Radiology is a specialization in medicine, which uses imaging techniques to diagnose and treat diseases. Imaging modalities used in radiology are projection radiography, computed tomography, magnetic resonance imaging, fluoroscopy, nuclear medicine, etc. A subspecialty of radiology is interventional radiology in which minimally invasive procedures are carried out using image guidance. Examples of these are angiography and angioplasty. Such procedures are used in the case of renal artery stenosis, peripheral vascular disease, inferior vena cava filter placement, hepatic intervention, biliary stent, etc. This book provides comprehensive insights into the field of diagnostic radiology. It traces the progress of this field and highlights some of its key aspects and applications. The extensive content of this book provides the readers with a thorough understanding of the subject.