Download or read book Biomechanical Modeling of Soft Tissue and Facial Expressions for Craniofacial Surgery Planning written by Evgenij Gladilin and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomechanical modeling of soft tissue and facial expressions for craniofacial surgery planning written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soft Tissue Biomechanical Modeling for Computer Assisted Surgery written by Yohan Payan and published by Springer Science & Business Media. This book was released on 2012-04-27 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the biomechanical modeling of biological tissues in the context of Computer Assisted Surgery (CAS). More specifically, deformable soft tissues are addressed since they are the subject of the most recent developments in this field. The pioneering works on this CAS topic date from the 1980's, with applications in orthopaedics and biomechanical models of bones. More recently, however, biomechanical models of soft tissues have been proposed since most of the human body is made of soft organs that can be deformed by the surgical gesture. Such models are much more complicated to handle since the tissues can be subject to large deformations (non-linear geometrical framework) as well as complex stress/strain relationships (non-linear mechanical framework). Part 1 of the volume presents biomechanical models that have been developed in a CAS context and used during surgery. This is particularly new since most of the soft tissues models already proposed concern Computer Assisted Planning, with a pre-operative use of the models. Then, the volume addresses the two key issues raised for an intra-operative use of soft tissues models, namely (Part 2) “how to estimate the in vivo mechanical behavior of the tissues?” (i.e. what are the values of the mechanical parameters that can deliver realistic patient-specific behavior?) and (Part 3) “how to build a modeling platform that provides generic real-time (or at least interactive-time) numerical simulations?”
Download or read book Computer Assisted Planning in Craniofacial Surgery written by Amir H Dorafshar and published by Elsevier Health Sciences. This book was released on 2023-11-21 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in both scanning instruments and supporting software have made intraoperative 3D imaging a reality in today’s plastic and reconstructive surgery. Computer-Assisted Planning in Craniofacial Surgery provides authoritative, state-of-the-art information on when and how to apply technologies such as virtual planning, stereolithography, and navigation in the practice of craniofacial surgery. This unique, clinically focused title discusses the history and evolution of current techniques, extensively covers the application of current technologies, and includes multidisciplinary perspectives throughout, providing a comprehensive, holistic view of this important topic. Follows a standard format in each chapter: history of the topic, current literature and applications, key steps and techniques of virtual planning and navigation (with video), and pearls/pitfalls shared by a master surgeon with expertise in each particular area. Includes preoperative photographs and postoperative results, radiological and computerized imaging, and clinical photos throughout. Covers potential complications to be aware of in the postoperative period. Offers expert perspectives on computer-assisted planning from surgeons, physicists, engineers, and other industry leaders. Additional digital ancillary content may publish up to 6 weeks following the publication date.
Download or read book The Congruent Facelift written by Lawrence C. Y. Ho and published by Springer. This book was released on 2017-12-30 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a special form of facial rejuvenative surgery, which considers the three-dimensional anatomy of the face and benchmarks it against biomechanical models of the face. Traditional approaches to the ageing human face have been based on a two-dimensional approach. The authors, however, consider the human face using a three-dimensional platform that reflects height, width and depth and thus defines spatial divisions or pilasters. The anatomically accurate and bio-physically based three-dimensional computational models, originally used to simulate facial expressions and subsequently in the dynamic evaluation of the various soft tissues, offer a valuable new tool for surgical techniques. The book is divided into four chapters, the first of which describes the historical developments, evolution of facelift procedures and review of traditional two-dimensional approach. The second chapter presents three-dimensional surgical anatomy of the face and neck with the introduction of "facial pilasters". Treating the human face as a collection of compliant and rigid structural components which obey engineering principles and its biomechanical behaviour is discussed in chapter three. The last chapter provides the reader comprehensive information on the surgical procedure for contour vector congruent facelift, including case studies. An alternative approach (Rejuvenative Facial Lipomorphoplasty) to the de-volumed ageing face with little sagging and skin excess is introduced together with case studies. This book was motivated by the desire to define the key steps in facelift techniques and provides an essential guide for young plastic surgeons, as well as experienced surgeons who are dissatisfied with the current two-dimensional platform.
