Download or read book High resolution Finite Element Analysis of Trabecular Bone written by Oscar T. Chavez and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Image Analysis for Trabecular Bone Properties on Cone Beam CT Data written by Eva Klintström and published by Linköping University Electronic Press. This book was released on 2017-10-20 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trabecular bone structure as well as bone mineral density (BMD) have impact on the biomechanical competence of bone. In osteoporosis-related fractures, there have been shown to exist disconnections in the trabecular network as well as low bone mineral density. Imaging of bone parameters is therefore of importance in detecting osteoporosis. One available imaging device is cone-beam computed tomography (CBCT). This device is often used in pre-operative imaging of dental implants, for which the trabecular network also has great importance. Fourteen or 15 trabecular bone specimens from the radius were imaged for conducting this in vitro project. The imaging data from one dual-energy X-ray absorptiometry (DXA), two multi-slice computed tomography (MSCT), one high-resolution peripheral quantitative computed tomography (HR-pQCT) and four CBCT devices were segmented using an in-house developed code based on homogeneity thresholding. Seven trabecular microarchitecture parameters, as well as two trabecular bone stiffness parameters, were computed from the segmented data. Measurements from micro-computed tomography (micro-CT) data of the same bone specimens were regarded as gold standard. Correlations between MSCT and micro-CT data showed great variations, depending on device, imaging parameters and between the bone parameters. Only the bone-volume fraction (BV/TV) parameter was stable with strong correlations. Regarding both HR-pQCT and CBCT, the correlations to micro-CT were strong for bone structure parameters as well as bone stiffness parameters. The CBCT device 3D Accuitomo showed the strongest correlations, but overestimated BV/TV more than three times compared to micro-CT. The imaging protocol most often used in clinical imaging practice at our clinic demonstrated strong correlations as well as low radiation dose. CBCT data of trabecular bone can be used for analysing trabecular bone properties, like bone microstructure and bone biomechanics, showing strong correlations to the reference method of micro-CT. The results depend on choice of CBCT device as well as segmentation method used. The in-house developed code based on homogeneity thresholding is appropriate for CBCT data. The overestimations of BV/TV must be considered when estimating bone properties in future clinical dental implant and osteoporosis research.
Download or read book Finite Element Modeling of Trabecular Bone from Multi row Detector CT Imaging written by Cheng Chen and published by . This book was released on 2014 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The finite element method (FEM) has been widely applied to various medical imaging applications over the past two decades. The remarkable progress in high-resolution imaging techniques has allowed FEM to draw great research interests in computing trabecular bone (TB) stiffness from three-dimensional volumetric imaging. However, only a few results are available in literature on applying FEM to multi-row detector CT (MDCT) imaging due to the challenges posed by limited spatial resolution. The research presented here develops new methods to preserve TB structure connectivity and to generate high-quality mesh representation for FEM from relatively low resolution images available at MDCT imaging. Specifically, it introduced a space-variant hysteresis algorithm to threshold local trabecular structure that preserves structure connectivity. Also, mesh generation algorithms was applied to represent TB micro-architecture and mesh quality was compared with that generated by traditional methods. TB stiffness was computed using FEM simulation on micro-CT (μ-CT) and MDCT images of twenty two cadaveric specimens of distal tibia. Actual stiffness of those specimens were experimentally determined by mechanical testing and its correlation with computed stiffness was analyzed. The observed values of linear correlation (r 2 ) between actual bone stiffness and computed stiffness from μ-CT and MDCT imaging were 0.95 and 0.88, respectively. Also, reproducibility of the FEM-based computed bone stiffness was determined from repeat MDCT scans of cadaveric specimens and the observed intra-class correlation coefficient was a high value of 0.98. Experimental results demonstrate the feasibility of application of FEM with high sensitivity and reproducibility on MDCT imaging of TB at distal tibia under in vivo condition.
Download or read book Finite Element Modeling for a Morphometric and Mechanical Characterization of Trabecular Bone from High Resolution Magnetic Resonance Imaging written by Angel Alberich-Bayarri and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite Element Modeling for a Morphometric and Mechanical Characterization of Trabecular Bone from High Resolution Magnetic Resonance Imaging.
Download or read book Micromechanical Modeling of Failure in Trabecular Bone written by Grant Richard Bevill and published by . This book was released on 2008 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cancellous Bone written by Ardiyansyah Syahrom and published by Springer. This book was released on 2017-08-05 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive mechanobiological insights into bone, including the microstructure of cancellous bone and its realistic loading in the human body. This approach considers different types of loads, i.e. static and dynamic, and the response under uniaxial and multiaxial loading conditions. The book also reviews additional factors influencing biomechanical properties, e.g. fluid transport. In closing, the mechanobiological approach is discussed in the context of the finite element method.
