Vascular Data Processing and Image Registration Systems, Methods, and Apparatuses
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Abstract
In part, the invention relates to processing, tracking and registering angiography images and elements in such images relative to images from an intravascular imaging modality such as, for example, optical coherence tomography (OCT). Registration between such imaging modalities is facilitated by tracking of a marker of the intravascular imaging probe performed on the angiography images obtained during a pullback. Further, detecting and tracking vessel centerlines is used to perform a continuous registration between OCT and angiography images in one embodiment.
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Citations
25 Claims
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1-8. -8. (canceled)
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9. A method of detecting an intravascular probe marker comprising obtaining a first frame of angiography image data that is substantially free of contrast agent image data and includes the intravascular probe marker;
- obtaining a second frame of angiography image data that comprises contrast agent image data in the vicinity of the intrasvascular probe marker; and
detecting the intravascular probe marker in the first frame and the second frame. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
- obtaining a second frame of angiography image data that comprises contrast agent image data in the vicinity of the intrasvascular probe marker; and
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19. A processor-based method of co-registering angiographic image data and intravascular image data obtained during a pullback through a blood vessel comprising
storing a plurality of frames of optical coherence tomography data in memory; -
storing a plurality of frames of angiography image data in memory; processing the plurality of frames of angiography image data such that one or more shadows are substantially reduced; detecting a catheter in the plurality of frames of angiography image data; removing the detected catheter in the plurality of frames of angiography image data; generating a vessel centerline for the plurality of frames of angiography image data; detecting a probe marker in the plurality of frames of angiography image data; tracking a position of the probe marker along one or more vessel centerlines; and co-registering the plurality of frames of angiography image data and the plurality of frames of optical coherence tomography data using the tracked position. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification