Figure 4From: 3D-image-guided HDR-brachytherapy versus 2D HDR - brachytherapy after external beam radiotherapy for early T-stage nasopharyngeal carcinoma Five-year actuarial survival curves for the 3D-HDR-BT group and the 2D-HDR-BT group. (a) local control survival (LCS); (b) local/regional relapse-free survival (LRFS).Back to article page