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Author : Dustin Trefelner Steinhauer
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (74 download)
Download or read book Aspects of Thermoacoustic Tomography written by Dustin Trefelner Steinhauer and published by . This book was released on 2010 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Huabei Jiang
Publisher :
ISBN 13 : 9780750331647
Total Pages : 152 pages
Book Rating : 4.3/5 (316 download)
Download or read book Thermoacoustic Tomography written by Huabei Jiang and published by . This book was released on 2020-03-26 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first of its kind to cover the underlying principles and biomedical applications of thermoacoustic tomography (TAT). Written in a tutorial format, it describes the fundamentals of TAT; details advanced approaches for quantitative TAT; explores the development of several image enhancing schemes including both software and hardware approaches; examines array-based TAT systems; considers high-resolution TAT approaches and combinations of TAT with other imaging methods; addresses contrast agent-based molecular TAT; and discusses clinical applications and animal studies in the areas of brain, breast, joint, thyroid, liver and vascular imaging. It is a valuable resource for students, academics, and industry specialists, including biomedical engineers, electrical engineers, physicists and mathematicians.
Author : Geng Ku
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (794 download)
Download or read book Photoacoustic and Thermoacoustic Tomography written by Geng Ku and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoacoustic tomography (PAT), as well as thermoacoustic tomography (TAT), utilize electromagnetic radiation in its visible, near infrared, microwave, and radiofrequency forms, respectively, to induce acoustic waves in biological tissues for imaging purposes. Combining the advantages of both the high image contrast that results from electromagnetic absorption and the high resolution of ultrasound imaging, these new imaging modalities could be the next successful imaging techniques in biomedical applications. Basic research on PAT and TAT, and the relevant physics, is presented in Chapter I. In Chapter II, we investigate the imaging mechanisms of TAT in terms of signal generation, propagation and detection. We present a theoretical analysis as well as simulations of such imaging characteristics as contrast and resolution, accompanied by experimental results from phantom and tissue samples. In Chapter III, we discuss the further application of TAT to the imaging of biological tissues. The microwave absorption difference in normal and cancerous breast tissues, as well as its influence on thermoacoustic wave generation and the resulting transducer response, is investigated over a wide range of electromagnetic frequencies and depths of tumor locations. In Chapter IV, we describe the mechanism of PAT and the algorithm used for image reconstruction. Because of the broad bandwidth of the laser-induced ultrasonic waves and the limited bandwidth of the single transducer, multiple ultrasonic transducers, each with a different central frequency, are employed for simultaneous detection. Chapter V further demonstrates PAT's ability to image vascular structures in biological tissue based on blood's strong light absorption capability. The photoacoustic images of rat brain tumors in this study clearly reveal the angiogenesis that is associated with tumors. In ChapterVI, we report on further developing PAT to image deeply embedded optical heterogeneity in biological tissues. The improved imaging ability is attributed to better penetration by NIR light, the use of the optical contrast agent ICG (indocyanine green) and a new detection scheme of a circular scanning configuration. Deep penetrating PAT, which is based on a tissue's intrinsic contrast using laser light of 532um [mu] green light and1.06 um [mu] near infrared light, is also presented.
Author : Otmar Scherzer
Publisher : Springer Science & Business Media
ISBN 13 : 0387929193
Total Pages : 1626 pages
Book Rating : 4.3/5 (879 download)
Download or read book Handbook of Mathematical Methods in Imaging written by Otmar Scherzer and published by Springer Science & Business Media. This book was released on 2010-11-23 with total page 1626 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Mathematical Methods in Imaging provides a comprehensive treatment of the mathematical techniques used in imaging science. The material is grouped into two central themes, namely, Inverse Problems (Algorithmic Reconstruction) and Signal and Image Processing. Each section within the themes covers applications (modeling), mathematics, numerical methods (using a case example) and open questions. Written by experts in the area, the presentation is mathematically rigorous. The entries are cross-referenced for easy navigation through connected topics. Available in both print and electronic forms, the handbook is enhanced by more than 150 illustrations and an extended bibliography. It will benefit students, scientists and researchers in applied mathematics. Engineers and computer scientists working in imaging will also find this handbook useful.
