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Analysis of trabecular bone structure in the distal radius using high-resolution MRI

The objective of this study was to develop high-resolution in vivo Magnetic resonance techniques to resolve the structure of trabecular bone in conjunction with image processing techniques to quantify variations in trabecular bone structure. Such techniques could then potentially be applied to asses... Full description

Main Author: Majumdar, S.
Contributors: Genant, K. | Author
Grampp, S. | Author
Jergas, D. | Author
Newitt, C. | Author
Gies, A. | Author
Contained in: European Radiology Berlin : Springer Vol. 4, No. 6 (1994), p. 517-524
Journal Title: European Radiology
Fulltext access:
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Links: Volltext (dx.doi.org)
ISSN: 1432-1084
Additional Keywords: Fractal analysis
Fractal dimension
MR 1
OriginalPaper
Osteoporosis
Trabecular structure
DOI: 10.1007/BF00226822
Language: English
Physical Description: Online-Ressource
ID (e.g. DOI, URN): 10.1007/BF00226822
BF00226822
PPN (Catalogue-ID): SPR013655280
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Internes Format
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245 1 0 |a Analysis of trabecular bone structure in the distal radius using high-resolution MRI  |h Elektronische Ressource 
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520 |a The objective of this study was to develop high-resolution in vivo Magnetic resonance techniques to resolve the structure of trabecular bone in conjunction with image processing techniques to quantify variations in trabecular bone structure. Such techniques could then potentially be applied to assess osteoporotic changes and predict the risk fractures. Axial and coronal volumetric MRI images of the distal radius were obtained using a modified gradient echo sequence on a MRI images, on a 1.5 T imager at a spatial resolution of 150 μm and a slice thickness of 0.7 mm. Image thresholding techniques were used to identify trabecular bone and bone marrow: thereafter the area occupied by trabecular bone, mean trabecular width and mean intercept length as a function of angle were computed. An automatic boundary tracking algorithm was used to identify the bone and marrow interface. Fractal analysis was used to quantify the convolutedness of the marrow-trabecular bone interface. It is well known that the trabecular bone density is the greater at distal sites of the radius and decreases proximally. These variations were reflected by the decreases in the trabecular width. fractional area and fractal dimension. Over a 28 mm range, starting at 7 mm proximal from the joint line and extending 35 mm proximal to the joint line, the mean trabecular width decreased from 444.6 μm to 341.0, μm the fractional area of trabecular bone decreased from 0.44 to 0.15. and the fractal dimension decreased from 1.67 to 1.10. The choice of the threshold affected the quantification of the mean trabecular width and fractional trabecular bone area measurements, but the fractal dimension was more robust. High-resolution MRI images combined with image analysis techniques can he used to quantify structural variations in trabecular bone in the distal radius. 
653 |a OriginalPaper 
653 |a Fractal analysis 
653 |a Fractal dimension 
653 |a MR 1 
653 |a Osteoporosis 
653 |a Trabecular structure 
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700 1 |a Grampp, S.  |e verfasserin  |4 aut 
700 1 |a Jergas, D.  |e verfasserin  |4 aut 
700 1 |a Newitt, C.  |e verfasserin  |4 aut 
700 1 |a Gies, A.  |e verfasserin  |4 aut 
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