Merrill's atlas of radiographic positioning & procedures / Bruce W. Long, MS, RT(R)(CV), FASRT, FAEIRS, Director and Associate Professor, Radiologic Imaging and Sciences Programs, Indiana University School of Medicine, Indianapolis, Indiana ; Jeannean Hall Rollins, MRC, BSRT(R)(CV), Associate Professor, Medical Imaging and Radiation Sciences Department, Arkansas State University, Jonesboro, Arkansas ; Barbara J. Smith, MS, RT(R)(QM), FASRT, FAEIRS, Instructor, Radiologic Technology, Medical Imaging Department, Portland Community College, Portland, Oregon