Figure 11
Irradiated oropharyngeal cancer with residual lymphnode enlargement (arrows). A: axial TSE T2-weighted image shows heterogeneous enlargement of the irradiated lymphnodes. B, C, D: Diffusion weighted images in transverse plane demonstrate inhomogeneous restricted diffusion with increased signal on DW-images (B: b value of 50 s/mm2, C: b value of 800 s/mm2) and decreased signal on ADC map (D) corresponding residual tumour in the nodes.