title: Quantitative features of digitized radiographic bone profiles.
abstract: 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.
authors.affiliation: Department of Orthodontics, University of Iowa, Iowa City.
authors.forename: K A
authors.initials: KA
authors.lastname: Southard
authors.forename: T E
authors.initials: TE
authors.lastname: Southard
mesh_terms: 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