User profiles for Thomas H. Mareci

Thomas H. Mareci

Professor of Biochemistry and Molecular Biology, University of Florida
Verified email at ufl.edu
Cited by 8334

Generalized diffusion tensor imaging and analytical relationships between diffusion tensor imaging and high angular resolution diffusion imaging

E Özarslan, TH Mareci - … in Medicine: An Official Journal of the …, 2003 - Wiley Online Library
A new method for mapping diffusivity profiles in tissue is presented. The Bloch‐Torrey
equation is modified to include a diffusion term with an arbitrary rank Cartesian tensor. This …

Resolution of complex tissue microarchitecture using the diffusion orientation transform (DOT)

…, TM Shepherd, BC Vemuri, SJ Blackband, TH Mareci - NeuroImage, 2006 - Elsevier
This article describes an accurate and fast method for fiber orientation mapping using
multidirectional diffusion-weighted magnetic resonance (MR) data. This novel approach utilizes …

A novel tensor distribution model for the diffusion-weighted MR signal

B Jian, BC Vemuri, E Özarslan, PR Carney, TH Mareci - NeuroImage, 2007 - Elsevier
Diffusion MRI is a non-invasive imaging technique that allows the measurement of water
molecule diffusion through tissue in vivo. The directional features of water diffusion allow one to …

A constrained variational principle for direct estimation and smoothing of the diffusion tensor field from complex DWI

…, BC Vemuri, Y Chen, TH Mareci - IEEE transactions on …, 2004 - ieeexplore.ieee.org
In this paper, we present a novel constrained variational principle for simultaneous smoothing
and estimation of the diffusion tensor field from complex valued diffusion-weighted images …

Characterization of anomalous diffusion in porous biological tissues using fractional order derivatives and entropy

…, C Ingo, L Colon-Perez, W Triplett, TH Mareci - Microporous and …, 2013 - Elsevier
In this high-resolution magnetic resonance imaging (MRI) study at 17.6 Tesla of a fixed rat
brain, we used the continuous time random walk theory (CTRW) for Brownian motion to …

Generalized scalar measures for diffusion MRI using trace, variance, and entropy

…, BC Vemuri, TH Mareci - Magnetic Resonance in …, 2005 - Wiley Online Library
This paper details the derivation of rotationally invariant scalar measures from higher‐rank
diffusion tensors (DTs) and functions defined on a unit sphere. This was accomplished with …

On random walks and entropy in diffusion‐weighted magnetic resonance imaging studies of neural tissue

…, L Colon‐Perez, W Triplett, TH Mareci - Magnetic resonance …, 2014 - Wiley Online Library
Purpose In diffusion‐weighted MRI studies of neural tissue, the classical model assumes
the statistical mechanics of Brownian motion and predicts a monoexponential signal decay. …

Postmortem interval alters the water relaxation and diffusion properties of rat nervous tissue—implications for MRI studies of human autopsy samples

…, JJ Flint, PE Thelwall, GJ Stanisz, TH Mareci… - Neuroimage, 2009 - Elsevier
High-resolution imaging of human autopsy tissues may improve our understanding of in vivo
MRI findings, but interpretation is complicated because samples are obtained by immersion …

A fractal derivative model for the characterization of anomalous diffusion in magnetic resonance imaging

…, W Chen, RG Gatto, L Colon-Perez, TH Mareci… - … in Nonlinear Science …, 2016 - Elsevier
Non-Gaussian (anomalous) diffusion is wide spread in biological tissues where its effects
modulate chemical reactions and membrane transport. When viewed using magnetic …

Sensitivity analysis of an image-based solid tumor computational model with heterogeneous vasculature and porosity

GL Pishko, GW Astary, TH Mareci… - Annals of biomedical …, 2011 - Springer
An MR image-based computational model of a murine KHT sarcoma is presented that
allows the calculation of plasma fluid and solute transport within tissue. Such image-based …