Vascular diseases affect more than just the heart. Vascular medicine deals with peripheral arterial occlusive disease, chronic venous insufficiency, and disorders of microcirculation. Non-invasive diagnostics are an essential complement to modern imaging and a crucial basis for medical decisions. The book emphasizes the importance of non-invasive diagnostics in angiological conditions. It provides a compact and comprehensive overview of the fundamentals of each method and their clinical application. The book is aimed at all medical professionals working in vascular medicine and aspiring doctors, as well as trained specialists. For anyone who has never had the opportunity to engage with the fundamentals of vascular medicine during their training, this book is a must-read.