Catheter-Based Pulmonary Angiography
Catheter-based pulmonary angiography is the most accurate diagnostic test to detect the presence of pulmonary embolism. The doctors opt for catheter-based pulmonary angiography when other tests show unclear results. A specialist in surgery inserts a thin and long tube or catheter into a large vein in patient’s groin and into the arteries of lung. Then, the surgeon injects dye through the catheter and images of blood vessels start popping up inside the lung on an X-ray. However, catheter-based pulmonary angiography is now a rare and old-fashioned procedure because of CTPA.