DEVELOPMENT OF AUTOMATED REGISTRATION ALGORITHMS FOR SUBTRACTION RADIOGRAPHY

Citation
Gj. Ettinger et al., DEVELOPMENT OF AUTOMATED REGISTRATION ALGORITHMS FOR SUBTRACTION RADIOGRAPHY, Journal of clinical periodontology, 21(8), 1994, pp. 540-543
Citations number
13
Categorie Soggetti
Dentistry,Oral Surgery & Medicine
ISSN journal
03036979
Volume
21
Issue
8
Year of publication
1994
Pages
540 - 543
Database
ISI
SICI code
0303-6979(1994)21:8<540:DOARAF>2.0.ZU;2-B
Abstract
An algorithm is described which provides necessary information for aut omated registration and computation of alveolar height for subtraction radiographic analysis. This procedure involves identification of the cemento-enamel junctions from radiographic images by incrementally com paring a characteristic image signature along computed tooth boundarie s. The identification of these anatomically invariant structures provi des information necessary to warp images and create automatic superimp osition, correcting for geometric misalignment. The present report des cribes and demonstrates the feasibility of utilizing automated CEJ, ed ge finding and image warping algorithms to align automatically sequent ial radiographs and permit their subtraction.