tailieunhanh - Ultrasonic measurement and imaging with lateral modulation – Echo, tissue motion and elasticity

It is remarkable that the pathological state of human soft tissues highly correlates with static and low-frequency mechanical properties, particularly shear elasticity (., Sumi, 2005d). Accordingly, we have been developing ultrasonic (US)-strain measurement-based one- dimensional (1D) (Sumi et al., 1993, 1995a, 2010f; Sumi, 1999b, 2005d, 2008a, 2010d; Sumi & Matsuzawa, 2007b), 2D (Sumi et al., 1993, 1995a; Sumi, 1999c, 2005d, 2006b, 2007g, 2008a, 2008c, 2010d) and 3D (Sumi, 1999c, 2005d, 2006b, 2007g, 2010d. | 7 Ultrasonic Measurement and Imaging with Lateral Modulation - Echo Tissue Motion and Elasticity Chikayoshi Sumi Sophia University Japan 1. Introduction It is remarkable that the pathological state of human soft tissues highly correlates with static and low-frequency mechanical properties particularly shear elasticity . Sumi 2005d . Accordingly we have been developing ultrasonic US -strain-measurement-based onedimensional 1D Sumi et al. 1993 1995a 2010f Sumi 1999b 2005d 2008a 2010d Sumi Matsuzawa 2007b 2D Sumi et al. 1993 1995a Sumi 1999c 2005d 2006b 2007g 2008a 2008c 2010d and 3D Sumi 1999c 2005d 2006b 2007g 2010d shear or Young modulus reconstruction imaging techniques as differential diagnostic tools for deseases of various in vivo tissues such as the breast Sumi 1999a 2005b 2005d Sumi Matsuzawa 2007b Sumi et al. 1995b strain 1996 1997 1999b 2000b and liver Sumi et al. 2001a 2001b Sumi 2005d . cancerous deseases etc. Other soft tissues such as heart or blood vessel are also our targets . myocardinal infraction atherosclerosis etc. After the first report of the differential type inverse problem of shear modulus by Sumi 1993 1995a immediately the results obtained on agar phantoms . Sumi et al. 1994a strain shear modulus 1994b 1995d in vivo breasts . Sumi et al. 1995b 1996 1997 Sumi 1999a 1999b and in vivo liver . Sumi et al. 2000a 2001a 2001b Sumi 2005d were reported. For such in vivo tissues a suitable combination of simple minimally invasive therapy techniques such as chemotherapy cryotherapy and thermal therapy . Sumi 2005d Sumi et al. 2001a etc with our reconstruction techniques would lead to an innovative new clinical strategy that would enable differential diagnosis followed by immediate treatment so that overall medical expenses could be substantially reduced Sumi 2005d . This is because our developed techniques allow non-invasive confirming of a treatment effectiveness in realtime . a degeneration. Our early reports on the .