Percutaneous transluminal balloon angioplasty has gained wide acceptance in the treatment of coronary artery disease. However the major drawback of this procedure is the problem of restenosis which varies between 13 and 57%. [1] With the exception of intracoronary stents, which has been shown to reduce restenosis rates, all other attempts to reduce restenosis by pharmacological or mechanical means have been unsuccessful. Intracoronary radiation therapy is a new and exciting approach to the prevention and treatment of rest