Segmentation of bone CT images and assessment of bone structure using measures of complexity

Autor: Peter Saparin, Jesper Skovhus Thomsen, Jürgen Kurths, Gisela Beller, Wolfgang Gowin

Publikováno v: Medical Physics. 33:3857-3873

A nondestructive and noninvasive method for numeric characterization (quantification) of the structural composition of human bone tissue has been developed and tested. In order to quantify and to compare the structural composition of bones from 2D co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5db8a542fd8e8943cafa025893eb36c
https://doi.org/10.1118/1.2336501

Stereological measures of trabecular bone structure: comparison of 3D micro computed tomography with 2D histological sections in human proximal tibial bone biopsies

Autor: Wolfgang Gowin, Jasper Thomsen, Steffen Prohaska, Andreas Laib, Bruno Koller, Lis Mosekilde

Publikováno v: Thomsen, J S, Laib, A, Koller, B, Prohaska, S, Mosekilde, L & Gowin, W 2005, ' Stereological measures of trabecular bone structure: comparison of 3D micro computed tomography with 2D histological sections in human proximal tibial bone biopsies ', Journal of Microscopy, vol. 218, no. 2, pp. 171-179 .
Aarhus University

Stereology applied on histological sections is the 'gold standard' for obtaining quantitative information on cancellous bone structure. Recent advances in micro computed tomography (microCT) have made it possible to acquire three-dimensional (3D) dat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f3dd52944ac646dcc8ab0304c66db01
https://doi.org/10.1111/j.1365-2818.2005.01469.x

Cancellous bone structure of iliac crest biopsies following 370 days of head-down bed rest

Autor: Jesper Skovhus Thomsen, Morukov, Boris V., Laurence Vico, Christian Alexandre, Saparin, Peter I., Wolfgang Gowin

Publikováno v: Thomsen, J S, Morukov, B V, Vico, L, Alexandre, C, Saparin, P I & Gowin, W 2005, ' Cancellous bone structure of iliac crest biopsies following 370 days of head-down bed rest ', Aviation, Space, and Environmental Medicine, vol. 76, no. 10, pp. 915-922 .
Aarhus University

INTRODUCTION: Static bone histomorphometry was applied to existing iliac bone sections originating from a 370-d 5 degrees head-down bed rest experiment. This bed rest experiment is the longest ever to have been conducted. We hypothesized that bed res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::734a761e8418e1e9abb845ffd75b2cb4
https://pure.au.dk/portal/da/publications/cancellous-bone-structure-of-iliac-crest-biopsies-following-370-days-of-headdown-bed-rest(4ee75e10-a840-11da-bee9-02004c4f4f50).html

Comparison of bone loss with changes of bone architecture at six different skeletal sites using measures of complexity

Autor: Peter, Saparin, Wolfgang, Gowin, Dieter, Felsenberg

Publikováno v: Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology. 9(1)

We explore the structural deterioration of human bone tissue in osteoporosis as a model for bone loss in microgravity conditions. Measures of complexity are applied to quantify the structural composition of bone tissue at six different skeletal locat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::80cfd74ebb2c4da92552df205aecef5e
https://pubmed.ncbi.nlm.nih.gov/15002537

Bones And Nonlinear Dynamics — The Quantification Of Architecture

Autor: Peter Saparin, Jürgen Kurths, Wolfgang Gowin, Dieter Felsenberg

Publikováno v: AIP Conference Proceedings.

In order to quantify the internal architecture of a bone in a holistic manner based on radiological images, the methodology of nonlinear dynamics was applied. Image processing algorithms, an expansion of symbolic dynamics, and five measures of comple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8aa2ba6a2360cf9ea2373635af364d71
https://doi.org/10.1063/1.1487526