2017/10/06 by Anna Hurshkainen, Anna A. Hurshkainen, Hurshkainen, Anna A. +17
Engineering · Mathematics · Medicine · Physics and Astronomy · #Atomic physics #Computational physics #Computer science #Dipole #Dipole antenna #FOS: Physical sciences #Imaging phantom #Magnetic dipole #Magnetic resonance imaging #Mathematics #Medical Physics (physics.med-ph) #Medicine #Microwave Imaging and Scattering Analysis #Nuclear magnetic resonance #Optics #Parametric statistics #Phased array #Physics #Radiative transfer #Radiology #Resonance (particle physics) #Telecommunications #Ultrasound and Hyperthermia Applications #Wireless Body Area Networks #physics.med-ph
paper · pdf · doi:10.48550/arxiv.1710.02399
openalex publication_date 2017/10/06 · arxiv created 2020/02/18 · arxiv updated 2020/02/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this contribution we present numerical and experimental results of a parametric quantitative study of radiative dipole antennas in a phased array configuration for efficient body magnetic resonance imaging at 7T via parallel transmission. For magnetic resonance imaging (MRI) at ultrahigh fields (7T and higher) dipole antennas are commonly used in phased arrays, particularly for body imaging targets. This study reveals the effects of dipole positioning in the array (elevation of dipoles above the subject and inter-dipole spacing) on their mutual coupling, B1+ per Pacc and B1+ per maximum local SAR efficiencies as well as the RF-shimming capability. The numerical and experimental results are obtained and compared for a homogeneous phantom as well as for a real human models confirmed by in-vivo experiments.