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Arnaud Comment

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Publications associées (110)

Accurate fast low-angle solid-state nuclear polarization measurement

Arnaud Comment, Riccardo Balzan, Tian Cheng, Andrea Capozzi

2013

An apparatus for pulsed ESR and DNP experiments using optically excited triplet states down to liquid helium temperatures

Arnaud Comment, Jacques Van Der Klink, Sami Jannin, Tim Rolf Eichhorn, Martin Haag

In standard Dynamic Nuclear Polarization (DNP) electron spins are polarized at low temperatures in a strong magnetic field and this polarization is transferred to the nuclear spins by means of a microwave field. To obtain high nuclear polarizations cryogen ...

Academic Press2013

Energy metabolism in the ischemic rat heart assessed using hyperpolarized 13C

Arnaud Comment, Josefina Adriana Maria Bastiaansen, Hikari Ananda Infinity Yoshihara

2013

13C DNP efficiency in function of the glassing matrix content at different magnetic fields

Arnaud Comment, Riccardo Balzan, Tian Cheng, Andrea Capozzi

2013

Over 35% liquid-state 13C polarization via dissolution dynamic nuclear polarization at 7 T and 1 K with ubiquitous nitroxyl radicals

Arnaud Comment, Riccardo Balzan, Tian Cheng, Yuhei Takado, Andrea Capozzi

The most versatile method to increase liquid-state 13C NMR sensitivity is dissolution dynamic nuclear polarization. The use of trityl radicals is usually required to obtain very large 13C polarization via this technique. We herein demonstrate that up to 35 ...

Royal Soc Chemistry2013

Overhauser-enhanced MR elastography

Arnaud Comment, Najat Salameh

2013

Hyperpolarized [1-13C]lactate metabolism in rat skeletal muscle in vivo

Arnaud Comment, Rolf Gruetter, Josefina Adriana Maria Bastiaansen, Yuhei Takado, Hikari Ananda Infinity Yoshihara

2013

Over 35% of liquid-state 13C polarization enhanced by TEMPOL via high field dissolution dynamic nuclear polarization

Arnaud Comment, Riccardo Balzan, Tian Cheng, Yuhei Takado, Andrea Capozzi

2013

Hyperpolarization without persistent radicals for in vivo real-time metabolic imaging

Arnaud Comment, Christophe Roussel, Mor-Miri Mishkovsky, Tian Cheng, Tim Rolf Eichhorn, Yuhei Takado, Jean-Noël Hyacinthe, Najat Salameh, Andrea Capozzi

Hyperpolarized substrates prepared via dissolution dynamic nuclear polarization have been proposed as magnetic resonance imaging (MRI) agents for cancer or cardiac failure diagnosis and therapy monitoring through the detection of metabolic impairments in v ...

National Academy of Sciences2013

Hyperpolarized [1-13C]acetylcarnitine as a tracer for cardiac metabolism

Arnaud Comment, Rolf Gruetter, Tian Cheng, Josefina Adriana Maria Bastiaansen

2013

Bioreactor to simultaneously measure three parallel in vitro preparations

Arnaud Comment, Yves Pilloud, Rolf Gruetter, Riccardo Balzan, Mor-Miri Mishkovsky, Leila Drissi Daoudi - Kleinbauer, Emine Can

2013

Dynamic Nuclear Polarization by Thermal Mixing Under Partial Saturation

Arnaud Comment, Sami Jannin

We describe a low-temperature thermodynamic model for dynamic nuclear polarization (DNP) via continuous-wave partial saturation of electron spin resonance (ESR) lines that are both homogeneously and inhomogeneously broadened. It is a variant of a reasoning ...

Springer Vienna2012

Localized in vivo hyperpolarization transfer sequences

Arnaud Comment, Rolf Gruetter, Mor-Miri Mishkovsky, Tian Cheng

In vivo localized and fully adiabatic homonuclear and heteronuclear polarization transfer experiments were designed and performed in the rat brain at 9.4 T after infusion of hyperpolarized sodium [1,2-(13) C(2) ] and sodium [1-(13) C] acetate. The method p ...

Wiley-Blackwell2012

In vivo enzymatic assay of carnitine acetyl transferase and acetylCoA synthetase using hyperpolarized acetate

Arnaud Comment, Rolf Gruetter, Mor-Miri Mishkovsky, Tian Cheng, Josefina Adriana Maria Bastiaansen

2012

A comparison of high-pass birdcage coils for small animal imaging at 9.4 and 14T

Arnaud Comment, Rolf Gruetter, Hongxia Lei, Tian Cheng, Jennifer Jung

2012

In vivo real time cardiac metabolism using hyperpolarized acetate

Arnaud Comment, Rolf Gruetter, Tian Cheng, Josefina Adriana Maria Bastiaansen

2012

Hyperpolarized 6Li as probe for hemoglobin oxygenation level

Arnaud Comment, Rolf Gruetter, Ruud van Heeswijk, Riccardo Balzan, Mor-Miri Mishkovsky

2012

Kinetic analysis of acetylCoA synthetase activity in skeletal muscle

Arnaud Comment, Rolf Gruetter, João Miguel das Neves Duarte, Mor-Miri Mishkovsky, Tian Cheng, Josefina Adriana Maria Bastiaansen

2012

In vivo detection of brain Krebs cycle intermediate by hyperpolarized magnetic resonance

Arnaud Comment, Rolf Gruetter, Mor-Miri Mishkovsky

The Krebs (or tricarboxylic acid (TCA)) cycle has a central role in the regulation of brain energy regulation and metabolism, yet brain TCA cycle intermediates have never been directly detected in vivo. This study reports the first direct in vivo observati ...

Nature Publishing Group2012

Producing radical-free hyperpolarized solutions for in vivo magnetic resonance

Arnaud Comment, Mor-Miri Mishkovsky, Tian Cheng

2012

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