Author : Otmar Scherzer
Publisher : Springer Science & Business Media
ISBN 13 : 0387309314
Total Pages : 323 pages
Book Rating : 4.3/5 (873 download)
Download or read book Variational Methods in Imaging written by Otmar Scherzer and published by Springer Science & Business Media. This book was released on 2008-10-09 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the study of variational methods in imaging. The presentation is mathematically rigorous and covers a detailed treatment of the approach from an inverse problems point of view. Many numerical examples accompany the theory throughout the text. It is geared towards graduate students and researchers in applied mathematics. Researchers in the area of imaging science will also find this book appealing. It can serve as a main text in courses in image processing or as a supplemental text for courses on regularization and inverse problems at the graduate level.
Author : Linh V. Nguyen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (686 download)
Download or read book Mathematical Problems of Thermoacoustic Tomography written by Linh V. Nguyen and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic tomography (TAT) is a newly emerging modality in biomedical imaging. It combines the good contrast of electromagnetic and good resolution of ultrasound imaging. The mathematical model of TAT is the observability problem for the wave equation: one observes the data on a hyper-surface and reconstructs the initial perturbation. In this dissertation, we consider several mathematical problems of TAT. The first problem is the inversion formulas. We provide a family of closed form inversion formulas to reconstruct the initial perturbation from the observed data. The second problem is the range description. We present the range description of the spherical mean Radon transform, which is an important transform in TAT. The next problem is the stability analysis for TAT. We prove that the reconstruction of the initial perturbation from observed data is not Hölder stable if some observability condition is violated. The last problem is the speed determination. The question is whether the observed data uniquely determines the ultrasound speed and initial perturbation. We provide some initial results on this issue. They include the unique determination of the unknown constant speed, a weak local uniqueness, a characterization of the non-uniqueness, and a characterization of the kernel of the linearized operator.
Author : Yao Xie
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (649 download)
Download or read book Adaptive and Robust Techniques (ART) for Thermoacoustic Tomography written by Yao Xie and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: In this thesis, we present Adaptive and Robust Techniques (ART) for thermoacoustic tomography (TAT), with applications to breast cancer detection and brain imaging. TAT is an emerging medical imaging technique that combines the merits of high contrast due to electromagnetic or laser stimulation and high resolution offered by thermal acoustic imaging. Image reconstruction via proper signal processing techniques is one of the key problems in TAT. The current image reconstruction methods used for TAT, such as the widely used Delay-and-Sum (DAS) approach, are data-independent and suffer from low resolution, high sidelobe levels, and poor interference rejection capabilities. Also, the amplitude and phase distortion problems of thermoacoustic signals due to propagation in the non-homogeneous media are not properly handled by the existing methods. The data-adaptive ART can have much better resolution and much better interference rejection capabilities than their data-independent counterparts. By allowing certain uncertainties in the parameters, ART can be used to mitigate the amplitude and phase distortion problems encountered in TAT. Using both simulated and experimentally measured data, we demonstrate the excellent performance of ART: high resolution, low sidelobe level, and much better interference rejection capability.
Author : Lihong V. Wang
Publisher : CRC Press
ISBN 13 : 1420059920
Total Pages : 518 pages
Book Rating : 4.4/5 (2 download)
Download or read book Photoacoustic Imaging and Spectroscopy written by Lihong V. Wang and published by CRC Press. This book was released on 2017-12-19 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoacoustics promises to revolutionize medical imaging and may well make as dramatic a contribution to modern medicine as the discovery of the x-ray itself once did. Combining electromagnetic and ultrasonic waves synergistically, photoacoustics can provide deep speckle-free imaging with high electromagnetic contrast at high ultrasonic resolution and without any health risk. While photoacoustic imaging is probably the fastest growing biomedical imaging technology, this book is the first comprehensive volume in this emerging field covering both the physics and the remarkable noninvasive applications that are changing diagnostic medicine. Bringing together the leading pioneers in this field to write about their own work, Photoacoustic Imaging and Spectroscopy is the first to provide a full account of the latest research and developing applications in the area of biomedical photoacoustics. Photoacoustics can provide functional sensing of physiological parameters such as the oxygen saturation of hemoglobin. It can also provide high-contrast functional imaging of angiogenesis and hypermetabolism in tumors in vivo. Discussing these remarkable noninvasive applications and so much more, this reference is essential reading for all researchers in medical imaging and those clinicians working at the cutting-edge of modern biotechnology to develop diagnostic techniques that can save many lives and just as importantly do no harm.
