The trauma chapter launches into an anatomic description of the skull and dural layers followed by intracranial hemorrhage patterns. Epidural, subdural, subarachnoid, and intraparenchymal hemorrhages are reviewed in detail, including etiology, anatomy, routine case presentations, complications, and critical radiologic findings. Each is accompanied by MRI and/or CT examples. Discussion and graphic illustration of blood degradation on CT and MR imaging are interwoven into the text to help establish the chronology of hemorrhage as well as understand the relevant physics, which is testable material. Subsequent review of diffuse axonal injury occurs, including patient prognosis based on MRI findings. This is followed by important herniation patterns to recognize, such as uncal, cerebellar tonsillar, and subfalcine. Craniofacial trauma review covers the anatomy of the face and calvarium. There is a review of the basic anatomy as well as the buttress system, which is useful in communicating with surgeons. Common fracture patterns, including LeFort, orbital, skull base, temporal, and calvarial are discussed with multiple examples provided. Orbital soft tissue trauma is also included. Pediatric abusive head trauma is discussed with salient statistical, clinical, and radiologic considerations. The chapter is concluded with a discussion of spinal fractures, pseudoaneurysms and dissections, and spinal hematomas.