Encompasses today's full range of modalities and techniques, including conventional radiology, multislice CT including multiplanar reformation (MPR) and volume-rendered imaging, CT angiography, conventional angiography and vascular intervention, MRI and MR angiography. Assesses the advantages and limitations of various modalities, presents imaging decision-making algorighms for a variety of scenarios, and discusses the clinical aspects of major injuries and critical care complications in conjunctgion with imaging findings to foster a multidisciplinary understanding of each problem.