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Dentomaxillofacial Radiology, Vol 23, Issue 4 230-233, Copyright © 1994 by British Institute of Radiology

ARTICLES

Biostereometric measurement of oral tumour growth. Description of the technique and case report

P. A. Miller, C. H. Jooste, L. Adams, B. O'Sullivan and R. E. Wood
Department of Dentistry, Ontario Cancer Institute, Toronto, Canada.

Following radiotherapy, it may be difficult to determine clinically whether tumour regression, stabilization or growth has occurred. Traditional diagnostic imaging may not be possible due to the small size of the tumour and the proximity of metallic restorations. A case of squamous cell carcinoma of the mandibular alveolar process in which these problems arose is presented. A computer-assisted biostereometric technique was used to identify volumetric change of the tumour. Polyvinylsiloxane impressions were obtained to record the anatomy of the tumour site. From these, stone models were made at four and eight weeks following radiotherapy. Using optical mapping techniques, tumour growth was demonstrated which was not evident on follow-up examinations. The methodolgy of biostereometry is presented and its advantages and potential applications are discussed.




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Copyright © 1994 by the British Institute of Radiology.