le Chen

• University of Duisburg-Essen

1. Using Value Chain Analysis to Promote NbS This report applies Value Chain Analysis (VCA) to key economic sectors within the MERLIN project, exploring how Nature-based Solutions (NbS) can be integrated into freshwater ecosystem restoration. The focus of VCA is to understand and illustrate the mechanisms through which value is created across secto...

The use of dielectric pads in high-field MRI can help to improve the |B1+| homogeneity and/or reduce the peak specific absorption rate (SAR). It is usually based on cushions or films with a high permittivity and low loss tangent, which are added between the radio-frequency (RF) coil and the body's surface. Up to now the approach has been evaluated...

The RF-field inhomogeneity problem of MRI at high resonance frequency is investigated from an electromagnetic viewpoint by numerical FEM simulations. The evaluation is based on a simple two-dimensional model including a cylinder phantom with spatially constant but frequency-dependent material parameters of a head-tissue-simulating liquid (HTSL) and...

INTRODUCTION and OBJECTIVES: The RF field excitation homogeneity problem of MRI at high resonance frequencies is investigated on the basis of the simplest two-dimensional setup including a cylinder phantom with spatially constant but frequency-dependent material parameters and an impressed surface current distribution between the phantom's surface...