Magnetic resonance imaging (MRI) of the brain. Dorsal view T2 weighted (T2W) ( , , ), T1W ( , , ) and T1W post contrast ( , , ): dog 1: ( - ), dog 2: ( - ), dog 3: ( – ). Well-delineated extraaxial mass (arrow), T1W hypo- to isointense, T2W hyperintense to surrounding tissue, homogeneous contrast enhancement. The mass is compressing the olfactory bulb (B-F)/ frontal lobe (G-I). An additional intraaxial lesion of the parenchyma supplied by the middle cerebral artery, hypointense in T1W and hyperintense in T2W (asterisk) to normal grey matter with heterogeneous ring enhancement (hash)
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