| 摘要 |
The present invention relates to a method for characterizing a blood vessel represented by vascular image data, wherein said vascular image data comprises a plurality of voxels each having an image intensity, said method comprising the steps of identifying a set of voxels representing a boundary of the blood vessel; determining a gradient vector of the image intensity for each voxel in said set of voxels representing the boundary of the blood vessel; selecting, from said set of voxels representing the boundary of the blood vessel, a subset of voxels such that all voxels have a common intersection point for their respective gradient vector extensions; and determining a vector product based on said gradient vectors for said subset of voxels, wherein the common intersection point indicates a centre of said blood vessel and said vector product indicates a direction in which said blood vessel extends. |