Author : Dazi Feng
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (59 download)
Download or read book Microwave-induced Thermoacoustic Tomography written by Dazi Feng and published by . This book was released on 2001 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Justin Tittelfitz
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (881 download)
Download or read book Thermoacoustic Tomography in Elastic Media written by Justin Tittelfitz and published by . This book was released on 2013 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: We investigate the problem of recovering the initial displacement f for a solution u of a linear, isotropic, non-homogeneous elastic wave equation, given measurements of u on [0, T ] boundary of Omega, where Omega in R3 is some bounded domain containing the support of f . For the acoustic wave equation, this problem is known as thermoacoustic tomography (TAT), and has been well-studied; for the elastic wave equation, the situation is somewhat more subtle, and we give sufficient conditions on the Lame parameters to ensure that recovery is possible. Following this, we investigate the numerical simulation of this problem.
Author : Benjamin P Palacios
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (14 download)
Download or read book The Inverse Problem of Thermoacoustic Tomography in Attenuating Media written by Benjamin P Palacios and published by . This book was released on 2018 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic tomography is a developing medical imaging technique that combines the propagation of electromagnetic and ultrasound waves with the purpose of producing a high contrast and high resolution internal image of a specific part of the body. The underlying physics involved in this technique naturally divides its theoretical analysis into two different problems corresponding to each type of waves. One of them is the inverse thermoacoustic tomography problem which studies the propagation of ultrasound across biological tissues and aims to obtain internal information related with the initial source of the acoustic waves, from data acquired on transducers placed outside the body of interest. A natural difficulty in the analysis of ultrasound propagation is the attenuation effect caused by different tissues, in particular in the case of biological bodies. Its study is of course of great interest for real applications of this technology and it has received considerable attention in the last few years. In this thesis, I review some previous results for the thermoacoustic problem in the absence of acoustic dissipation, and in the second part, I analyze the inverse problem of thermoacoustic tomography in the presence of two types of attenuation models, local and nonlocal in time, and provide reconstruction formulas for both cases under some assumptions on the geometry of the problem. New results on uniqueness and stability of the inverse problem in the latter case are also established.
Author : Huan Qin
Publisher : Frontiers Media SA
ISBN 13 : 2832514472
Total Pages : 139 pages
Book Rating : 4.8/5 (325 download)
Download or read book Microwave-induced thermoacoustic imaging/photoacoustic imaging written by Huan Qin and published by Frontiers Media SA. This book was released on 2023-02-13 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xing Jin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (69 download)
Download or read book Microwave-induced Thermoacoustic Tomography written by Xing Jin and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research is primarily focused on developing potential applications for microwaveinduced thermoacoustic tomography and correcting for image degradations caused by acoustic heterogeneities. Microwave-induced thermoacoustic tomography was first used to verify the feasibility of noninvasively detecting the coagulated damage based on different dielectric properties between normal tissue and lesion treated with high intensity focused ultrasound. Good image contrasts were obtained for the lesions. A comparison of the size of the lesion measured with microwave-induced thermoacoustic tomography and the size measured by a gross pathologic photograph was presented to verify the effectiveness the proposed method. Clinical data for breast tumors were also collected to verify the feasibility of using microwave-induced thermoacoustic tomography in breast cancer imaging. Next, the effects of acoustic heterogeneities on microwave-induced thermoacoustic tomography in weakly refractive medium were investigated. A correction method based on ultrasonic transmission tomography was proposed to correct for the image distortion. Numerical simulations and phantom experiments verify the effectiveness of this correction method. The compensation is important for obtaining higher resolution images of small tumors in acoustically heterogeneous tissues. Finally, the effects of the highly refractive skull on transcranial brain imaging were studied. A numerical method, which considered wave reflection and refraction at the skull surfaces, was proposed to compensate for the image degradation. The results obtained with the proposed model were compared with the results without considering the skull-induced distortion to evaluate the skull-induced effects on the image reconstruction. It was demonstrated by numerical simulations and phantom experiments that the image quality could be improved by incorporating the skull shape and acoustic properties into image reconstruction. This compensation method is important when the thickness of skull cannot be neglected in transcranial brain imaging.
