Figure 5From: 3D-image-guided HDR-brachytherapy versus 2D HDR - brachytherapy after external beam radiotherapy for early T-stage nasopharyngeal carcinoma Five-year actuarial survival curves. (a) disease-free survival (DFS); (b) overall survival (OS); (c) cause-specific survival (CSS); and (d) distant metastasis-free survival (DMFS).Back to article page