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Figure 2: Same patient. (a) Diffusion-weighted image demonstrating decreased apparent diffusion coefficient values on apparent diffusion coefficient ADC map. (b) Perfusion-weighted image showing increased regional cerebral blood volume values. (c) Signal intensity-time curve displaying immediate leakage of contrast media due to absence of blood brain barrier which is characteristic of extra-axial tumours, followed by partial and slow recovery of signal intensity ("mother in law" sign)

Figure 2: Same patient. (a) Diffusion-weighted image demonstrating decreased apparent diffusion coefficient values on apparent diffusion coefficient ADC map. (b) Perfusion-weighted image showing increased regional cerebral blood volume values. (c) Signal intensity-time curve displaying immediate leakage of contrast media due to absence of blood brain barrier which is characteristic of extra-axial tumours, followed by partial and slow recovery of signal intensity (