ESMR or Extracorporeal Shockwave Myocardial Revascularization is also known as Non invasive Cardiac Angiogenesis therapy (Ni-CATh). ESMR therapy is a new non invasive therapy approach which uses Extracorporeal Shockwave technology to improve the blood supply to heart muscles. This shockwave therapy causes new blood vessel formation in the heart improving myocardial vascularization. ESMR is latest in the treatment of coronary artery blockages. The conventional treatment of blocked coronary arteries is angioplasty and bypass surgery.