FRACTAL DIMENSION FROM RADIOGRAPHS OF PERIDONTAL ALVEOLAR BONE - A POSSIBLE DIAGNOSTIC INDICATOR OF OSTEOPOROSIS

被引：164
作者：
RUTTIMANN, UE
WEBBER, RL
HAZELRIG, JB
机构：
[1] BOWMAN GRAY SCH MED,DEPT DENT,MED CTR BLVD,WINSTON SALEM,NC 27157
[2] BOWMAN GRAY SCH MED,DEPT RADIOL,WINSTON SALEM,NC 27157
[3] NIDR,DIAGNOST SYST BRANCH,BETHESDA,MD 20892
[4] UNIV ALABAMA,BIRMINGHAM,AL 35294
来源：
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS | 1992年 / 74卷 / 01期
关键词：
D O I：
10.1016/0030-4220(92)90222-C
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The purpose of this study was to investigate whether a radiographic estimate of osseous fractal dimension is useful in the characterization of structural changes in alveolar bone. Ten dry mandibular bone segments were radiographed from three controlled projection angles (-5, 0, +5 degrees), before and after acid-induced partial decalcification. Fractal dimension was estimated by regression analysis of power spectra computed by Fourier transform of selected regions of interest in digitized images of the radiographs. Repeated-measures ANOVA showed that fractal dimension so determined varied over anatomic locations (p < .01), but increased after acid-induced demineralization (p < .0005), irrespective of the radiographic projection angles (p > .99). In vivo fractal dimension was computed from randomly selected intraoral radiographs of six premenopausal (ages, 32.8 +/- 3.9) and six postmenopausal (ages, 62.5 +/- 4.1) women. A significantly (p < .01) higher fractal dimension was observed in the older group.
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页码：98 / 110
页数：13
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