Volumetric measurements of paranasal sinuses and examination of sinonasal communication in healthy Shetland ponies: anatomical and morphometric characteristics using computed tomography.
Authors: Köhler Lisa, Schulz-Kornas Ellen, Vervuert Ingrid, Gittel Claudia, Winter Karsten, Berner Dagmar, Gerlach Kerstin
Journal: BMC veterinary research
Summary
# Editorial Summary Understanding the normal anatomy and dimensions of the paranasal sinuses in ponies is essential for diagnosing and treating sinus disease, yet remarkably little reference data exists for smaller equines despite the clinical prevalence of sinus problems in this population. Researchers used computed tomography and three-dimensional reconstruction to map the seven distinct sinus compartments in 12 healthy adult Shetland ponies, taking linear measurements of head dimensions and employing semi-automatic segmentation to create volumetric models of each sinus space. The study established baseline volumetric measurements for all sinus compartments and determined whether sinus volumes correlate with age and overall head size—data that will serve as a critical reference standard when evaluating diseased sinuses in clinical practice. These anatomical benchmarks are particularly valuable for farriers and veterinarians managing sinus infections, empyema, or other obstructive conditions in ponies and small horses, as diagnosis and treatment planning depend on recognising what constitutes abnormal sinus volume or communication. Armed with species and size-specific reference values, equine professionals can now more confidently differentiate pathological changes from normal anatomical variation in this frequently affected population.
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Practical Takeaways
- •Understanding normal paranasal sinus anatomy and volume in Shetland ponies provides a critical reference baseline for diagnosing sinus disease and abnormalities in this population
- •The documented sinonasal communication patterns can inform treatment approaches for sinus infections, allowing practitioners to predict drainage pathways and optimize therapeutic interventions
- •CT imaging with 3D reconstruction is a reliable diagnostic tool for detailed sinus assessment when sinus disease is suspected in ponies
Key Findings
- •3D CT reconstruction successfully characterized seven distinct paranasal sinus compartments in healthy Shetland ponies with volumetric measurements obtained
- •Sinonasal communication pathways were identified and anatomically mapped using semi-automatic segmentation techniques
- •Significant asymmetry was found between left and right sinus compartments in individual ponies
- •Sinus volumes showed variable relationships to age and head size measurements across the study population