In abdominal aortography, the catheter is typically placed at which vertebral level?

In abdominal aortography, the catheter is typically placed at the vertebral level of T12 to L1. This location corresponds with the anatomical position of the abdominal aorta as it transitions from the thoracic aorta to the abdominal cavity. At T12, the aorta passes through the diaphragm and is positioned right at the upper boundary of the abdomen. In this area, the catheter can easily navigate into the aorta for imaging purposes without interfering with surrounding structures.

Placing the catheter at T12 to L1 also allows optimal access to visualize the major branches of the aorta, such as the renal arteries and the mesenteric arteries, which are essential for assessing vascular conditions. Understanding the precise anatomical landmarks helps ensure successful catheter placement and enhances imaging quality, which is crucial for accurate diagnosis and treatment planning.