Download or read book A Computational Framework for Modelling the Biomechanics of Human Facial Expressions written by Tim Szu-Hsien Wu and published by . This book was released on 2014 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a computational framework for modelling the biomechanics of human facial expressions. The expressive motions are formed by intricate interactions of muscles and other soft tissues present in the face. In order to elucidate this complex mechanism, an anatomically realistic finite element (FE) model of the face was created from a set of highly detailed magnetic resonance imaging (MRI) data. A volume-preserving free-form deformation algorithm with 3-D surface data acquired from a structured-light scanner was used to transform the MRI-derived model from a supine position to an upright realistic setting. The biomechanics of the detailed facial model was characterised by the theories governing finite deformation elasticity and nonlinear contact mechanics. The elastic difference between the muscle and adipose tissues was accounted for by treating the tissue continuum as a heterogeneous medium and its mechanical behaviour was represented using a two-parameter Mooney-Rivlin constitutive model. In order to make the constitutive equations compatible to a mixed (displacement-pressure) FE formulation for incompressible bodies, a modified version of the Mooney-Rivlin model was implemented. Soft tissue de-formations were driven by the contraction of the underlying network of 3-D muscles with accurate depiction of their fibre orientations and mechanics. Frictionless unilateral and sliding contact constraints were imposed to model the interaction between the superficial soft tissue continuum and deep structures. The resulting system of nonlinear equations was solved numerically using the Netwon-Raphson method with a trust-region implementation. Visually realistic facial expressions and emotional gestures were simulated using the biomechanical model with suitable muscle activation levels. In order to achieve real-time performance for the expression prediction, a workflow based on statistical surrogate models was presented. Using the multivariate partial least squares regression model, it was demonstrated that the facial biomechanics can be emulated efficiently in real-time with reliable solutions. It was also demonstrated how these surrogate models can be implemented for the inverse problem, where the muscle activation patterns can be estimated from the experimentally determined facial expressions. Incorporating features at both the organ and tissue levels provided a framework for ac-curate and reliable prediction of facial biomechanics, as demonstrated in this thesis. Moreover, further acceleration can be achieved by emulating biomechanical behaviour using statistically-based surrogate models.
Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2010 written by Tianzi Jiang and published by Springer Science & Business Media. This book was released on 2010-09 with total page 751 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-volume set LNCS 6361, 6362 and 6363 constitutes the refereed proceedings of the 13th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2010, held in Beijing, China, in September 2010. Based on rigorous peer reviews, the program committee carefully selected 251 revised papers from 786 submissions for presentation in three volumes. The first volume includes 84 papers organized in topical sections on computer-aided diagnosis, planning and guidance of interventions, image segmentation, image reconstruction and restoration, functional and diffusion-weighted MRI, modeling and simulation, instrument and patient localization and tracking, quantitative image analysis, image registration, computational and interventional cardiology, and diffusion tensor MR imaging and analysis.
Download or read book 4th Kuala Lumpur International Conference on Biomedical Engineering 2008 written by Noor Azuan Abu Osman and published by Springer Science & Business Media. This book was released on 2008-07-30 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is with great pleasure that we present to you a collection of over 200 high quality technical papers from more than 10 countries that were presented at the Biomed 2008. The papers cover almost every aspect of Biomedical Engineering, from artificial intelligence to biomechanics, from medical informatics to tissue engineering. They also come from almost all parts of the globe, from America to Europe, from the Middle East to the Asia-Pacific. This set of papers presents to you the current research work being carried out in various disciplines of Biomedical En- neering, including new and innovative researches in emerging areas. As the organizers of Biomed 2008, we are very proud to be able to come-up with this publication. We owe the success to many individuals who worked very hard to achieve this: members of the Technical Committee, the Editors, and the Inter- tional Advisory Committee. We would like to take this opportunity to record our thanks and appreciation to each and every one of them. We are pretty sure that you will find many of the papers illuminating and useful for your own research and study. We hope that you will enjoy yourselves going through them as much as we had enjoyed compiling them into the proceedings. Assoc. Prof. Dr. Noor Azuan Abu Osman Chairperson, Organising Committee, Biomed 2008
Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2004 written by Christian Barillot and published by Springer. This book was released on 2011-04-05 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 7th International Conference on Medical Imaging and Computer Assisted Intervention, MICCAI 2004, was held in Saint-Malo, Brittany, France at the “Palais du Grand Large” conference center, September 26–29, 2004. The p- posaltohostMICCAI2004wasstronglyencouragedandsupportedbyIRISA, Rennes. IRISA is a publicly funded national research laboratory with a sta? of 370,including150full-timeresearchscientistsorteachingresearchscientistsand 115 postgraduate students. INRIA, the CNRS, and the University of Rennes 1 are all partners in this mixed research unit, and all three organizations were helpful in supporting MICCAI. MICCAI has become a premier international conference with in-depth - pers on the multidisciplinary ?elds of medical image computing, comput- assisted intervention and medical robotics. The conference brings together cl- icians, biological scientists, computer scientists, engineers, physicists and other researchers and o?ers them a forum to exchange ideas in these exciting and rapidly growing ?elds. The impact of MICCAI increases each year and the quality and quantity of submitted papers this year was very impressive. We received a record 516 full submissions (8 pages in length) and 101 short communications (2 pages) from 36 di?erent countries and 5 continents (see ?gures below). All submissions were reviewed by up to 4 external reviewers from the Scienti?c Review C- mittee and a primary reviewer from the Program Committee. All reviews were then considered by the MICCAI 2004 Program Committee, resulting in the acceptance of 235 full papers and 33 short communications.
