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Fig. 3 | Radiation Oncology

Fig. 3

From: Radiation-induced parotid changes in oropharyngeal cancer patients: the role of early functional imaging and patient−/treatment-related factors

Fig. 3

A 68-year-old man affected by a tonsil carcinoma: dose distribution overlaid on the central section of the parotid glands on axial CT (a); T2-weighted images before, at 2 weeks of radiotherapy and 8 weeks after radiotherapy (b) documenting a substantial gland shrinkage; the corresponding maps of Ktrans in min− 1 (c) and IAUGC in a.u. (d), at baseline, indicating well perfused parotids. Curves of DW-signal attenuation of parotids at baseline and during RT (e): the modification of the DW-signal attenuation curves during RT documents a noticeable increase in tissue water diffusivity, suggesting a considerable decrease in cell density as a consequence of the radiation damage

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