Diffuse optics for tissue monitoring and tomography

T Durduran, R Choe, WB Baker… - Reports on progress in …, 2010 - iopscience.iop.org
This review describes the diffusion model for light transport in tissues and the medical
applications of diffuse light. Diffuse optics is particularly useful for measurement of tissue …

Plug-and-play priors for bright field electron tomography and sparse interpolation

S Sreehari, SV Venkatakrishnan… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
Many material and biological samples in scientific imaging are characterized by nonlocal
repeating structures. These are studied using scanning electron microscopy and electron …

Parameter estimation with the multigrid-homotopy method for a nonlinear diffusion equation

T Liu - Journal of Computational and Applied Mathematics, 2022 - Elsevier
This paper is concerned with the numerical identification of the piecewise constant
permeability function for a nonlinear diffusion equation within the two-phase porous media …

TIMBIR: A method for time-space reconstruction from interlaced views

KA Mohan, SV Venkatakrishnan… - IEEE Transactions …, 2015 - ieeexplore.ieee.org
Synchrotron X-ray computed tomography (SXCT) is increasingly being used for 3-D imaging
of material samples at micron and finer scales. The success of these techniques has …

Combination of multigrid with constraint data for inverse problem of nonlinear diffusion equation

T Liu, D Ouyang, L Guo, R Qiu, Y Qi, W Xie, Q Ma… - Mathematics, 2023 - mdpi.com
This paper delves into a rapid and accurate numerical solution for the inverse problem of the
nonlinear diffusion equation in the context of multiphase porous media flow. For the …

A model based iterative reconstruction algorithm for high angle annular dark field-scanning transmission electron microscope (HAADF-STEM) tomography

SV Venkatakrishnan, LF Drummy… - … on Image Processing, 2013 - ieeexplore.ieee.org
High angle annular dark field (HAADF)-scanning transmission electron microscope (STEM)
data is increasingly being used in the physical sciences to research materials in 3D because …

A fast multilevel algorithm for wavelet-regularized image restoration

C Vonesch, M Unser - IEEE Transactions on Image Processing, 2009 - ieeexplore.ieee.org
We present a multilevel extension of the popular ldquothresholded Landweberrdquo
algorithm for wavelet-regularized image restoration that yields an order of magnitude speed …

[HTML][HTML] A multigrid–homotopy method for nonlinear inverse problems

T Liu - Computers & Mathematics with Applications, 2020 - Elsevier
In the present contribution, we develop a novel method combining the multigrid idea and the
homotopy technique for nonlinear inverse problems, in which the forward problems are …

Model-based iterative reconstruction for bright-field electron tomography

SV Venkatakrishnan, LF Drummy… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
Bright-Field (BF) electron tomography (ET) has been widely used in the life sciences for 3-D
imaging of biological specimens. However, while BF-ET is popular in the life sciences, 3-D …

Parameter estimation techniques for a chemotaxis model inspired by Cancer-on-Chip (COC) experiments

EC Braun, G Bretti, R Natalini - International Journal of Non-Linear …, 2022 - Elsevier
The present work is inspired by laboratory experiments, investigating the cross-talk between
immune and cancer cells in a confined environment given by a microfluidic chip, the so …