Book excerpt: Non-radiology experts learn how to prepare patients for X-rays, assess radiographic images, and understand interventions based on the results. More than 100 photographs of actual X-rays help readers identify improper internal tube and line placement, common respiratory conditions, strains, sprains, dislocations, and fractures and detect foreign bodies, trauma, abnormal bowel patterns, and more. All instructions are written in familiar terminology. Contents include basic principles of radiology and instructions for understanding films of every major body system with a case study for each.