Fig. 3

MR imaging of the NPC patient at 3 months after treatment. T1-weighted axial MR image of the nasopharynx a without contrast, b with contrast, and c T2-weighted axial MR image of the nasopharynx show edema signal of the nasopharyngeal mucosa but no mass. T1-weighted axial MR image d with contrast of previous occipital lymph node level and e T2-weighted axial MR image of previous occipital lymph node level show normal structure now. T1-weighted sagittal MR images f without contrast and g with contrast reveal no mass as well