Figure 2. Glioblastoma, right frontal lobe. T₁ weighted image (a) apparent low signal intensity and post-contrast T₁ weighted image (b) lesion with strong peripheral enhancement after contrast material administration. Diffusion-weighted MR image (c) apparent high signal intensity, atypical lesion. Low signal intensity is visualized on apparent diffusion coefficient (ADC) map (d) with ADC value of 1.13 x 10^–3 mm² s^–1.