Catheterization serves both diagnostic and treatment purposes. Angiography is primarily used to assess coronary arteries and heart anatomy, aiding in the diagnosis of heart diseases by visualizing blood vessels. It helps determine the location and size of blockages. Additionally, this method can be used for treatment by delivering drugs directly into the body. Sometimes, angiography assists doctors in selecting the most effective treatment method to ensure proper blood flow in the heart. Catheters used in this procedure are long, with their tips advancing into the heart, coronary, or pulmonary arteries. Typically, these catheters have tapered end tips and curved proximal ends connected to hubs or connecting devices.