MRI in 30 cats with traumatic brain injury

Area of Science:

• Veterinary Neurology
• Diagnostic Imaging
• Neuro-oncology

Background:

• Traumatic brain injury (TBI) is a significant cause of neurological deficits in cats.
• Magnetic Resonance Imaging (MRI) is crucial for evaluating brain structure and identifying injury patterns.
• Understanding the correlation between specific MRI findings and prognosis is vital for clinical management.

Purpose of the Study:

• To evaluate MRI findings in cats following traumatic brain injury (TBI).
• To identify specific MRI features that correlate with patient prognosis.
• To compare feline TBI MRI findings with those reported in canine studies.

Main Methods:

• Retrospective review of MRI scans from 30 cats with clinical signs attributed to TBI.
• Assessment of imaging features, including parenchymal injury, lesion laterality, mass effect, and herniation.
• Correlation of imaging findings with patient outcomes (good recovery vs. poor outcome/death).

Main Results:

• Twenty-one of 30 cats had a good outcome; nine had a poor outcome.
• Parenchymal injury was present in 20/30 cats, including 8/9 with poor outcomes.
• Bilateral/multifocal lesions on T2-weighted imaging and caudal transtentorial herniation were significantly associated with poorer outcomes.
• Concurrent soft tissue injury, particularly peripharyngeal and orbital trauma, also correlated with a poorer prognosis.

Conclusions:

• Specific MRI findings, including lesion pattern and mass effect, are predictive of outcome in feline TBI.
• The patterns of brain injury and prognostic indicators in cats may differ from those in dogs.
• Further research is needed to establish cat-specific guidelines for interpreting brain MRI following trauma.