Figure 1.
Transverse (A, C, E, G, I) and midline sagittal (B, D, F, H, I) T2-weighted MR images of the corpus callosum.
A and B: a 4-month-old normal Beagle dog. Arrowheads (A, B) indicate the corpus callosum, the black arrow (B) indicates the rostral commissure, and the white arrow (B) indicates the fornix. C and D: a 6-month-old Shiba Inu dog with GM1 gangliosidosis (Case no. 1 in Table 1). E and F: a 7-month-old domestic shorthair cat with GM2 gangliosidosis (Case no. 9). G and H: a 21-month-old toy poodle with GM2 gangliosidosis (Case no. 11). I and J: a 19-month-old chihuahua with neuronal ceroid lipofuscinosis (Case no. 18). For detailed evaluations of the corpus callosum, rostral commissure, and fornix in each case refer to Table 1.
Table 1.
Summary of Studied Cases and Those MR Findings.
Table 2.
The agreement between reviewers by weighted κ statistics.
Figure 2.
Macroscopic photographs of the midline sagittal section from a domestic shorthair cat (A: corresponding to Figure 1F) and a toy poodle (B: corresponding to Figure 1H) with GM2 gangliosidosis.
The corpus callosum (arrowheads, although very pale in A), the rostral commissure (black arrow), and the fornix (white arrow) are grossly confirmed in both cases.