Figure 2.

Transverse (A–C,F) and Dorsal (D,E) magnetic resonance images of a dog (Case 6) with a solitary well-defined intracranial intra-axial hematoma affecting the white matter of the right occipital lobe and associated perilesional oedema. The lesion displays a clear regional dichotomy with a hypointense thin, complete, circumferential peripheral border region (white arrows) and a large central predominately hyperintense region (relative to gray matter) on T2-weighted (A,D), T2* gradient-echo (B) images. On pre-contrast T1-weighted images the peripheral border region is again hypointense (C) but is thinner relative to the T2-weighted images. Following contrast administration, the hematoma displays a thin peripheral enhancement pattern (white arrow heads) with no enhancement of the central portions of the lesion (E,F).