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Summary of dissertation

Computed tomography (CT) of the head is a valuable diagnostic tool that is widely used in equine medicine. However, often the sensitivity for the detection of changes exceeds our ability to correctly interpret findings. Part one of the thesis aimed to improve understanding of CT findings of the head and their relevance to neurological clinical signs. The regions examined included the cholesterinic granulomas within the lateral ventricles of the brain, hyoid apparatus including the temporohyoid joint, and the infraorbital canal. In all cases important information about the prevalence and characterisation of changes or lesions was reported. The association with neurological signs and/or headshaking was examined.

CT can be used as a research tool to increase knowledge in diverse areas beyond its clinical use. In the second part of the thesis, CT was used to analyse and improve technique of perineural injection of the inferior alveolar nerve and application of the retrobulbar nerve block. Accuracy of different guided and non-guided techniques were reported.

The complimentary parts of the thesis increase knowledge and understanding of the use of CT as a diagnostic or research tool in equine neurology.

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