Evaluation of the plate-rod model assumption of trabecular bone
2012 (English)In: 9th IEEE International Symposium on Biomedical Imaging (ISBI), 2012, IEEE Press, 2012, 470-473 p.Conference paper (Refereed)
Trabecular bone has traditionally been assumed to be composed of plate- and rod-like trabeculae. This paper proposes a method to numerically evaluate the appropriateness of this assumption. In a first step, local constancy of thickness is estimated by comparing the maximum and mean diameter of the maximum inscribed balls centered at the medial axis/surface that includes every local point. In a second step, deviations from null curvature at the medial axis/surface are locally measured by comparing the geodesic and Euclidean distances from a point to its neighbors in the medial axis/surface. Finally, these two measurements are combined in order to locally estimate the compliance of the dataset with the plate-rod model assumption. Experiments on synthetic datasets show that the proposed measurements can be used to decide the compliance of a 3D shape with the plate-rod model. Results on micro computed tomography images show that the plate-rod model is more valid for a vertebra than for a radius. Thus, especially for the radius, measurements based on this model should be complemented with the proposed measurements.
Place, publisher, year, edition, pages
IEEE Press, 2012. 470-473 p.
, IEEE International Symposium on Biomedical Imaging, ISSN 1945-7928
Biological system modeling, Biomedical measurements, Trabecular bone, Computational modeling, Computed tomography, Shape, Shape measurement
Medical Image Processing
IdentifiersURN: urn:nbn:se:liu:diva-79480DOI: 10.1109/ISBI.2012.6235586ISI: 000312384100118ISBN: 978-1-4577-1857-1 (print)OAI: oai:DiVA.org:liu-79480DiVA: diva2:542786
9th IEEE International Symposium on Biomedical Imaging (ISBI 2012), 2-5 May 2012, Barcelona, Spain