Vascular reformatting using curved planar reformation
View Patent ↗A method for curved planar reformation of an image includes receiving a data volume including a medial axis tree of a vessel tree, determining a global rotation axis of the medial axis tree, and casting a line segment from a vessel tree root of the medial axis tree into a predefined direction perpendicular to the global rotation axis. The method includes projecting the medial axis tree onto a reference plane along the line segment. The method further includes re-sampling, from at least one medial axis point of a reference plane, the data volume using a vector perpendicular to a medial axis tangent of the reference plane, wherein the vector defines a sampling direction. The method includes rendering an image of the vessel tree along the vector.
1. A computer-implemented method for curved planar reformation of an image comprising:
receiving a data volume including a medial axis tree of a vessel tree, wherein each medial axis of the medial axis tree bifurcates an area between adjacent branches of the vessel tree;
determining a global rotation axis of the medial axis tree;
casting a line segment from a vessel tree root of the medial axis tree into a predefined direction perpendicular to the global rotation axis;
projecting the medial axis tree onto a reference plane along the line segment;
re-sampling, from at least one medial axis point of a reference plane, the data volume using a vector perpendicular to a medial axis tangent of the reference plane, wherein the vector defines a sampling direction; and
rendering an image of the vessel tree along the vector.
2. The computer-implemented method of claim 1 , wherein determining a global rotation axis further comprises determining a center of gravity of the medial axis tree, wherein the global rotation axis passes through the center of gravity and the vessel tree root of the medial axis tree.
3. The computer-implemented method of claim 1 , wherein projecting further comprises:
determining values for each x-coordinate of the reference plane as a distance from a respective centerline point of the medial axis tree to the reference plane; and
determining values for each y-coordinate of the reference plane as an absolute travel distance to the vessel tree root measured along the medial axes tree.
4. The computer-implemented method of claim 1 , wherein rendering further comprises a partitioning of the projected medial axis tree along a plurality of parallel scan lines.
5. The computer-implemented method of claim 4 , further comprising assigning a partition between each medial axis in the reference plane, the partition having an edge defined as an edge of the reference plane.
6. The computer-implemented method of claim 4 , further comprising assigning a partition between each medial axis in the reference plane, the partition having an edge defined as a center point of a medial axis.
7. The computer-implemented method of claim 6 , wherein each partition comprises a plurality of line sections, each line section being filled with voxel data obtained by scanning along a vector around an assigned line section.
8. The computer-implemented method of claim 1 , wherein a length of the line segment is determined as a maximum distance among all medial axis tree points to the global rotation axis.
9. A non-transitory computer readable medium embodying instructions executable by a processor to perform a method for curved planar reformation of an image, the method steps comprising:
receiving a data volume including a medial axis tree of a vessel tree, wherein each medial axis of the medial axis tree bifurcates an area between adjacent branches of the vessel tree;
determining a global rotation axis of the medial axis tree;
casting a line segment from a vessel tree root of the medial axis tree into a predefined direction perpendicular to the global rotation axis;
projecting the medial axis tree onto a reference plane along the line segment;
re-sampling, from at least one medial axis point of a reference plane, the data volume using a vector perpendicular to a medial axis tangent of the reference plane, wherein the vector defines a sampling direction; and
rendering an image of the vessel tree along the vector.
10. The computer readable medium of claim 9 , wherein determining a global rotation axis further comprises determining a center of gravity of the medial axis tree, wherein the global rotation axis passes through the center of gravity and the vessel tree root of the medial axis tree.
11. The computer readable medium of claim 9 , wherein projecting further comprises:
determining values for each x-coordinate of the reference plane as a distance from a respective centerline point of the medial axis tree to the reference plane; and
determining values for each y-coordinate of the reference plane as an absolute travel distance to the vessel tree root measured along the medial axes tree.
12. The computer readable medium of claim 9 , wherein rendering further comprises a partitioning of the projected medial axis tree along a plurality of parallel scan lines.
13. The computer readable medium of claim 12 , wherein the method further comprises assigning a partition between each medial axis in the reference plane, the partition having an edge defined as an edge of the reference plane.
14. The computer readable medium of claim 12 , wherein the method further comprises assigning a partition between each medial axis in the reference plane, the partition having an edge defined as a center point of a medial axis.
15. The computer readable medium of claim 14 , wherein each partition comprises a plurality of line sections, each line section being filled with voxel data obtained by scanning along a vector around an assigned line section.
16. The computer readable medium of claim 9 , wherein a length of the line segment is determined as a maximum distance among all medial axis tree points to the global rotation axis.