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NeuroSpin clinical platform

11.7 T Clinical MRI


Leader: Cécile Lerman
(contact : cecile.lerman@cea.fr)

Published on 28 November 2017

 

 

1) Ambitious scientific objectives


  • ​Visualize the human brain at a spatial resolution never reached before: « mesoscopic scale » (~100 microns).
  • Discover new contrasts.
  • Explore the potential of molecular imaging at very high sensitivity. 


2) Unique characteristics


  • Magnet operating in non-persisting mode for a better temporal stability,
  • Main coil composed of individual coils using a « double pancake » design for a better spatial homogeneity, 
  • Two active shielding coils, 
  • Magnetic field: 11.75 T,
  • Stored energy: 338 MJ,
  • Current: 1483 A,
  • Inductance: 308 H,
  • Cryostat length: 5 m,
  • External diameter: 5.2 m,
  • Internal diameter of the magnet tunnel: 90 cm,
  • Weight: 132 tons.
First magnet in the world with these magnetic field, internal diameter and technology!

3) Multiple technical challenges


Machine performing the winding of the « double pancake » coils.  All the « double pancake » coils have been wound individually (one side and then the other side). Autumn 2013. 
« Double pancake » coil on a test platform.  Autumn 2013.
Storage of the « double pancakes ». Individual characteristics (Autumn 2013):
- External diameter: 1,9
- Internal diameter: 1 m
- Number of conductor turns per pancake: 88.
Active shielding coil on a test platform. Characteristics of these two coils (Autumn 2013).
 Main coil assembly. Spring 2014. 

View of the magnet after the completion of the main coil assembly and the addition of the first active shielding coil. Eté 2014.​


4) LE Départ de belfort, l'arrivée et l'intallation à neurospin

 

  L'aimant dans le hall de Belfort prêt à partir
  (avril 2017)
  Les étapes du voyage
  Le voyage © Patrick Dumas (mai 2017)
​  
  L'arrivée à Saclay © Ben Jibus (mai 2017)

 La rotation à 90° de l'aimant (juin2017)       

 L'entrée dans l'arche et le positionnement
(juin 2017)