What is myelography in dogs? - briefly
Myelography in dogs is an advanced imaging technique used to visualize the spinal cord and its surrounding structures. This procedure involves injecting a contrast agent into the cerebrospinal fluid to enhance the visibility of the spinal cord on X-rays or CT scans, helping veterinarians diagnose conditions such as intervertebral disc disease, tumors, and inflammation.
What is myelography in dogs? - in detail
Myelography, also known as myelogram, is an advanced diagnostic imaging technique used in veterinary medicine to evaluate the spinal cord and its surrounding structures in dogs. This procedure involves injecting a contrast agent into the subarachnoid space of the spine, which outlines the spinal cord and helps visualize any abnormalities or lesions present within this region.
The process begins with the dog being placed under general anesthesia to ensure comfort and safety throughout the procedure. A specialized needle is then carefully inserted into the lumbar area of the spine, typically between the L6-L7 vertebrae, where the cerebrospinal fluid (CSF) resides. Once the needle is correctly positioned, a small amount of CSF is removed to make space for the contrast agent. The contrast material, often iodinated or water-soluble, is then injected into the subarachnoid space.
After the injection, the dog is repositioned to allow the contrast agent to spread along the spinal cord, providing detailed images of its entire length. A series of X-rays are taken to capture the contrast distribution and highlight any irregularities or abnormalities within the spinal canal. This can include herniated discs, tumors, infections, inflammation, or other structural issues that may be affecting the dog's neurological function.
Myelography is particularly valuable when other diagnostic methods, such as MRI or CT scans, are not available or feasible due to their high cost and limited accessibility. It offers a non-invasive way to assess the spinal cord and can provide crucial information for developing an appropriate treatment plan. However, it should be noted that myelography is generally considered less sensitive than MRI in detecting certain soft tissue lesions or subtle changes within the spinal cord.
Following the procedure, the dog is closely monitored during recovery from anesthesia to ensure there are no complications. The contrast agent typically dissipates naturally over time, but in some cases, it may be necessary to administer medications to facilitate its removal. Overall, myelography is a safe and effective diagnostic tool that plays a significant role in the evaluation of spinal cord disorders in dogs, guiding veterinarians towards accurate diagnoses and appropriate treatments.