Read e-book online Acoustical imaging, volume 25: [proceedings of International PDF

By Michael Halliwell, Peter N.T. Wells

The overseas Symposium of Acoustical Imaging has been well known because the top-rated discussion board for displays of complicated study lead to either theoretical and experimental improvement. Held frequently because 1968, the symposium brings jointly foreign major researchers within the sector of acoustical imaging. The lawsuits from the twenty fifth assembly comprises articles at the following subject matters: arithmetic and Physics of Acoustical Imaging, Transducers and Arrays, Nondestructive assessment, Geophysical and Underwater Ultrasonics, Microscopy and Microscanning, Scattering via Blood and Tissue, scientific and organic photo Formation, Tissue Characterization, Tissue and movement and Blood stream, Elasticity Imaging, demanding Tissues, and Novel and rising equipment.

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Ultrason. Ferroel. Freq. Contr. UFFC-44: 935-42. , 1985, Estimation of Medium Parameters by Acoustic Echo Measurements, PhD Thesis, Technological University, Delft, The Netherlands. , 1972, Ultrasonic liver scanning: the A-scan in the normal and cirrhosis, Phys. Med. Biol. 17: 261-9. A, 1985, Texture in B-mode echograms: 3-D simulations and experiments of the effects of diffraction and scatterer density, Ultrasonic Imag 7: 142-60. , 1991, Ultrasound attenuation and B-mode texture analysis of diffuse liver disease: methods and preliminary results, Phys.

Med. Biol. 22: 987-97. , 1973, Textural features foe image classification. IEEE Trans. Syst. Man. Cyber. TSMC-3: 614-24. , 1998, Real time strain rate imaging of the left ventricle by ultrasound, J. Am. Soc. Echocardiogr. 11: 1013-9. , 1996, Precision and accuracy of acoustospectrographic parameters, Ultrasound Med. Biol. 22: 855-71. , 1998a, An in vivo ultrasonic model of liver parenchyma, IEEE Trans. Ultrason. Ferroel. Freq. Contr. UFFC-45: 739-50. , 1998b, Adaptive feature extraction with application to ultrasonic image analysis, Ultrasonic Imag.

Speckle noise"), the number of scan lines N, the window size D, number of windows, L along scan lines, frequency bandwidth W, of the employed transducer, play an important role. e. in dB) according to Eq. , Huisman and Thijssen, 1996): Where: c = speed of sound 15 K = number of discrete frequencies within band W. , 1997). , 1994; Gao et al. 1996). 2 mm). By comparing the signals at two depths within the analysis window, the relative change in mutual distance due to the external force yields an estimate of the strain.

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