Image Interpretation and Diagnosis

As with all imaging analyses, interpretation needs an organised and comprehensive approach. This chapter describes the process, step by step, from ‘how to start’ to the specific ways to interpret transverse images and multiplanar reformation or reconstruction (MPR), spinal computed tomography (CT) images and general interpretation of CT images of joints. It discusses post-processing tools and 3D techniques and weighs the advantages of the three-dimensional scanner, explaining the use of 3D CT in orthopaedic surgery and neurosurgery, how to choose surgical procedures and plan for surgery based on the CT and how to evaluate growth deformities and limb alignment. It also looks at how to check the outcomes of surgical procedures. Finally, this section explores the facilitation of client communication. The next section considers the role of CT scans in articular fracture imaging, pelvic fractures, maxillofacial trauma, accurate visualisation of fractures and the extent of bone involvement, detection of occult fractures, identification of soft-tissue damage and assessment of joint instability, correct evaluation of fractures in immature animals and postoperative control of joint reconstruction and implant positioning. This chapter concludes with a discussion of how to reach a diagnosis.