Segmentation of Pulmonary Vascular Trees from Thoracic 3D CT Images
Figure 2
A trajectory of vessel segments and value changes of the eigenvalues along the trajectory. Left-most white arrow in (a) shows the starting point of the trajectory that advances left to right. The trajectory is calculated with fixed . oscillates as the front advances and takes negative values close to the junctions indicated by dark gray regions on the trajectory. takes large values at location (1) and (2) making absolute value of the ratio larger. At locations (3) and (4), the ratio becomes small.
