Howell Fu, Ashwini Bahl & Ramy Mansour
CT uses X-rays to acquire three-dimensional images and is well suited to visualizing bone structures. It offers rapid, high-resolution scans, which are cost-effective and safe for patients with metallic implants and cardiac devices. This chapter provides an overview of the principles of image formation and artifacts and uses this as a foundation to discuss innovations such as dual-energy CT and photon-counting CT. An introduction is provided to the CT anatomy of the hip and pelvis, followed by discussion of a range of applications of CT imaging, including trauma, oncology, femoroacetabular impingement, and surgical planning. Finally, an overview is provided of the techniques for arthrography and various CT interventions, including biopsy, ablation, cementoplasty, and sclerotherapy, with a discussion of their indications, advantages, and disadvantages.