Now showing items 1-3 of 3

  • A comparison of material classification techniques for ultrasound inverse imaging 

    Zhang, Xiaodong; Broschat, Shira L.; Flynn, Patrick J. (Journal of the Acoustical Society of America, 2002-01)
    The conjugate gradient method with edge preserving regularization (CGEP) is applied to the ultrasoundinverse scattering problem for the early detection of breast tumors. To accelerate image reconstruction, several different ...
  • A conjugate gradient-neural network technique for ultrasound inverse imaging 

    Broschat, Shira L.; Zhang, Xiaodong; Flynn, Patrick J. (World Scientific Publishing, 2002-06)
    In this paper, a new technique for solving the two-dimensional inverse scattering problem for ultrasound inverse imaging is presented. Reconstruction of a two-dimensional object is accomplished using an iterative algorithm ...
  • A numerical study of conjugate gradient directions for an ultrasound inverse problem 

    Broschat, Shira L.; Zhang, Xiaodong; Flynn, Patrick J. (World Scientific Publishing, 2004-12)
    In ultrasound inverse problems, the integral equation can be nonlinear, ill-posed, and computationally expensive. One approach to solving such problems is the conjugate gradient (CG) method. A key parameter in the CG method ...