sequence of intravascular ultrasound images of an interior vessel and dividing the sequence into batches, detecting uninformative regions in each of the batches, the uninformative regions arising from an acoustic shadow cast by guide wire and by calcified plaque within the interior vessel, extracting a preliminary outer boundary of the interior vessel, tracking images in each of the batches to counter various distortions, performing statistical analysis and spatial integration on each of the batches to obtain a classification of blood and tissue regions, extracting a secondary outer boundary of the interior vessel utilizing the classification of blood and tissue regions and refining result, and extracting the inner boundary of the interior vessel based on the classification of blood and tissue regions.
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Claus Dethlefsen et al., “A State-Space Model for a Sequence of Image Characteristics” Department of Mathematics, Institute of Electronics System, Aalborg University, Denmark.
L. Silveira Jr., et al., “Near Infrared Raman Spectroscopy for In Vitro Human Coronary Artery Tissue Identification”, Universidade do Vale do Paraiba, Sao Paulo, Brazil.
Baris Sumengen et al., “Image Segmentation Using Curve Evolution”, Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106-9560.
International Search Report and Written Opinion for PCT/IL2005/000417 (claiming priority from U.S. Appl. No. 10/843,221).
Kimmel Ron
Petrank Yael
Sidlesky Avishav
Sudarsky Oded
Dang Duy M
Darby & Darby PC
Mediguide Ltd.
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