Individualized SAR calculations using computer vision‐based MR segmentation and a fast electromagnetic solver

E Milshteyn, G Guryev… - Magnetic resonance …, 2021 - Wiley Online Library
Purpose We propose a fast, patient‐specific workflow for on‐line specific absorption rate
(SAR) supervision. An individualized electromagnetic model is created while the subject is …

Use of machine learning to improve the estimation of conductivity and permittivity based on longitudinal relaxation time T1 in magnetic resonance at 7 T

D Hernandez, KN Kim - Scientific Reports, 2023 - nature.com
Electrical property tomography (EPT) is a noninvasive method that uses magnetic
resonance imaging (MRI) to estimate the conductivity and permittivity of tissues, and hence …

Accuracy and precision of electrical permittivity mapping at 3T: the impact of three mapping techniques

S Gavazzi, CAT van den Berg, A Sbrizzi… - Magnetic resonance …, 2019 - Wiley Online Library
Purpose To investigate the sequence‐specific impact of amplitude mapping on the accuracy
and precision of permittivity reconstruction at 3T in the pelvic region. Methods maps …

EPTlib: An open-source extensible collection of electric properties tomography techniques

A Arduino - Applied Sciences, 2021 - mdpi.com
Featured Application EPTlib is an ongoing project for an open-source extensible C++ library
collecting electric properties tomography techniques. It is freely distributed and includes a …

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

Z He, P Soullié, P Lefebvre, K Ambarki, J Felblinger… - Scientific Reports, 2024 - nature.com
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 …

Improving phase‐based conductivity reconstruction by means of deep learning–based denoising of phase data for 3T MRI

KJ Jung, S Mandija, JH Kim, K Ryu… - Magnetic …, 2021 - Wiley Online Library
Purpose To denoise phase using a deep learning method for phase‐based in vivo electrical
conductivity reconstruction in a 3T MR system. Methods For phase deep‐learning denoising …

Magnetic resonance electrical property mapping at 21.1 T: a study of conductivity and permittivity in phantoms, ex vivo tissue and in vivo ischemia

G Amouzandeh, F Mentink-Vigier… - Physics in Medicine …, 2020 - iopscience.iop.org
Electrical properties (EP), namely conductivity and permittivity, can provide endogenous
contrast for tissue characterization. Using electrical property tomography (EPT), maps of EP …

A reusable 3D printed brain‐like phantom for benchmarking electrical properties tomography reconstructions

TG Meerbothe, S Florczak… - Magnetic …, 2024 - Wiley Online Library
Purpose In MR electrical properties tomography (MR‐EPT), electrical properties (EPs,
conductivity and permittivity) are reconstructed from MR measurements. Phantom …

[HTML][HTML] Using the Probability Density Function-Based Channel-Combination Bloch–Siegert Method Realizes Permittivity Imaging at 3T

J Wang, Y Gao, SX Xin - Bioengineering, 2024 - mdpi.com
Magnetic resonance electrical properties tomography (MR EPT) can retrieve permittivity from
the B 1+ magnitude. However, the accuracy of the permittivity measurement using MR EPT …

Effect of radiofrequency inhomogeneity on water-content based electrical properties tomography and its correction by flip angle maps

J Han, Y Gao, X Nan, X Yu, F Liu, SX Xin - Magnetic Resonance Imaging, 2021 - Elsevier
Water-content based electrical properties tomography (wEPT) can retrieve electrical
properties (EPs) from water-content maps. B 1+ field information is not involved in the …