MR imaging of seizures in a dog

An adult Bichon Frise first presented, aged 9 years, with seizures. CSF, bloods and MRI at initial presentation were all said to be normal and the dog responded well to medical treatment.

Initial MRI (T2W TSE)

Some nine months later, deterioration in seizure control occurred with the dog experiencing a cluster of seizures. Medication was increased and the patient was referred for a second MRI. On this occasion an ill-defined area of T2W hyperintensity was found in the ventral aspect of the right temporal lobe and hippocampus with corresponding T1W hypointensity.

 

T2W TSE                                                                                                                                       T1W IR

Diffusion weighted imaging was not available at the time of the initial scan as this was carried out on a low-field scanner but DWI on this occasion demonstrated no evidence of restricted diffusion. A diagnosis of non-haemorrhagic infarct was made.

DWI