Nonlinear Elasticity Imaging Using Ultrasound
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Nonlinear Elasticity Imaging Using Ultrasound
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Author : Ramon Q. Erkamp
language : en
Publisher:
Release Date : 2003
Nonlinear Elasticity Imaging Using Ultrasound written by Ramon Q. Erkamp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Nonlinear Elasticity Imaging Using The Adjoint Method
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Author : Nachiket Hemant Gokhale
language : en
Publisher:
Release Date : 2007
Nonlinear Elasticity Imaging Using The Adjoint Method written by Nachiket Hemant Gokhale and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Abstract: It is well known that the mechanical properties of soft tissue can change with tissue pathology. For example, it is observed that the elastic (shear) modulus of malignant breast masses is typically an order of magnitude higher than the back ground of normal glandular tissue. In addition it is also known that with increasing applied strain the stiffness of cancerous soft tissues increases more rapidly than the background of non-malignant soft tissues. Medical imaging techniques such as ultrasound imaging, combined with novel displacement estimation techniques enable the calculation of the displacement field in the interior of soft tissue. While many attempts have been made to use this information to map the linear elastic properties of soft tissue, relatively few attempts have been made that account for both large deformation and material non-linearity in reconstructing the elastic properties. In this dissertation, new algorithms are developed, implemented, and tested to reconstruct the material parameters in non-linear, large deformation hyperelastic tissue models. The overall computational problem is formulated as a constrained minimization problem where the difference between a measured and a predicted displacement field is minimized. Upon discretization, the constraint takes the form of a finite element (FEN) model for the hyperelastic tissue response. In the forward FEM model, due consideration is given to issues of mesh locking which are avoided by the use of enhanced strain and higher order finite elements. The optimization problem is solved efficiently using a quasi-Newton method and adjoint gradient calculation, which significantly reduces the computational costs compared to more traditional approaches. A novel technique based on continuation in the material properties is used to further accelerate the inverse problem solution.
Ultrasound Elastography For Biomedical Applications And Medicine
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Author : Ivan Z. Nenadic
language : en
Publisher: John Wiley & Sons
Release Date : 2019-01-22
Ultrasound Elastography For Biomedical Applications And Medicine written by Ivan Z. Nenadic and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-22 with Technology & Engineering categories.
Ultrasound Elastography for Biomedical Applications and Medicine Ivan Z. Nenadic, Matthew W. Urban, James F. Greenleaf, Mayo Clinic Ultrasound Research Laboratory, Mayo Clinic College of Medicine, USA Jean-Luc Gennisson, Miguel Bernal, Mickael Tanter, Institut Langevin – Ondes et Images, ESPCI ParisTech CNRS, France Covers all major developments and techniques of Ultrasound Elastography and biomedical applications The field of ultrasound elastography has developed various techniques with the potential to diagnose and track the progression of diseases such as breast and thyroid cancer, liver and kidney fibrosis, congestive heart failure, and atherosclerosis. Having emerged in the last decade, ultrasound elastography is a medical imaging modality that can noninvasively measure and map the elastic and viscous properties of soft tissues. Ultrasound Elastography for Biomedical Applications and Medicine covers the basic physics of ultrasound wave propagation and the interaction of ultrasound with various media. The book introduces tissue elastography, covers the history of the field, details the various methods that have been developed by research groups across the world, and describes its novel applications, particularly in shear wave elastography. Key features: Covers all major developments and techniques of ultrasound elastography and biomedical applications. Contributions from the pioneers of the field secure the most complete coverage of ultrasound elastography available. The book is essential reading for researchers and engineers working in ultrasound and elastography, as well as biomedical engineering students and those working in the field of biomechanics.
2d And 3d Elasticity Imaging Using Freehand Ultrasound
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Author : Joel Edward Lindop
language : en
Publisher:
Release Date : 2008
2d And 3d Elasticity Imaging Using Freehand Ultrasound written by Joel Edward Lindop and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Diagnostic Ultrasound Imaging Inside Out
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Author : Thomas L. Szabo
language : en
Publisher: Academic Press
Release Date : 2013-12-05
Diagnostic Ultrasound Imaging Inside Out written by Thomas L. Szabo and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-05 with Science categories.
Diagnostic Ultrasound Imaging provides a unified description of the physical principles of ultrasound imaging, signal processing, systems and measurements. This comprehensive reference is a core resource for both graduate students and engineers in medical ultrasound research and design. With continuing rapid technological development of ultrasound in medical diagnosis, it is a critical subject for biomedical engineers, clinical and healthcare engineers and practitioners, medical physicists, and related professionals in the fields of signal and image processing. The book contains 17 new and updated chapters covering the fundamentals and latest advances in the area, and includes four appendices, 450 figures (60 available in color on the companion website), and almost 1,500 references. In addition to the continual influx of readers entering the field of ultrasound worldwide who need the broad grounding in the core technologies of ultrasound, this book provides those already working in these areas with clear and comprehensive expositions of these key new topics as well as introductions to state-of-the-art innovations in this field. Enables practicing engineers, students and clinical professionals to understand the essential physics and signal processing techniques behind modern imaging systems as well as introducing the latest developments that will shape medical ultrasound in the future Suitable for both newcomers and experienced readers, the practical, progressively organized applied approach is supported by hands-on MATLAB® code and worked examples that enable readers to understand the principles underlying diagnostic and therapeutic ultrasound Covers the new important developments in the use of medical ultrasound: elastography and high-intensity therapeutic ultrasound. Many new developments are comprehensively reviewed and explained, including aberration correction, acoustic measurements, acoustic radiation force imaging, alternate imaging architectures, bioeffects: diagnostic to therapeutic, Fourier transform imaging, multimode imaging, plane wave compounding, research platforms, synthetic aperture, vector Doppler, transient shear wave elastography, ultrafast imaging and Doppler, functional ultrasound and viscoelastic models
Measurement Of Soft Tissue Elasticity In Vivo
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Author : Yan-Ping Huang
language : en
Publisher: CRC Press
Release Date : 2015-11-04
Measurement Of Soft Tissue Elasticity In Vivo written by Yan-Ping Huang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-04 with Medical categories.
