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Fig. 2 | Insights into Imaging

Fig. 2

From: Brain MR findings in patients treated with particle therapy for skull base tumors

Fig. 2

MRI performed 20 months after 68.8 Gy carbon ion therapy in a patient who previously underwent surgical resection for sinonasal adenoid cystic carcinoma. Axial T2-weighted image (a) shows hyperintensy involving subcortical white matter and gray matter in left polar and mesial temporal regions. Axial post-contrast T1-weighted image (b) reveals the presence of a well-defined contrast-enhancing lesion with central necrotic core (yellow arrow), as in grade 2 injury of LENT-SOMA scoring system. DWI shows no diffusion restriction within the enhancing area, with an hyperintense signal in both DWI-b1000 (c) and ADC map (d), because of “T2-shine through” effect

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