Esophageal insufflation computed tomography in clinically normal dogs.

Area of Science:

• Veterinary Radiology
• Comparative Medical Imaging
• Canine Anatomy

Background:

• Computed tomography (CT) is crucial for diagnosing esophageal conditions in dogs.
• Esophageal evaluation often requires specialized techniques to visualize the lumen and wall effectively.

Purpose of the Study:

• To determine the feasibility of using esophageal insufflation CT (EICT) for examining the esophagus in dogs.
• To assess how different CO2 insufflation pressures affect esophageal measurements.

Main Methods:

• Seven clinically normal Beagles underwent two anesthesia sessions for CT scans.
• Esophageal CT scans were performed at 0, 5, and 10 mm Hg CO2 insufflation pressures, with and without contrast.
• Esophageal luminal cross-sectional area and wall thickness were measured and compared.

Main Results:

• Increasing insufflation pressure significantly increased esophageal luminal area and decreased wall thickness.
• No significant differences were found between unenhanced and contrast-enhanced EICT images.
• Stomach distension occurred at 10 mm Hg, but not at 5 mm Hg, with no adverse events.

Conclusions:

• Esophageal insufflation CT (EICT) appears feasible for evaluating the canine esophagus.
• Further research is needed to optimize insufflation pressure and assess diagnostic value in diseased dogs.