Author : Lorenzo Crocco
Publisher : Springer
ISBN 13 : 3319750070
Total Pages : 250 pages
Book Rating : 4.3/5 (197 download)
Download or read book Emerging Electromagnetic Technologies for Brain Diseases Diagnostics, Monitoring and Therapy written by Lorenzo Crocco and published by Springer. This book was released on 2018-03-10 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely book presents innovative technologies for use in the diagnosis, monitoring, and treatment of brain disease. These technologies offer exciting possibilities in the medical field owing to their low-cost, portability and safety. The authors address cerebrovascular diseases such as stroke, ischemia, haemorrhage, and vasospasm, these diseases having an ever-increasing societal relevance due to the global ageing population. The authors describe the potential of novel techniques such as microwave imaging and present innovative modalities for treatment of brain tumours using electromagnetic fields and nano-composites, as well as for monitoring brain temperature during surgery. Finally, Emerging Electromagnetic Technologies for Brain Diseases Diagnostics, Monitoring and Therapy addresses the perspectives which arise from multi-modal multi-spectral EM modalities, which make a synergic use of the different portions of the electromagnetic spectrum. This text will be of interest to readers from various different areas, given the fundamental interdisciplinarity of the subject matter. This includes researchers or practitioners in the field of electrical engineering, applied physicists, and applied mathematicians working on imaging applications for biomedical and electromagnetic technologies. Neurologists and radiologists may also find this book of interest, as may graduate students in these areas.
Author : Plamen Stefanov
Publisher : American Mathematical Soc.
ISBN 13 : 1470410796
Total Pages : 322 pages
Book Rating : 4.4/5 (74 download)
Download or read book Inverse Problems and Applications written by Plamen Stefanov and published by American Mathematical Soc.. This book was released on 2014-05-05 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of two conferences on Inverse Problems and Applications, held in 2012, to celebrate the work of Gunther Uhlmann. The first conference was held at the University of California, Irvine, from June 18-22, 2012, and the second was held at Zhejiang University, Hangzhou, China, from September 17-21, 2012. The topics covered include inverse problems in medical imaging, scattering theory, geometry and image processing, and the mathematical theory of cloaking, as well as methods related to inverse problems.
Author : Peter Kuchment
Publisher : SIAM
ISBN 13 : 1611973287
Total Pages : 238 pages
Book Rating : 4.6/5 (119 download)
Download or read book The Radon Transform and Medical Imaging written by Peter Kuchment and published by SIAM. This book was released on 2014-03-20 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book surveys the main mathematical ideas and techniques behind some well-established imaging modalities such as X-ray CT and emission tomography, as well as a variety of newly developing coupled-physics or hybrid techniques, including thermoacoustic tomography. The Radon Transform and Medical Imaging emphasizes mathematical techniques and ideas arising across the spectrum of medical imaging modalities and explains important concepts concerning inversion, stability, incomplete data effects, the role of interior information, and other issues critical to all medical imaging methods. For nonexperts, the author provides appendices that cover background information on notation, Fourier analysis, geometric rays, and linear operators. The vast bibliography, with over 825 entries, directs readers to a wide array of additional information sources on medical imaging for further study.
Author : Yong Zhang
Publisher : World Scientific
ISBN 13 : 9813145889
Total Pages : 698 pages
Book Rating : 4.8/5 (131 download)
Download or read book Biotechnology And Medical Science - Proceedings Of The 2016 International Conference written by Yong Zhang and published by World Scientific. This book was released on 2016-08-25 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an all-embracing review of biotechnology, biomedical engineering, bioinformatics, pharmacy and medicinal chemistry, and biopharmaceutical technology. Existing theories and the latest findings are discussed. Researchers, engineers, academics, and industry professionals will find this book an invaluable read.
