Evelyn M. Thomson, BSDH, MS, is an adjunct assistant professor
at the Gene W. Hirschfeld School of Dental Hygiene, Old Dominion University in Norfolk, Va. She is the author and co-author of three textbooks: Essentials of Dental Radiography, Exercises in Oral Radiography Technique, and Case Studies in Dental Hygiene. Thomson is also a member of the American Academy of Oral and Maxillofacial Radiology.