| 摘要 |
The invention relates to a method of analysing an object data set in which a tubular structure having a plurality of branches and bifurcations occurs, wherein said object data set assigns data values to positions in a multi-dimensional space, which data values relate to an object to be examined. In order to improve accuracy when applying the invention particularly for fully-automated vessel tracing, particularly in the vessel structure of the brain of a patient, the following steps are proposed according to the invention: finding the extremities of the branches of said tubular structure, forming a skeleton of branches and bifurcations by a peeling step, forming directional graphs for the branches of said skeleton between two neighbouring bifurcations or between a bifurcation and an extremity based on said skeleton, assigning a label to the positions along the directional graphs, wherein for each branch of each directional graph aunique label is selected, determining the geometry of the branches and bifurcations of said tubular structure so that positions can be classified as belonging to either a bifurcation or a branch, andassigning a final label to the positions along the branches and of the bifurcations of said tubular structure, wherein for each branch and each bifurcation a unique label is selected. |
