25 citations · 59 across the 9 of their papers we have counts for
9 papers
Pixelwise Uncertainty Quantification of Accelerated MRI Reconstruction
Ilias I. Giannakopoulos, Lokesh B Gautham Muthukumar, Yvonne W. Lui +1
Parallel imaging techniques reduce magnetic resonance imaging (MRI) scan time but image quality degrades as the acceleration factor increases. In clinical practice, conservative ac…
Global Maxwell Tomography Using the Volume-Surface Integral Equation for Improved Estimation of Electrical Properties
Ilias Giannakopoulos, José E. Cruz Serrallés, Jan Paška +3
Objective: Global Maxwell Tomography (GMT) is a noninvasive inverse optimization method for the estimation of electrical properties (EP) from magnetic resonance (MR) measurements.…
PIFON-EPT: MR-Based Electrical Property Tomography Using Physics-Informed Fourier Networks
Xinling Yu, José E. C. Serrallés, Ilias I. Giannakopoulos +4
We propose Physics-Informed Fourier Networks for Electrical Properties (EP) Tomography (PIFON-EPT), a novel deep learning-based method for EP reconstruction using noisy and/or inco…
MR-Based Electrical Property Reconstruction Using Physics-Informed Neural Networks
Xinling Yu, José E. C. Serrallés, Ilias I. Giannakopoulos +4
Electrical properties (EP), namely permittivity and electric conductivity, dictate the interactions between electromagnetic waves and biological tissue. EP can be potential biomark…
A hybrid volume-surface integral equation method for rapid electromagnetic simulations in MRI
Ilias I. Giannakopoulos, Georgy D. Guryev, José E. C. Serrallés +6
Objective: We developed a hybrid volume surface integral equation (VSIE) method based on domain decomposition to perform fast and accurate magnetic resonance imaging (MRI) simulati…
Compression of volume-surface integral equation matrices via Tucker decomposition for magnetic resonance applications
Ilias I. Giannakopoulos, Georgy D. Guryev, Jose E. C. Serralles +4
In this work, we propose a method for the compression of the coupling matrix in volume\hyp surface integral equation (VSIE) formulations. VSIE methods are used for electromagnetic…
Magnetic-resonance-based electrical property mapping using Global Maxwell Tomography with an 8-channel head coil at 7 Tesla: a simulation study
Ilias I. Giannakopoulos, José E. C. Serrallés, Luca Daniel +4
Objective: Global Maxwell Tomography (GMT) is a recently introduced volumetric technique for noninvasive estimation of electrical properties (EP) from magnetic resonance measuremen…
A Fast Volume Integral Equation Solver with Linear Basis Functions for the Accurate Computation of Electromagnetic Fields in MRI
Ioannis P. Georgakis, Ilias I. Giannakopoulos, Mikhail S. Litsarev +1
A stable volume integral equation (VIE) solver based on polarization/magnetization currents is presented, for the accurate and efficient computation of the electromagnetic scatteri…
Memory footprint reduction for the FFT-based volume integral equation method via tensor decompositions
Ilias I. Giannakopoulos, Mikhail S. Litsarev, Athanasios G. Polimeridis
We present a method of memory footprint reduction for FFT-based, electromagnetic (EM) volume integral equation (VIE) formulations. The arising Green's function tensors have low mul…