Download or read book Craniofacial Surgery written by Kant Y. Lin and published by Saunders. This book was released on 2002 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Craniofacial Surgery offers a comprehensive update on most aspects of craniofacial surgery. It covers not only the latest surgical techniques for craniofacial anomalies, but also the basic science including genetics and molecular biology behind these anomalies. Most importantly, this resource features a multi-disciplinary approach, with experts in the areas of plastic surgery and neurosurgery collaborating to provide a more complete view of the management of patients with craniofacial anomalies. Features authors and contributors who are recognized leaders in their respective fields, with multiple experiences and viewpoints - providing the reader with both authoritative and comprehensive information Covers both time-tested and the latest innovative surgical techniques Basic science chapters emphasize and highlight: skull and facial development (embryology and morphogenesis), genetics of common anomalies, and the latest advances and techniques in molecular biology as they pertain to craniofacial anomalies Covers the fields of embryology, genetics, molecular biology, biomaterials, and biomechanics since advances in treatment are evolving from macroscopic manipulation to microscopic Clinical chapters emphasize and highlight: collaboration between multiple specialties (plastic surgery, neurosurgery, radiology) necessary for successful treatment and the latest technological advances and biomaterials used in craniofacial surgery, including bone substitutes, the latest fixation techniques, endoscopic surgery techniques and distraction osteogenesis techniques Features extensive illustrations of anomalies and techniques to aid in understanding concepts and treatments
Download or read book Patient Specific Modeling in Tomorrow s Medicine written by Amit Gefen and published by Springer Science & Business Media. This book was released on 2012-01-05 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the frontier of research and clinical applications of Patient Specific Modeling, and provides a state-of-the-art update as well as perspectives on future directions in this exciting field. The book is useful for medical physicists, biomedical engineers and other engineers who are interested in the science and technology aspects of Patient Specific Modeling, as well as for radiologists and other medical specialists who wish to be updated about the state of implementation.
Download or read book An Anatomically Accurate Biomechanical Model of the Human Face for Simulating Facial Expressions written by Alice Hung and published by . This book was released on 2012 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Facial animations are often generated using geometric techniques that disregard the underlying mechanics of facial structures. This thesis presents an anatomically accurate biomechanical model of the face for simulating facial expressions. The computational model uses highly accurate geometric descriptions of skin, facial muscles and the skull surface based on segmented data derived from the Visible Human cryosections published by the National US Library of Medicine. Experimental observations made using an ultrasound imaging system revealed that the superficial soft tissue layer of the face deforms as a single entity. The information acquired led to the creation of a single superficial layer of tissue continuum. Kinematical relations of the computational model were formulated using the theory of finite elasticity to predict large deformations of facial soft tissue structures. The equations governing mechanics of deformable bodies, the static Cauchy equation, and other auxiliary equations were numerically solved using the finite element method. The use of Hermite family elements in the finite element model ensures equilibrium conditions are naturally satisfied, thus more accurate solutions can be obtained. Accurate fibre orientations of facial muscles were derived from reconstructed 3D muscle models and embedded in the continuum. A novel grid based method was employed to determine the activation field of the continuum for simulating contraction of facial muscles. A frictionless contact constraint was imposed via a penalty method to prevent penetrations of facial soft tissues into the skull. An efficient customisation framework was also developed to streamline the processes for generating subject-specific models of facial structures. Furthermore, an investigation was undertaken to assess the suitability of using a coupled membrane-solid model for mechanical analyses of skin and subcutaneous tissues. Simulation results from the coupled model revealed that the assumptions made in membrane mechanics theory lead to significant errors in predicting tissue compressions. Facial expressions were successfully generated for a number of individuals using the optimal activation values inferred from experimental data followed by a validation study to assess the predictability of the model. The detailed biomechanical computational model presented in this thesis has a multitude of potential applications, ranging from facial animation in the entertainment industry to being a clinical tool in facial reconstructive procedures.
