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

被引：161

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.

引用

页码：98 / 110

页数：13

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