Download e-book for iPad: Advances in Acoustic Microscopy and High Resolution Imaging: by Roman Gr. Maev

By Roman Gr. Maev

ISBN-10: 3527410562

ISBN-13: 9783527410569

ISBN-10: 3527655301

ISBN-13: 9783527655304

Novel actual ideas, together with new leads to the sector of adaptive equipment and creative ways to inverse difficulties, unique suggestions in keeping with excessive harmonic imaging algorithms, fascinating vibro-acoustic imaging and vibro-modulation strategy, and so forth. have been effectively brought and proven in several reports of business fabrics and biomaterials within the previous couple of years. including the above pointed out conventional educational and functional avenues in ultrasonic imaging examine, exciting clinical discussions have lately surfaced and should optimistically proceed to undergo culmination sooner or later. The aim of this booklet is to supply an summary of the new advances in high-resolution ultrasonic imaging options and their purposes to biomaterials evaluate and commercial fabrics. the result's a special choice of papers offering novel effects and methods that have been built by way of major study teams world wide.
This ebook bargains a couple of new effects from famous authors who're engaged in features of the improvement of novel actual ideas, new tools, or implementation of recent technological suggestions into present imaging units and new functions of high-resolution imaging structures. the final word objective of this e-book is to motivate extra learn and improvement within the box to gain the nice power of excessive solution acoustic imaging and its quite a few business and biomedical purposes.

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Additional info for Advances in Acoustic Microscopy and High Resolution Imaging: From Principles to Applications

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To understand how to map tissue elasticity without the artifacts observed with static elastography, we will focus on a different approach that uses low frequency shear waves to obtain more precise tissue elasticity information. To understand the connection between the Young modulus and the shear wave velocity, one can in a first approximation consider soft tissue as an isotropic elastic medium. The mechanical behavior of such a soft solid is characterized by two parameters, K (inverse of the compressibility κ = 1/K ) and μ, which are, respectively the bulk and shear modulus.

And named elastography [14]. Their technique is based on the ultrasonic imaging of tissue deformations induced by a quasi-static compression of organs applied by the operator at the surface of the body. Tissue deformations are obtained by acquiring two pre-compression and post-compression ultrasonic images of the organ using a conventional ultrasound scanner. Consequently, static elastography is inherently a single wave approach (based on the single use of ultrasonic waves), which implies some important drawbacks.

9 Conclusion 19 the stiffness map. The cancer lesion corresponds here to a much stiffer region (>130 kPa) than surrounding tissues (<40 kPa). 7b the elasticity map exhibits a very high contrast between in vivo thyroid nodules and surrounding tissues, whereas these nodules are barely visible in the ultrasonic image. The ability of shear wave imaging to provide quantitative maps of tissue elasticity several times per second enables the study and characterization of organs exhibiting dynamic elasticity changes, such as muscles [29, 30].

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Advances in Acoustic Microscopy and High Resolution Imaging: From Principles to Applications by Roman Gr. Maev

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