Comparisons of computed tomography, contrast-enhanced computed tomography and standing low-field magnetic resonance imaging in horses with lameness localised to the foot. Part 2: Lesion identification.
Authors: Vallance S A, Bell R J W, Spriet M, Kass P H, Puchalski S M
Journal: Equine veterinary journal
Summary
# Editorial Summary: Imaging modalities for equine foot lameness When a horse presents with foot lameness, veterinarians must choose between increasingly sophisticated imaging techniques, yet direct comparisons of their diagnostic capabilities remained largely absent from the literature until this work. Vallance and colleagues evaluated computed tomography (CT), contrast-enhanced computed tomography (CECT) and standing low-field magnetic resonance imaging (LFMRI) in the same lame horses, systematically comparing how each modality detected soft tissue and osseous pathology within the equine foot. The study's findings revealed that whilst CECT and LFMRI offered superior soft tissue visualisation—particularly for ligamentous and cartilaginous lesions—conventional CT proved more efficient for detecting subtle bone changes, with each technique identifying lesions the others had missed in certain cases. Understanding these complementary strengths and limitations helps clinicians select the most appropriate imaging based on their clinical suspicion; for instance, if navicular disease with soft tissue involvement is suspected, LFMRI or CECT would be preferable, whereas early bone remodelling might be more reliably detected with standard CT. This comparative framework ultimately supports more informed decision-making around diagnostic protocols, potentially reducing unnecessary imaging whilst improving diagnostic yield in challenging foot lameness cases.
Read the full abstract on PubMed
Practical Takeaways
- •Understanding the comparative strengths of CT, CECT, and standing LFMRI helps practitioners select the most appropriate imaging modality for specific foot pathology types
- •Standing LFMRI offers a non-invasive alternative to traditional imaging without requiring general anesthesia, but clinicians need to know when each modality has superior diagnostic capability
- •Knowledge of imaging limitations prevents missed diagnoses and guides whether additional or alternative imaging is warranted in equine foot lameness cases
Key Findings
- •This is part 2 of a comparative imaging study examining CT, CECT, and standing LFMRI diagnostic capabilities in equine foot lameness
- •Study compares three imaging modalities to establish their relative strengths and limitations for detecting foot lesions
- •Research designed to guide clinical decision-making regarding appropriate imaging selection for foot lameness cases