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News | Press release | Découvertes et avancées | Health ＆ life sciences | Brain | Physics
September 2021, the 11.7 Tesla MRI of the Iseult project, the most powerful in the world for human imaging, has just unveiled its first images. They validate the entire process that has enabled, thanks to multiple technological breakthroughs, the transformation of an « outstanding » magnet, delivered in 2017 to the CEA-Paris-Saclay site, into an « imager ». This MRI, designed by CEA engineers and researchers together with Siemens Healthineers, will enable major advances in fundamental research, cognitive sciences and in understanding brain pathologies.
A pumpkin: this unusual object was chosen for its multiple textures by CEA engineers and researchers to make the first images with the world's most powerful 11.7 T human whole-body MRI of the Iseult project, installed at NeuroSpin at CEA-Paris-Saclay. With a resolution of 400 microns in three dimensions, the images of the cucurbit prefigure the prowess that the scientific and technical teams of the CEA and their partners will be able to achieve in order to probe the human brain, for the benefit of fundamental research, cognitive sciences and in understanding brain pathologies. These first acquisitions validate the entire process that has made it possible, thanks to multiple technological breakthroughs, to transform an "outstanding" magnet into an MRI machine.
« The development of the Iseult project magnet has been an exceptional human, technological and industrial adventure. To see it come to fruition with the achievement of the magnet nominal field strength - 11.7 T - followed by these first high-resolution images, which are so promising, is a real source of pride for all of us » enthuses Anne-Isabelle Etienvre, director of CEA-Irfu.
These images are the culmination of 20 years of research that have enabled us to apply innovative technological developments made for CERN to medical research. This achievement is also the fruit of a Franco-German cooperation initiated in 2006, which involved academic partners, the University of Freiburg, and industrial partners, Bruker Biospin, Alstom, now part of General Electric, Guerbet and Siemens Healthineers. Siemens Healthineers has installed the MAGNETOM 11.7 T imaging equipment that has enabled the acquisition of these first images.
“With our 7 Tesla scanner MAGNETOM Terra firmly established for clinical use and our recent introduction of 0.55 Tesla High-V MRI, it is exciting to me to keep pushing the envelope even further. I am very happy that our joint team effort pays off now. We can’t wait to see what exciting new insights imaging at 11.7T will bring and to continue our long-standing innovation track at ultra-high-field”, says Arthur Kaindl, Head of MRI at Siemens Healthineers.
Nevertheless, several optimizations still need to be carried out to obtain images of a quality approaching a resolution of 100 to 200 microns at 11.7 T. Before the Iseult MRI is fully commissioned and the first in vivo images are acquired on a human subject, the teams will be working in the coming months on the final verifications of the imaging equipment and the first tests of the radiofrequency coil developed specifically for the Iseult project. In 2022, the European Aroma project will be further deployed to develop a methodology for the optimal operation of this MRI. Finally, once the health authorities have given their approval, the new MRI will be used to conduct research with the help of volunteers.
For Stanislas Dehaene, director of NeuroSpin, the neuroimaging platform at CEA-Paris-Saclay, « Thanks to this extraordinary MRI, our researchers are looking forward to studying the anatomical and structural organization of the brain in greater detail. This work will undoubtedly lead to major clinical applications ».
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.