What is the primary purpose of a fistulogram in veterinary radiography?

The primary purpose of a fistulogram in veterinary radiography is to track a draining tract. This imaging technique is specifically designed to visualize abnormal passageways or communication pathways that may occur due to disease processes, trauma, or infection in an animal. The fistulogram involves the administration of a contrast medium into the fistulous tract, allowing radiographs to illustrate the outline and extent of the tract and how it connects to surrounding structures.

This procedure is particularly useful for diagnosing conditions such as abscesses or chronic infections, as it can provide detailed information about the nature and trajectory of the draining tract that would not be visible with standard radiography. Understanding the course of the fistula helps veterinarians in planning treatment and managing the underlying conditions effectively.

The other options, while related to specific areas of veterinary radiography, do not encompass the purpose of a fistulogram, which is singularly focused on examining and mapping out those abnormal draining tracts.