@misc{10481/68752,
year = {2021},
url = {http://hdl.handle.net/10481/68752},
abstract = {In this article, a wave propagation model is presented as the first step in the development
of a new type of transluminal procedure for performing elastography. Elastography is a medical
imaging modality for mapping the elastic properties of soft tissue. The wave propagation model is
based on a Kelvin Voigt Fractional Derivative (KVFD) viscoelastic wave equation, and is numerically
solved using a Finite Difference Time Domain (FDTD) method. Fractional rheological models, such as
the KVFD, are particularly well suited to model the viscoelastic response of soft tissue in elastography.
The transluminal procedure is based on the transmission and detection of shear waves through the
luminal wall. Shear waves travelling through the tissue are perturbed after encountering areas of
altered elasticity. These perturbations carry information of medical interest that can be extracted by
solving the inverse problem. Scattering from prostate tumours is used as an example application to
test the model. In silico results demonstrate that shear waves are satisfactorily transmitted through the
luminal wall and that echoes, coming from reflected energy at the edges of an area of altered elasticity,
which are feasibly detectable by using the transluminal approach. The model here presented provides
a useful tool to establish the feasibility of transluminal procedures based on wave propagation and
its interaction with the mechanical properties of the tissue outside the lumen.},
organization = {University College London, United Kingdom},
organization = {Talentia scholarship (grant C2012H-75146405T-1)
from the regional government of Andalusia, Spain},
organization = {the Ministry of Education and Science, Spain,
grants DPI2017-83859-R, EQC2018-004508-P and UNGR15-CE3664},
organization = {Andalusia, Spain, grants SOMM17/6109/UGR, B-TEP-026-UGR18, IE2017-5537 and P18-RT-1653},
publisher = {MDPI},
keywords = {Transluminal elastography},
keywords = {Shear wave},
keywords = {Fractional viscoelasticity},
keywords = {Kelvin voigt fractional derivative},
keywords = {Finite difference},
title = {Wave Propagation in a Fractional Viscoelastic Tissue Model: Application to Transluminal Procedures},
doi = {10.3390/s21082778},
author = {Gómez, Antonio and Rus Carlborg, Guillermo and Saffari, Nader},
}