Download or read book Medical Simulation written by Dimitris Metaxas and published by Springer. This book was released on 2004-06-16 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the written contributions to the International Symposium on th Medical Simulation (ISMS’04) held in Cambridge, Massachusetts, USA on June 17 th and June 18 , 2004. Manuscripts are organized around five thematic sections relating to the multidisciplinary field of Medical Simulation: Soft Tissue Properties and Modeling, Haptic Rendering, Real-Time Deformable Models, Anatomical Modeling, and Development Frameworks. The objectives of the symposium are to gather researchers to present their most recent, and promising work, to highlight research trends and foster dialogue and debates among participants. Live demonstrations are also included at the meeting, but cannot be included in this volume. Finally, to address questions about areas for improvement and future directions of the field, we organized a panel of experts including technical, medical and educational representatives. This event continues the successful symposium organized by Hervé Delingette and Nicholas Ayache, in France in June 2003. At that meeting we agreed that it would be beneficial for the community to have an annual gathering for the medical simulation community where researchers can exchange ideas and share their work in this emerging field. ISMS’04 is co-organized by CIMIT / Harvard Medical School and Rutgers University.
Download or read book Perspective in Image guided Surgery written by Thorsten M. Buzug and published by World Scientific. This book was released on 2004 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Presents the latest in-depth engineering and mathematical studies - Gives an overview of recent research and clinical evaluation results - Contributions from international medical and engineering experts
Download or read book Medical Modelling written by Richard Bibb and published by Woodhead Publishing. This book was released on 2014-12-13 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical modelling and the principles of medical imaging, Computer Aided Design (CAD) and Rapid Prototyping (also known as Additive Manufacturing and 3D Printing) are important techniques relating to various disciplines - from biomaterials engineering to surgery. Building on the success of the first edition, Medical Modelling: The application of Advanced Design and Rapid Prototyping techniques in medicine provides readers with a revised edition of the original text, along with key information on innovative imaging techniques, Rapid Prototyping technologies and case studies.Following an overview of medical imaging for Rapid Prototyping, the book goes on to discuss working with medical scan data and techniques for Rapid Prototyping. In this second edition there is an extensive section of peer-reviewed case studies, describing the practical applications of advanced design technologies in surgical, prosthetic, orthotic, dental and research applications. Covers the steps towards rapid prototyping, from conception (modelling) to manufacture (manufacture) Includes a comprehensive case studies section on the practical application of computer-aided design (CAD) and rapid prototyping (RP) Provides an insight into medical imaging for rapid prototyping and working with medical scan data
Download or read book Furniture Design written by Jerzy Smardzewski and published by Springer. This book was released on 2015-06-18 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximizing reader insights into the principles of designing furniture as wooden structures, this book discusses issues related to the history of furniture structures, their classification and characteristics, ergonomic approaches to anthropometric requirements and safety of use. It presents key methods and highlights common errors in designing the characteristics of the materials, components, joints and structures, as well as looking at the challenges regarding developing associated design documentation. Including analysis of how designers may go about calculating the stiffness and endurance of parts, joints and whole structures, the book analyzes questions regarding the loss of furniture stability and the resulting threats to health of the user, putting forward a concept of furniture design as an engineering processes. Creating an attractive, functional, ergonomic and safe piece of furniture is not only the fruit of the work of individual architects and artists, but requires an effort of many people working in interdisciplinary teams, this book is designed to add important knowledge to the literature for engineer approaches in furniture design.
Download or read book Computational Models for the Human Body Special Volume written by Nicholas, Philippe Ayache and published by Gulf Professional Publishing. This book was released on 2004-07-16 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a better understanding of the physiological and mechanical behaviour of the human body and the design of tools for their realistic numerical simulations, including concrete examples of such computational models. This book covers a large range of methods and an illustrative set of applications.
