Magnetic resonance imaging application to live horse for diagnosis of tendinitis.

The researchers used magnetic resonance imaging (MRI) to diagnose degrees of tendonitis in horses and compared the results to ultrasonographic (USD) and histologic diagnoses, ultimately concluding that MRI is more effective, especially in identifying chronic scar tissue.

Research Design and Sample

In this study, the scientists examined six live horses that exhibited varying levels of superficial digital flexor (SDF) tendonitis, from acute to chronic stages.

• The researchers selected horses as their subjects, acknowledging the high occurrence of SDF tendonitis in the species.
• By studying live subjects, the researchers were able to gather real-time data and gain insights into how the disease progresses.

Methodology

The research team used both MRI and USD to diagnose and compare the extent of tendonitis in the horses.

• Each horse was examined using both imaging techniques to provide a detailed understanding of the condition.
• Histological findings were used as a reference point, providing accurate localization and determination of the lesions’ size and extent.
• The USD and MRI findings were then compared to the histological findings to determine which imaging technique was the most effective.

Findings

The MRI results demonstrated a high signal intensity signifying hemorrhage in acute tendinitis cases, which appeared as hypoechoic regions in USD.

• For the chronic cases, MRI presented the lesions as a low intensity signal which could easily be distinguished against the black backdrop of the normal SDF tendon tissue.
• In contrast, USD rendered chronic tendon fibrosis slightly hyperechoic, making it challenging to differentiate normal tendon tissue from the affected area.

Conclusion

The study found MRI superior in detecting chronic scar tissue in tendinitis cases compared to USD. The researchers believe that using MRI for diagnosing tendinitis, especially where there are chronic scars, could yield more accurate diagnoses. This could potentially inform subsequent treatment pathways and improve the prognosis for horses suffering from this condition.