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Dentomaxillofacial Radiology, Vol 26, Issue 1 67-69, Copyright © 1997 by British Institute of Radiology

ARTICLES

Can dentists recognize manipulated digital radiographs?

H. Visser and W. Kruger
Department of Periodontology, Dental School, Georg-August-University Gottingen, Germany.

OBJECTIVES: To determine the ability of dentists to recognize digitally manipulated radiographs. METHODS: A poster was presented at the Annual Meeting of the German Society for Periodontology displaying the intra-oral radiographs of 12 different patients. Half of the radiographs were subjected to digital manipulation to add or remove specific features. Dentists were asked to identify these radiographs by means of a questionnaire. RESULTS: Thirty-nine dentists submitted usable questionnaires. Statistical evaluation revealed a distribution of hits similar to the random distribution. None of the dentists detected all the six manipulated radiographs; three dentists had five correct, but there were five with only one. An authentic radiograph scored highest as a manipulation. CONCLUSIONS: Image manipulations which alter the diagnostic content of a radiograph are unlikely to be detected by dentists. Digital radiography requires additional measures for data protection.




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Copyright © 1997 by the British Institute of Radiology.