Magnetic resonance brain tumor imaging in canine glioma.

This study investigates a canine model of experimental brain tumor. Particularly addressed was the usefulness of gadolinium contrast-enhanced MRI for differentiating brain tumor tissue from cerebral edema. Cultured canine glioma cells were injected into the left hemispheres of six adult mongrel dogs. All dogs developed brain tumors. Serum samples drawn prior to and serially after tumor inoculation showed development of antibodies reactive to the tumor. All tumors were visualized with MRI. Contrast-enhanced T1-weighted imaging was the most sensitive with gadolinium producing tumor enhancement due to blood-brain barrier breakdown. Gross and microscopic autopsy findings correlated well with MRIs.