This is a procedure by which a contrast material is injected directly into the blood vessel (coronary arteries) and is seen by a specialized X-ray machine which takes picture in real time motion. A small tube is inserted through the groin (femoral artery) or through the hand (radial or ulnar artery) which goes up to the origin of coronary arteries and then the contrast material is injected directly into these arteries.
Balloon Angioplasty and Stenting
This is a procedure used to restore the blood flow through a blocked artery. Dilating the blockage with balloon is called Balloon Angioplasty and deploying a stent is called Stenting. A tiny plastic tube (guiding catheter) is passed through the groin or hand till the origin of coronary arteries, and then a thin soft wire (guide wire) is passed through this tube and is negotiated across the block. Then another tube having a balloon at one end is passed over this wire up to the site of blockage. At this point the balloon is inflated to widen the artery by pushing the plaque against the wall of the artery thereby restoring the blood flow. This technique was first used in 1977 by Andreas Gruentzig and from that day it has evolved dramatically to its current status. Now-a-days after dilating with the balloon, a stent is deployed to keep the artery open.