Changes of in vivo electrical conductivity in the brain and torso related to age, fat fraction and sex using MRI.

ABSTRACT: This work was inspired by the observation that a majority of MR-electrical properties tomography studies are based on direct comparisons with ex vivo measurements carried out on post-mortem samples in the 90's. As a result, the in vivo conductivity values obtained from MRI in the megahertz range in different types of tissues (brain, liver, tumors, muscles, etc.) found in the literature may not correspond to their ex vivo equivalent, which still serves as a reference for electromagnetic modelling. This study aims to pave the way for improving current databases since the definition of personalized electromagnetic models (e.g. for Specific Absorption Rate estimation) would benefit from better estimation. Seventeen healthy volunteers underwent MRI of both brain and thorax/abdomen using a three

SUBMITTER: He Z 

PROVIDER: S-EPMC11245625 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature