Figure 6.

Summary of APN performance. All results are derived from the networks trained on all five partitions of the UM training set, unless otherwise noted as a k-fold result. (a) Comparison of Dice score distribution on test set. AngioNet has the highest average Dice score, with scores ranging from 0.737 to 0.946. Adding the APN improves the Dice scores of all backbone networks (Deeplabv3+, U-Net, and Attention U-Net). Dashed lines correspond to the Test Dice in the table below. clDice is also summarized in the table, with the Attention U-Net backbone demonstrating highest topology preservation. (b) Segmentation comparison on challenging images with low contrast, faint vessels, and a curved catheter. AngioNet can segment more vessels in these images without segmenting the catheter (red arrows).