The technique of angioplasty and some other methods employed in vascular stenosis have been elucidated in this book. The area of operating transcatheter interventions for treating vascular lesions has multiplied manifolds over the past 20 years, and not only has the technology transformed, particularly in the field of balloon/stent devices, but the techniques of approaching intricate lesions has advanced over the last decade. Lesions that no one would have thought of diagnosing back in the 1990's are now being diagnosed frequently in the catheterization suite. This book presents an up-to-date account on the present techniques and devices used to treat a diverse variety of lesions. Though, at first, the outward appearance of these subjects appears to be diverse, they are all connected by the basic thread of treating vascular lesions. Through this book, we aim to offer awareness from experts in their areas to treat, both medically and procedurally, complex vascular lesions that we so commonly encounter and to promote increased communication between areas of medicine that usually does not happen between adult interventional cardiologists, pediatric interventional cardiologists, interventional radiologists, and neurosurgeons. A lot could be learned from respective colleagues in these fields which can further the world of interventions.