Publications by authors named "S H Brounts"
Objective: To evaluate the radiation dose to personnel locations during simulated head and limb scans with a novel equine standing CT (sCT) system.
Methods: Measurements were made with the use of a helical fan beam sCT system (Equina; Asto CT Inc). Scatter radiation was measured in different positions in the sCT room to mimic the location of the control operator, horse handler, and lead rope handler during simulated equine head and limb imaging.
Comparison of radiography and computed tomography for identification of third metacarpal structural change and associated assessment of condylar stress fracture risk in Thoroughbred racehorses.
Equine Vet J
August 2024
Article Synopsis
- - The study investigates how effective digital radiographs (DR) and standing computed tomography (sCT) are in assessing the risk of condylar stress fractures in Thoroughbred racehorses, which can lead to catastrophic injuries.
- - Four observers analyzed images of 31 horses, focusing on bone structure changes, and found that while both imaging methods had high specificity, the sensitivity for detecting structural changes was relatively low.
- - Results indicated that sCT provided better repeatability and reliability for risk assessments compared to DR, particularly for identifying horses at high risk of injury.
Objective: To describe the feasibility of a novel thread-transecting technique for the tenotomy of the equine deep digital flexor tendon (DDFT).
Animals: 39 equine distal limb specimens.
Methods: Under ultrasonographic guidance, a surgical thread was percutaneously placed around the DDFT through 2 needle punctures (lateral and medial) using a Tuohy needle in equine limbs (22 forelimbs, 17 hindlimbs).
Article Synopsis
- Spontaneous tendon and ligament ruptures, particularly degenerative suspensory ligament desmitis (DSLD), are common in equine species, especially affecting breeds like the Peruvian Horse, suggesting a genetic link.
- A study involving 183 Peruvian Horses identified 151 risk-related genetic markers (SNPs) associated with DSLD and highlighted heritability estimates around 0.22, indicating a moderate genetic influence.
- The research discovered significant genomic regions on several chromosomes, pinpointed 66 genes with selection signatures, and indicated that pathways like proteoglycan metabolism and hedgehog signaling may play roles in DSLD risk, with strong predictive performance achieved using genomic modeling.
Objective: To develop and describe a minimally invasive, ultrasound-guided, percutaneous technique for the desmotomy of equine palmar/plantar annular ligaments (PALs) using a transecting thread.
Study Design: Ex vivo study.
Sample Population: Twenty-one normal equine distal limb specimens.