The different techniques which are utilized for the purpose of viewing the inside of the body in order to ascertain the cause of an injury and confirm a diagnosis fall under the umbrella of diagnostic imaging. A few of the major types of techniques used for diagnostic imaging are MRI scan, CT scan, X-ray, MRA scan and ultrasound. An MRI is a non-invasive test which uses a magnetic field and radio waves for producing images of the brain and brain stem. It can help in detecting abnormalities in small structures of the brain such as pituitary gland and brain stem. CT scans are used for analyzing head injuries, brain tumors, severe headaches, etc. This book attempts to understand the multiple diagnostic imaging techniques that are used for the examination of brain, head, neck and spine. Most of the topics introduced herein cover new diagnostic techniques and their applications. This book is a resource guide for experts as well as students.