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Image analysis of endodontic radiographs: digital subtraction and quantitative densitometry
Author(s) -
Brstavik Dag,
Farrants George,
Wahl Trond,
Kerekes Kasmer
Publication year - 1990
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1990.tb00379.x
Subject(s) - subtraction , radiography , medicine , digital radiography , digital image , dentistry , digital imaging , artificial intelligence , orthodontics , computer science , computer vision , image processing , radiology , mathematics , image (mathematics) , arithmetic
In this study computerized image analysis procedures were applied to endodontic radiographs. Kontron IBAS 2000 is a commercially available image analysis system with processing routines applicable to radiograph digitizing and transformations. The system was evaluated for: its ability to harmonize blackening and contrast in endodontic radiographs; its ability to compensate for angulation distortion of sequential exposures of individual teeth; its potential for application of digital subtraction methods; and its use in automated gray‐level analyses of diseased and healthy bone areas in endodontic radiographs. The Kontron IBAS 2000 system proved suitable for all applications. However, the specificity of the subtraction procedure was limited by some inherent problems in the harmonization of blackening and in the subtraction process itself. On the other hand, automated gray level measurements proved to be a robust method for unbiased and quantitative assessment of healing of apical periodontitis.