Topology-preserved transformer-based CBCT-CT registration via normalized gradient field guidance for nasopharyngeal carcinoma
Summary Accurate deformable registration between planning CT (computed tomography) and cone-beam CT (CBCT) is essential for adaptive radiotherapy in nasopharyngeal carcinoma, but cross-modality intensity differences, low soft-tissue contrast, and CBCT artifacts complicate alignment. We propose NJTransMorph, an unsuperv...