The cryogenic system for NEUROSPIN laboratory: Main features and Refrigerator commissioning

Crispel, S.; Brédy, P.; Gratiot, Florence; Grillot, D.; Lannou, H.; Mantileri, C.; Flavien, G.; Deschildre, C.; Roussel, Thierry

doi:10.1063/1.4706911

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…In a global competitive tendering process Air Liquide (Sassenage, France) was selected to produce the helium liquefier that was tested on site after been integrated in the NeuroSpin building [36].…”

Section: Cryogenicsmentioning

confidence: 99%

Human brain MRI at 500 MHz, scientific perspectives and technological challenges

Bihan¹,

Schild²

2017

Supercond. Sci. Technol.

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The understanding of the human brain is one of the main scientific challenges of the 21st century. In the early 2000s the French Alternative Energies and Atomic Energy Commission launched a program to conceive and build a 'human brain explorer', the first human MRI scanner operating at 11.7 T. This scanner was envisioned to be part of the ambitious French-German project Iseult, bridging together industrial and academic partners to push the limits of molecular neuroimaging, from mouse to man, using ultra-high field MRI. In this article we provide a summary of the main neuroscience and medical targets of the Iseult project, mainly to acquire within timescales compatible with human tolerances images at a scale of 100 μm at which everything remains to discover, and to create new approaches to develop new imaging biomarkers for specific neurological and psychiatric disorders. The system specifications, the technological challenges, in terms of magnet design, winding technology, cryogenics, quench protection, stability control, and the solutions which have been chosen to overcome them and build this outstanding instrument are provided. Lines of the research and development which will be necessary to fully exploit the potential of this and other UHF MRI scanners are also outlined.

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Section: Cryogenicsmentioning

confidence: 99%

Human brain MRI at 500 MHz, scientific perspectives and technological challenges

Bihan¹,

Schild²

2017

Supercond. Sci. Technol.

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Latest Progress on the Iseult/INUMAC Whole Body 11.7 T MRI Magnet

Védrine

Maksoud

Aubert

et al. 2012

IEEE Trans. Appl. Supercond.

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The Whole Body 11.7 T MRI Magnet is an actively shielded magnet system, with a stored energy of 338 MJ and an inductance of 308 H. Operating at a homogeneous field level of 11.75 T within a 90 cm warm bore, the cryostat has external dimensions of 4.8 m in diameter and 5.0 m in length. It is part of the Iseult/Inumac project, a French-German initiative focused on very-high-magnetic-field molecular imaging to improve sensitivity, spatial, temporal, and spectral resolution for preclinical and/or clinical MR systems. After the qualification of two first unit lengths of 820 m, the NbTi conductor with a current of 1483 A is now being produced at Luvata Waterbury. Winding of the main coil, made of 170 double pancakes, is starting at Alstom Belfort. Several pieces of equipment have already been delivered to the Neurospin site, CEA Saclay,; including the main refrigerator produced by Air Liquide. Several prototypes have been tested and confirmed the soundness of the magnet design. This paper describes the 11.7 T magnet and the latest progress in its design and fabrication.

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