Radiofrequency Coil Design for in vivo Sodium Magnetic Resonance Imaging of Mouse Kidney at 9.4T

2018 ◽  
Vol 22 (1) ◽  
pp. 65
Author(s):  
Song-I Lim ◽  
Chul-Woong Woo ◽  
Sang-Tae Kim ◽  
Bo-Young Choe ◽  
Dong-Cheol Woo
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mouse Kidney ◽  
Coil Design ◽  
Resonance Imaging ◽  
Radiofrequency Coil

scholarly journals Magnetic resonance imaging with a multi-tunable metamaterial-inspired radiofrequency coil

2021 ◽  
Vol 2015 (1) ◽  
pp. 012171
Author(s):  
V Puchnin ◽  
V Ivanov ◽  
M Gulyaev ◽  
M Zubkov
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Wide Frequency Range ◽  
Small Animals ◽  
Coil Design ◽  
Rf Coil ◽  
Resonance Imaging ◽  
Frequency Range ◽  
Radiofrequency Coil ◽  
Tunable Metamaterial

Abstract We present the initial experimental results obtained using a two-part receive/transmit (Rx/Tx) radiofrequency (RF) coil design for small animals magnetic resonance imaging at 7 T. The assembly uses a butterfly-type coil tuned to 300 MHz for scanning the 1H nuclei and a non-resonant antenna with a metamaterial-inspired resonator tunable over wide frequency range for X-nuclei. 1H, 31P, 23Na and 13C are selected as test nuclei in this work. Coil simulations show the two parts of the RF-assembly to be efficiently operating at the required frequencies. Simulations and phantom imaging show sufficiently homogeneous transverse transmit RF fields and tuning capabilities for the pilot heteronuclear experiments.

Monitoring stem cell migration in the nervous system by in vivo magnetic resonance imaging

2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S692-S692
Author(s):  
Mathias Hoehn ◽  
Uwe Himmelreich ◽  
Ralph Weber ◽  
Pedro Ramos-Cabrer ◽  
Susanne Wegener ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Nervous System ◽  
Stem Cell ◽  
Cell Migration ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Stem Cell Migration

Supramolecular Enhancement of Aminoxyl ORCA Contrast Agents

2019 ◽  
Author(s):  
Hamilton Lee ◽  
Jenica Lumata ◽  
Michael A. Luzuriaga ◽  
Candace Benjamin ◽  
Olivia Brohlin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Side Effects ◽  
Magnetic Resonance ◽  
Tobacco Mosaic Virus ◽  
Contrast Agents ◽  
Single Molecule ◽  
Organic Radical ◽  
Resonance Imaging ◽  
Physiological Conditions

<div><div><div><p>Many contrast agents for magnetic resonance imaging are based on gadolinium, however side effects limit their use in some patients. Organic radical contrast agents (ORCAs) are potential alternatives, but are reduced rapidly in physiological conditions and have low relaxivities as single molecule contrast agents. Herein, we use a supramolecular strategy where cucurbit[8]uril binds with nanomolar affinities to ORCAs and protects them against biological reductants to create a stable radical in vivo. We further over came the weak contrast by conjugating this complex on the surface of a self-assembled biomacromolecule derived from the tobacco mosaic virus.</p></div></div></div>

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