The product of 20 years of research, this book covers topics in soft tissue elasticity in vivo, from measurement techniques to clinical applications. It provides, for the first time, a single source that systematically introduces the various techniques for in vivo measurement of soft tissue elasticity in an effort to ease the difficulty between lea
Ultrasonic Motion Tracking For Large Multi Step Deformations
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Author :
language : en
Publisher:
Release Date : 2013
Ultrasonic Motion Tracking For Large Multi Step Deformations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Ultrasound elasticity imaging is a family of imaging modalities that uses tissue motion, tracked by ultrasound, to measure the elastic properties of tissue. One such property is the elastic nonlinearity, which quantifies the rate at which tissue gets stiffer as it is deformed. This nonlinearity may be able to help differentiate benign from malignant breast lesions, improving the screening and diagnosis of breast cancer. Measuring the nonlinear properties of tissue requires large tissue deformations, which pose a challenge to standard motion tracking algorithms. Tracking large deformations in ultrasound requires dividing into multiple steps and accumulating the resulting sequence of displacements. The goal of this research has been to investigate and improve this multi-step accumulation process. On the scale of a whole displacement field, a comparison was made between tracking algorithms that follow individual speckle patches over time and algorithms that repeatedly measure displacement at the same spatial locations. Novel tracking algorithms were also developed that exploit temporal continuity to reduce tracking errors. On the scale of the individual displacement estimate, the covariances between different steps in the accumulation sequence were analyzed and explained for the first time using simulations and phantom experiments. Linear estimators for total displacement have also been investigated, in which adding contributions from many overlapping strain steps may be able to improve the variance accumulated displacement estimates. Knowing the covariances between steps makes it possible to predict the success of possible estimators. Finally, 3-D motion tracking in material coordinates has been implemented on phantom and ex vivo kidney samples undergoing large deformations. The experimental results are consistent with expectations from the simulation studies and will provide input data for reconstructions of elastic nonlinearity. Overall, the results of this work comprise a set of useful tools for understanding and improving large-deformation motion tracking.
An Elasticity Microscope For High Resolution Imaging Of Tissue Stiffness Using 50 Mhz Ultrasound
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Author : N. Abraham Cohn
language : en
Publisher:
Release Date : 1997
An Elasticity Microscope For High Resolution Imaging Of Tissue Stiffness Using 50 Mhz Ultrasound written by N. Abraham Cohn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Acoustical Imaging
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Author : Michael Halliwell
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-05-26
Acoustical Imaging written by Michael Halliwell and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-05-26 with Technology & Engineering categories.
The origin ofthe International Acoustical Imaging Symposium series can be traced to 1967, when a meeting on acoustical holography was held in C alifornia. In those days, acoustical holography was at the leading edge of research but, as the importance of this subject waned, so the title of the series was changed from Acoustical Holography to Acoustical Imaging in 1978. The early Symposia were held at various venues in the United States. In 1980. the series became international, with the Symposium that year taking place in Cannes in France. The pattern now is to try to met alternately in the USA and in another part of the world so that active researchers everywhere can conveniently attend at a reasonably high frequency. It was a great privilege for us in Bristol in the United Kingdom to be chosen to host the 25th Symposium, which convened on 19 March 2000 and spread over four days. We were blessed not only by good weather, but also by the attendance ofnearly 100 pa rticipants who came from 17 c ountries. A large number of papers were accepted for presentation, either orally or as posters. Whether an oral presentation or a poster, all were considered to have equal merit, and no distinction is made between them in the published proceedings. There were no parallel sessions, so every participant could attend every presentation. The re sultant disciplinary cross fertilisation maintained the t radition of past Symposia.
Tissue Elasticity Imaging
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Author : S. Kaisar Alam
language : en
Publisher: Elsevier
Release Date : 2019-06-15
Tissue Elasticity Imaging written by S. Kaisar Alam and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-15 with Science categories.
Tissue Elasticity Imaging: Volume One, Theory and Methods offers an extensive treatment of the fundamentals and applications of this groundbreaking diagnostic modality. The book introduces elasticity imaging, its history, the fundamental physics, and the different elasticity imaging methods, along with their implementation details, problems and artefacts. It is an essential resource for all researchers and practitioners interested in any elasticity imaging modality. As many diseases, including cancers, alter tissue mechanical properties, it is not always possible for conventional methods to detect changes, but with elasticity images that are produced by slow tissue deformation or low-frequency vibration, these changes can be displayed. Offers the first comprehensive reference on elasticity imaging Discusses the fundamentals of technology and their limitations and solutions, along with advanced methods and future directions Addresses the technologies and applications useful to both researchers and clinical practitioners Includes an online reference section regularly updated with advances in technology and applications