Fig. 3From: Prognostic value of the distance between the primary tumor and brainstem in the patients with locally advanced nasopharyngeal carcinomaSurvival curves of the patients with locally-advanced NPC stratified by the distance between the primary tumor and brainstem (Dbs > 4.7 mm or ≤ 4.7 mm, a-d); the sacrificed volume of PGTVnx (SV-PGTVnx ≤ 0 ml or > 0 ml, e-h); and the minimum radiation dose of primary tumor (GTVnx Dmin ≥ 66Gy or < 66 Gy, i-l)Back to article page