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1. WO2007002685 - CO-REGISTRATION OF GRAPHICAL IMAGE DATA REPRESENTING THREE-DIMENSIONAL VASCULAR FEATURES

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

What is claimed is:

1. A method for creating images of vascular features from a combination of image data sources, the method comprising:
creating an angiographic image of a vessel segment;
acquiring a vessel image data set, comprising information distinct from the angiographic image data, comprising information acquired at a series of positions along the vessel segment; and
correlating, by comparing a characteristic rendered independently from both the angiographic image and the vessel image data at positions along the vessel segment, instances of the vessel image data to points along the angiographic image of the vessel segment.

2. The method of claim 1 wherein the vessel image data set comprises intravascular ultrasound image data.

3. The method of claim 1 wherein the characteristic comprises area of a circumferential cross-section at a position along the vessel segment.

4. The method of claim 1 wherein the correlating step is applied to correct a linear displacement.

5. The method of claim 4 wherein the correlating step is applied to correct a rotational displacement.

6. The method of claim 5 wherein a limit applied to an actual set of angular displacement calculations to render a fit angular rotation set.

7. The method of claim 1 further comprising the step of designating at least one fiduciary point, thereby providing a point of reference, on the angiographic image for performing the correlating step.

8. The method of claim 1 further comprising generating a graphical display of a three-dimensional representation of the vessel segment wherein positioning of image elements, rendered from instances of the vessel image data, is based upon the correlating step.

9. The method of claim 8 wherein the three-dimensional representation of the vessel segment comprises display artifacts indicative of a non-linear path of the vessel segment.

10. The method of claim 9 wherein the three-dimensional representation of the vessel segment comprises display artifacts indicative of relative positions of vascular disease within walls of the vessel segment.

11. The method of claim 8 wherein the three-dimensional representation of the vessel segment is suitable for visually guiding a treatment directed to a particular circumferential range within a particular portion of the vessel segment.

12. The method of claim 11 wherein the treatment comprises directional atherectomy.

13. The method of claim 11 wherein the treatment comprises placement of a stent.

14. The method of claim 13 wherein the stent is non-uniformly fabricated.

15. The method of claim 13 wherein the stent is drug eluting.

16. The method of claim 13 wherein multiple stents are carried on a single device.

17. The method of claim 8 wherein the three-dimensional representation of the vessel segment comprises an overlay of image data reconstructed from the vessel image data set and a two-dimensional angiographic image.

18. The method of claim 8 wherein the three-dimensional representation of the vessel segment comprises a maximum thickness line and a minimum thickness line generated from the vessel image data set.

19. The method of claim 8 wherein the three-dimensional representation of the vessel segment comprises graphically represented information indicative of a volume and composition of plaque over a chosen length of the vessel segment.

20. The method of claim 8 wherein the three-dimensional representation of the vessel segment comprises graphically represented information indicative of plaque thickness at each of two sides of the vessel segment.

21. The method of claim 1 wherein instances of the vessel image data correspond to image frames for particular circumferential cross-sections of the vessel segment.

22. The method of claim 1 wherein the angiogram image is a three-dimensional angiogram image.