The work presents application areas of computed tomography (CT) from single-slice to dual-source CT in a concise and understandable manner using visual material. It begins with an introduction to the technical possibilities of CT, including device and patient preparation, contrast agent application, image quality, artifacts, windowing techniques, radiation protection, quality assurance, and image post-processing. The core of the book encompasses the various examinations, with a specific focus on the tasks of users: positioning, marking the scan paths, selecting examination parameters as well as secondary raw data sets, and marking for different post-processing techniques (MPR, MIP, VRT...) including result images. This book serves as a textbook for students of radiologic technology, medical technical schools, and as a reference work for professionals in the field.