Quantitative features of digitized radiographic bone profiles.
The purpose of this investigation was to examine the use of four image features in describing digitized radiographic bony scan lines, or profiles. These features include the mean pixel intensity, I (x); pixel intensity variance, var I (x); mean absolute Fourier transform coefficient, magnitude of F(u); and mean spatial first moment of the absolute Fourier coefficients, M1. In an animal model I (x) and M1 differed significantly while magnitude of F(u) tended to differ significantly between digitized radiographic profiles of osteoporotic (n = 6) and control (n = 6) rabbit humeri. Case examples illustrating the application of this technique to digitized radiographs of human interproximal alveolar bone are presented.
Southard
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Department of Orthodontics, University of Iowa, Iowa City.
Southard
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D000328:Adult; D000368:Aged; D000539:Alveolar Process / Q000000981:diagnostic imaging; D000818:Animals; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D006811:Humerus / Q000000981:diagnostic imaging; D007091:Image Processing, Computer-Assisted; D008437:Maxilla / Q000000981:diagnostic imaging; D010024:Osteoporosis / Q000000981:diagnostic imaging*; D010363:Pattern Recognition, Automated; D010486:Periapical Tissue / Q000000981:diagnostic imaging; D011817:Rabbits; D011856:Radiographic Image Enhancement; D012815:Signal Processing, Computer-Assisted