39 citations · 119 across the 10 of their papers we have counts for
11 papers
A Concept of LNA with Low Input Impedance Using Common Base BJT for Low-Field MRI
Aleksei A. Nasonov, Mikhail V. Murzin, Nikolay V. Anisimov +4
Purpose: In magnetic resonance imaging (MRI), preamplifier decoupling is used to improve the signal-to-noise ratio of a multichannel receive coil array. In low-field and ultra-low-…
Double-resonant decoupling method in very dense dipole arrays
Masoud S. M. Mollaei, Anna Hurshkainen, Sergei Kurdjumov +1
In this paper an approach for broadening of operational band in a dense array of dipole antennas by implementing passive split-loop resonators (SLRs) as decouplers is presented. Co…
RF-coil with variable resonant frequency for multiheteronuclear ultra-high field MRI
V. A. Ivanov, A. A. Hurshkainen, G. A. Solomakha +1
Here we propose double-coil setup to allow high signal-to-noise ratio broad-range heteronuclear magnetic resonance imaging experiments: two independent coils, one of them tuned to…
Decoupling of Two Closely Located Dipoles by a Single Passive Scatterer for Ultra-High Field MRI
Masoud Sharifian Mazraeh Mollaei, Sergei Kurdjumov, Anna Hurshkainen +1
We report decoupling of two closely located resonant dipole antennas dedicated for ultra-high field magnetic resonance imaging (MRI). We show that a scatterer slightly raised over…
Experimental observation of hybrid TE-TM polarized surface waves supported by hyperbolic metasurface
Oleh Y. Yermakov, Anna A. Hurshkainen, Dmitry A. Dobrykh +5
Hyperbolic metasurfaces have gained significant attention due to their extraordinary electromagnetic properties to control propagating plane waves, but the excitation and propagati…
Decoupling of Two Closely Located Dipole Antennas by a Split-Loop Resonator
Masoud Sharifian Mazraeh Mollaei, Anna Hurshkainen, Sergey Kurdjumov +2
In this letter, we theoretically and experimentally prove the possibility of the complete passive decoupling for two parallel resonant dipoles by a split-loop resonator. Unlike pre…
Passive Decoupling of Two Closely Located Dipole Antennas
Masoud Sharifian Mazraeh Mollaei, Anna Hurshkainen, Sergei Kurdjumov +2
In this paper, we prove that two parallel dipole antennas can be decoupled by a similar but passive dipole located in the middle between them. The decoupling is proved for whatever…
Small animal whole body imaging with metamaterial-inspired RF coil
Mikhail Zubkov, Anna Hurshkainen, Ekaterina Brui +6
Preclinical magnetic resonance imaging often requires the entire body of an animal to be imaged with sufficient quality. This is usually performed by combining regions scanned with…
A Parametric Study of Radiative Dipole Body Array Coil for 7 Tesla MRI
Anna A. Hurshkainen, Bart Steensma, Stanislav B. Glybovski +5
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 bod…
A Novel Metamaterial-Inspired RF-coil for Preclinical Dual-Nuclei MRI
A. Hurshkainen, A. Nikulin, E. Georget +9
In this paper we propose, design and test a new dual-nuclei RF-coil inspired by wire metamaterial structures. The coil operates due to resonant excitation of hybridized eigenmodes…
Element Decoupling of 7T Dipole Body Arrays by EBG Metasurface Structures: Experimental Verification
Anna A. Hurshkainen, Tatyana A. Derzhavskaya, Stanislav B. Glybovski +4
Metasurfaces are artificial electromagnetic boundaries or interfaces usually implemented as two-dimensional periodic structures with subwavelength periodicity and engineered proper…