Fig. 2From: A retrospective dosimetry study of intensity-modulated radiotherapy for nasopharyngeal carcinoma: radiation-induced brainstem injury and dose-volume analysisNecrosis nidus within the brainstem and the corresponding dose distribution. Contrast-enhanced lesion (white arrow) in the axial (a) and sagittal (c) view on post-contrast T1-weighted MRI images with a 53-year-old NPC patient (the 5th patient in Table 1). Corresponding isodose lines are shown in b and d, respectivelyBack to article page