Final answer:
To cannulate the right coronary system in a patient with a dilated aortic root, the Judkins Right catheter would be a suitable choice.
Step-by-step explanation:
To cannulate the right coronary system in a patient with a dilated aortic root, you would most likely need to use the Judkins Right catheter. The Judkins Right catheter has a shorter curvature and is designed to navigate the dilated aortic root more effectively, allowing for successful cannulation of the right coronary system. The other catheters listed (Amplatz Left, Multipurpose, and Tiger) are not specifically designed for cannulating the right coronary system.