Comparison of two methods for measuring orientation

被引:49
作者
Geraets, WGM [1 ]
机构
[1] Acad Ctr Dent Amsterdam, Dept Oral Radiol, NL-1066 EA Amsterdam, Netherlands
关键词
bone structure; orientation measuring methods; automatic image processing;
D O I
10.1016/S8756-3282(98)00117-3
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
At the Department of Dental Radiology of ACTA, the line fraction deviation (LFD) method was developed to measure orientation on radiographic trabecular patterns. This article explains the measurement of the LFD index of orientation in a downscaled model. When investigations began to produce noteworthy results, the need for deeper understanding of the method and the resulting diagrams increased. Because it had previously been applied on rather complex patterns originating from bone it seemed worthwhile to study simpler images as well, which might yield a more intuitive understanding of the diagrams. Moreover, it seemed useful to compare the new LFD method with the well-accepted mean intercept length (MIL) method. Fifty images originating from cancellous bone structures and 25 drawings were analyzed. The results show that the MIL method tends to produce ellipses (not only on images originating from bone), and also that the LFD method is more sensitive to anisotropy. (C) 1998 by Elsevier Science Inc. All rights reserved.
引用
收藏
页码:383 / 388
页数:6
相关论文
共 24 条
[1]   TRABECULAR BONE REMODELING AROUND SMOOTH AND POROUS IMPLANTS IN AN EQUINE PATELLAR MODEL [J].
CHEAL, EJ ;
SNYDER, BD ;
NUNAMAKER, DM ;
HAYES, WC .
JOURNAL OF BIOMECHANICS, 1987, 20 (11-12) :1121-1134
[2]  
Chetverikov D., 1982, Proceedings of the 6th International Conference on Pattern Recognition, P1071
[3]  
CHETVERIKOV D, 1981, P 5 IEEE COMP SOC C, P583
[4]  
Cruz-Orive L.M., 1992, MICRON MICROSC ACTA, V23, P75, DOI DOI 10.1016/0739-6260(92)90076-P
[5]   PHYSICAL PROPERTIES OF TRABECULAR BONE [J].
GALANTE, J ;
ROSTOKER, W ;
RAY, RD .
CALCIFIED TISSUE RESEARCH, 1970, 5 (03) :236-&
[6]   The radiographic trabecular pattern of hips in patients with hip fractures and in elderly control subjects [J].
Geraets, WGM ;
Van der Stelt, PF ;
Lips, P ;
Van Ginkel, FC .
BONE, 1998, 22 (02) :165-173
[7]   Orientation of the trabecular pattern of the distal radius around the menopause [J].
Geraets, WGM ;
VanderStelt, PF ;
Lips, P ;
Elders, PJM ;
VanGinkel, FC ;
Burger, EH .
JOURNAL OF BIOMECHANICS, 1997, 30 (04) :363-370
[8]  
GERAETS WGM, 1994, THESIS VRIJE U AMSTE
[9]   THE RELATIONSHIP BETWEEN THE STRUCTURAL AND ORTHOGONAL COMPRESSIVE PROPERTIES OF TRABECULAR BONE [J].
GOULET, RW ;
GOLDSTEIN, SA ;
CIARELLI, MJ ;
KUHN, JL ;
BROWN, MB ;
FELDKAMP, LA .
JOURNAL OF BIOMECHANICS, 1994, 27 (04) :375-389
[10]   CHARACTERIZATION OF MICROSTRUCTURAL ANISOTROPY IN ORTHOTROPIC MATERIALS USING A 2ND RANK TENSOR [J].
HARRIGAN, TP ;
MANN, RW .
JOURNAL OF MATERIALS SCIENCE, 1984, 19 (03) :761-767