Radial route has been used for diagnostic angiography as well as therapeutic purposes, i.e., coronary angioplasty or PTCA, i.e., percutaneous transluminal coronary angioplasty.  Through the same procedure as angiography, a wire is taken down to the coronary artery with blockage and put across the blockage. Then a balloon is inflated across the blockage to make an appropriate place for a stent. Following this, a stent is deployed across the blockage, which scaffolds the artery and prevents further recurrence of blockage in the future.