For a spinal angiogram, where is the catheter first inserted?

In a spinal angiogram, the catheter is typically first inserted in the groin area. Accessing the groin allows for the catheter to be threaded up through the femoral artery into the abdominal aorta. This approach provides a direct route to the arteries that supply the spinal cord, making it efficient for visualizing the blood vessels in that region.

Using the groin for catheter insertion is advantageous because it routes the catheter through larger vessels with minimal patient discomfort and risk. Once the catheter is positioned, contrast material can be injected to obtain images of the vascular anatomy of the spinal cord.

Other anatomical entry points, such as the stomach, heart, or neck, are not standard for spinal angiograms due to the complexities they introduce, such as longer pathways and increased risk of complications. The groin access is a well-established practice in interventional radiology, particularly for vascular procedures, due to its accessibility and effectiveness.