Modificarea texturii trabeculare la populatia feminina varstnica, evidentiata prin analiza fractala pe radiografia calcaneului

I. Stefan, C. Vertan, Herbert Jelinek, R. Badea

Research output: Contribution to journalArticle

Abstract

Cancellous bone texture of the calcaneus in elderly women measured by fractal analysis on radigraphsCancellous bone texture was studied on calcaneus's radiographs from women in order to identify trabecular micro-architecturechanges attributable to advanced age, compared to the peri- and postmenopausal period. Two sets of 12 X-rays, digitalized with adigital camera, were compared using multifractal analysis on binarized images and 4 different fractal dimensions (FD) computed on greyscale images. The results were subjected to ROC (Receiver Operating Characteristic) analysis, by measuring AUC (AreaUnder the Curve). Classification of the X-rays was attempted, using k-nn (k-nearest neighbour) supervised classification algorithms.Statistically significant lower values of FD, were found with both methods for the advanced age group. Fractal analysis applied to greyscale images and ROC analysis proved more successful in identifying the X-rays.
Original languageEnglish
Pages (from-to)203-207
Number of pages5
JournalRomanian Journal of Rheumatology / Revista română de reumatologie
Volume17
Issue number4
Publication statusPublished - 2008

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Fractal dimension
X rays
Fractals
Bone
Textures
Cameras

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title = "Modificarea texturii trabeculare la populatia feminina varstnica, evidentiata prin analiza fractala pe radiografia calcaneului",
abstract = "Cancellous bone texture of the calcaneus in elderly women measured by fractal analysis on radigraphsCancellous bone texture was studied on calcaneus's radiographs from women in order to identify trabecular micro-architecturechanges attributable to advanced age, compared to the peri- and postmenopausal period. Two sets of 12 X-rays, digitalized with adigital camera, were compared using multifractal analysis on binarized images and 4 different fractal dimensions (FD) computed on greyscale images. The results were subjected to ROC (Receiver Operating Characteristic) analysis, by measuring AUC (AreaUnder the Curve). Classification of the X-rays was attempted, using k-nn (k-nearest neighbour) supervised classification algorithms.Statistically significant lower values of FD, were found with both methods for the advanced age group. Fractal analysis applied to greyscale images and ROC analysis proved more successful in identifying the X-rays.",
keywords = "Calcaneus's radiograph, Fractal analysis, S radiograph, fractal analysis, Senile osteoporosis",
author = "I. Stefan and C. Vertan and Herbert Jelinek and R. Badea",
note = "Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Romanian Journal of Rheumatology / Revista Rom{\~A}¢na de REUMATOLOGIE. ISSNs: 1843-0791;",
year = "2008",
language = "English",
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journal = "Romanian Journal of Rheumatology / Revista română de reumatologie",
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T1 - Modificarea texturii trabeculare la populatia feminina varstnica, evidentiata prin analiza fractala pe radiografia calcaneului

AU - Stefan, I.

AU - Vertan, C.

AU - Jelinek, Herbert

AU - Badea, R.

N1 - Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Romanian Journal of Rheumatology / Revista Româna de REUMATOLOGIE. ISSNs: 1843-0791;

PY - 2008

Y1 - 2008

N2 - Cancellous bone texture of the calcaneus in elderly women measured by fractal analysis on radigraphsCancellous bone texture was studied on calcaneus's radiographs from women in order to identify trabecular micro-architecturechanges attributable to advanced age, compared to the peri- and postmenopausal period. Two sets of 12 X-rays, digitalized with adigital camera, were compared using multifractal analysis on binarized images and 4 different fractal dimensions (FD) computed on greyscale images. The results were subjected to ROC (Receiver Operating Characteristic) analysis, by measuring AUC (AreaUnder the Curve). Classification of the X-rays was attempted, using k-nn (k-nearest neighbour) supervised classification algorithms.Statistically significant lower values of FD, were found with both methods for the advanced age group. Fractal analysis applied to greyscale images and ROC analysis proved more successful in identifying the X-rays.

AB - Cancellous bone texture of the calcaneus in elderly women measured by fractal analysis on radigraphsCancellous bone texture was studied on calcaneus's radiographs from women in order to identify trabecular micro-architecturechanges attributable to advanced age, compared to the peri- and postmenopausal period. Two sets of 12 X-rays, digitalized with adigital camera, were compared using multifractal analysis on binarized images and 4 different fractal dimensions (FD) computed on greyscale images. The results were subjected to ROC (Receiver Operating Characteristic) analysis, by measuring AUC (AreaUnder the Curve). Classification of the X-rays was attempted, using k-nn (k-nearest neighbour) supervised classification algorithms.Statistically significant lower values of FD, were found with both methods for the advanced age group. Fractal analysis applied to greyscale images and ROC analysis proved more successful in identifying the X-rays.

KW - Calcaneus's radiograph

KW - Fractal analysis

KW - S radiograph, fractal analysis

KW - Senile osteoporosis

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JO - Romanian Journal of Rheumatology / Revista română de reumatologie

JF - Romanian Journal of Rheumatology / Revista română de reumatologie

SN - 1843-0791

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ER -