Our heart pumps blood and oxygen to all the body organs. For pumping, heart muscle also requires oxygen, which is provided to the heart through coronary arteries. A test called coronary angiography shows the inside of your coronary arteries using a special dye and special x-rays. The "Cath lab" is the facility where a test of this type is possible using a special x-ray machine (catheterization laboratory).
Coronary Angiography, One of the most common angiograms performed is to visualize the blood in the coronary arteries. A long, thin, flexible tube called a catheter is used to administer the X-ray contrast agent to the desired area to be visualized. The catheter's tip is moved via the arterial system and into the main coronary artery after being put into an artery in the forearm. The transient radiocontrast distribution within the blood moving inside the coronary arteries may be seen on X-ray pictures, which also allows one to see the size of the artery openings. It is difficult to tell whether there is atheroma or atherosclerosis present within the artery walls.
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