Domain-aligned self-supervision: CT-specialized DINOv3 enhances PET/CT tumor segmentation.
OBJECTIVE This study investigates how domain-aligned self-supervised pretraining influences downstream PET/CT tumor segmentation, with a focus on disentangling the roles of domain proximity and pretraining dataset scale. Approach: We compared nnU-Net segmentation models initialized from random weights or from DINOv3 en...