Atlas of normal radiographic anatomy & anatomic variants in the dog and cat [electronic resource] / Donald E. Thrall, DVM, PhD, DACVR (Radiology, Radiation Oncology), Clinical Professor, Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, Quality Control Radiologist, VDIC-IDEXX Telemedicine Consultants, IDEXX Laboratories, Inc., Clackamas, Oregon, Ian D. Robertson, BVSc, DACVR, Clinical Professor, Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.