Download or read book Noninvasive Assessment of Trabecular Bone Architecture and The Competence of Bone written by Sharmila Majumdar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of bone microarchitecture is flourishing because of a recent shift in perspective that has taken researchers beyond utilizing bone mineral density as the primary source of information about certain matters related to bone. In the area of osteoporosis and skeletal changes, bone mineral density (BMD) is widely used for screening, monitoring and assessing therapeutic efficacy, and yet, it is currently accepted that BMD does not fully explain the pathogenesis of osteoporosis, the process of aging, nor mechanisms of therapeutic efficacy. In this context, the study of trabecular microarchitecture has much to contribute. The emerging field of trabecular microarchitecture, however, is diverse, inter-disciplinary and encompasses many different imaging modalities. This volume represents a compilation of papers from world-renowned researchers, reflecting the most current research in the area of noninvasive assessment of trabecular microcarchitecture. This varied research applies sophisticated imaging tools to questions of bone biomechanics at both the basic science and clinical levels. The authors' works range from review articles and research articles to works in progress. Taken together, they offer a foray into the "state of the art" of investigating bone at its most basic levels.
Download or read book Convergence Behavior of High resolution Finite Element Models of Trabecular Bone written by Andy Chuan-chih Hsia and published by . This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Analysis of Porcine Trabecular Bone Based on Micro CT Images written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Dependence on Anatomic Site of Trabecular Bone Structure function Relationships written by Elise Feng-I. Morgan and published by . This book was released on 2002 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiaxial Strength and Micromechanics of Human Bone written by Harun Halil Bayraktar and published by . This book was released on 2003 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Method and Medical Imaging Techniques in Bone Biomechanics written by Rabeb Ben Kahla and published by John Wiley & Sons. This book was released on 2020-01-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital models based on data from medical images have recently become widespread in the field of biomechanics. This book summarizes medical imaging techniques and processing procedures, both of which are necessary for creating bone models with finite element methods. Chapter 1 introduces the main principles and the application of the most commonly used medical imaging techniques. Chapter 2 describes the major methods and steps of medical image analysis and processing. Chapter 3 presents a brief review of recent studies on reconstructed finite element bone models, based on medical images. Finally, Chapter 4 reveals the digital results obtained for the main bone sites that have been targeted by finite element modeling in recent years.
Download or read book A Computational Investigation of Multiaxial Failure in Trabecular Bone written by Glen Lawrence Niebur and published by . This book was released on 2000 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi axial Fatigue of Trabecular Bone with Respect to Normal Walking written by Mohammad Mostakhdemin and published by Springer. This book was released on 2015-06-10 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the analysis and treatment of osteoporotic bone based on drug administration, tracking fatigue behavior and taking into consideration the mechanical interaction of implants with trabecular bone. Weak trabeculae are one of the most important clinical features that need to be addressed in order to prevent hip joint fractures.
Download or read book Advanced Imaging in Biology and Medicine written by Ch.W. Sensen and published by Springer Science & Business Media. This book was released on 2008-12-03 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: A picture says more than a thousand words. This is something that we all know to be true. Imaging has been important since the early days of medicine and bi- ogy, as seen in the anatomical studies of Leonardo Da Vinci or Andreas Vesalius. More than 100 years ago, the ?rst noninvasive imaging technologies, such as K- rad Roentgen’s X-ray technology,were applied to the medical ?eld—and while still crude—revolutionized medical diagnosis. Today, every patient will be exposed to some kind of advanced imaging technology such as medical resonance imaging, computed tomography or four-dimensional ultrasound during their lifetime. Many diseases, such as brain tumors, are initially diagnosed solely by imaging, and most of the surgical planning relies on the patient imagery. 4D ultrasound is available to expecting parents who wish to create unique early memories of the new baby, and it may soon be used for the morphometric diagnosis of malformations that may one day be treatable—inutero! Light and electron microscopy are unequal brethren, which have contributed to most of our knowledge about the existence and organization of cells, tissues and microorganisms. Every student of biology or medicine is introduced to the fascinating images of the microcosm. New advances have converted these im- ing technologies, which were considered by many to be antiquated, into powerful tools for research in systems biology and related ?elds.
Download or read book Double Experimental Procedure for Model Specific Finite Element Analysis of the Human Femur and Trabecular Bone written by Eduardo Grande García and published by . This book was released on 2013 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two dimensional Finite Element Analysis of the Remodelling of Trabecular Bone Around a Rigid Porous Implant written by Robert Andrew Leuzinger and published by . This book was released on 1984 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
