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Figure 1. MRI and diffusion weighted imaging(DWI) from a patient with anaplastic astrocytoma. (a) T2 weighted image. (b) T1 weighted MR image with contrast material. (c) DWI (b = 1000). (d) Apparent diffusion coefficient (ADC). The tumour exhibited typical hyperintense on T2 weighted images; peritumoural oedema and mass effect was present; no contrast enhancement. On DWIs (b = 1000), the signal intensity in the solid portion of the tumour was hyperintense with respect to the white matter; lower ADC values were present in the solid portions of high grade gliomas.
