DMFR
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dunn, S. M.
Right arrow Articles by van der Stelt, P. F.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Dunn, S. M.
Right arrow Articles by van der Stelt, P. F.

Dentomaxillofacial Radiology, Vol 21, Issue 3 142-147, Copyright © 1992 by British Institute of Radiology

ARTICLES

Recognizing invariant geometric structure in dental radiographs

S. M. Dunn and P. F. van der Stelt
New Jersey Dental School, Newark.

The dental radiograph is a non-invasive tool that is used to view internal structures for the diagnosis of caries, periapical lesions and periodontal disease. The requirement for a standardized image is most prominent in periodontal disease since the diagnosis is best done with a difference radiograph. The difficulty is that exact registration for subtraction requires exact reproduction of imaging geometry. A new model of imaging geometry, based on the correspondence of 3D structures, to describe the radiograph formation process is presented. The experimental results show that 3D measurements can be made in dental radiographs (P < 0.01) with up to 16-mm translation errors and angulation errors of up to 32 degrees.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
BJR DMFR IMAGING ALL BIR JOURNALS
Copyright © 1992 by the British Institute of Radiology.