Stenosis of the ostial anterior interventricular artery (AIA) is a complex lesion posing several technical challenges to the interventional cardiologist for percutaneous revascularization.This book looks at the clinical and angiographic characteristics of patients who have undergone ostial AVI angioplasty, and their medium-term prognosis depending on the angioplasty technique used.Indeed, two techniques can be proposed to the patient: ostial stenting and crossover stenting, depending on the angiographic presentation of each patient.All in all, this book is a valuable aid to the clinician, helping him or her to make the best decisions and provide the best care, based on contemporary knowledge.