New scientific breakthrough: The world's most powerful MRI machine reveals unprecedented and surprising images of the human brain

The MRI device marks a substantial advance in the field of neuroscience, providing crucial information about the complexity and functioning of the central organ of the human body.

Axial view of the brain, under the same acquisition time, but with different magnetic field intensities - Photo Reproduction/French Atomic Energy Commission (CEA)

Advances in technology have allowed scientists to delve deeper into the mysteries of the human brain. The French Atomic Energy Commission (CEA) announced on Tuesday (02), revealed the first images of the human brain obtained by the most powerful magnetic resonance imaging device in the world. This advanced scanner is capable of providing unprecedented and stunning images of the brain structure. According to those responsible for the project, the device has achieved an unprecedented level of precision, which could be crucial for detecting diseases.

Located in a state-of-the-art laboratory, the new MRI machine offers unprecedented resolution, allowing scientists to view microscopic details of the brain with unparalleled clarity. This achievement represents a significant leap forward in the field of neuroscience, offering crucial insights into the complexity and functionality of the human body's central organ.

Equipment

The machine is installed in a laboratory in Saclay, a city south of Paris. Its first use occurred in 2021, when researchers scanned a pumpkin. However, only recently did health authorities give authorization for the use of this technology in humans. Over the past few months, around 20 healthy volunteers have volunteered to submit their brains for scanning. According to Alexandre Vignaud, one of the physicists involved in the project, an unprecedented level of precision was achieved in the CEA.

As described by the physicist, the magnetic field generated by the scanner reaches an intensity of 11.7 tesla. This magnitude enables the machine to capture images with ten times greater precision than those obtained by conventional equipment used in hospital environments, which generally operate with powers not exceeding three teslas. In a comparative analysis carried out by Vignaud on a computer screen, images obtained by the powerful scanner, nicknamed Iseult, were compared with images from conventional magnetic resonance imaging.

The physicist also highlighted that using this equipment it was possible to visualize tiny blood vessels that irrigate the cerebral cortex, as well as brain details that were previously practically imperceptible.

Machine Structure

The device consists of a cylinder five meters wide and high. Inside this cylinder is a 132-ton magnet, powered by a 1,500 amp coil. The patient entrance is 90 centimeters wide. This machine is the fruit of two decades of research resulting from a collaboration between French and German engineers. Although the United States and South Korea are developing MRI machines of equal power, they have not yet begun imaging tests on humans. One of the main objectives of this project is to deepen the understanding of brain anatomy and identify the areas that are activated during different tasks.

Scientists have already used MRI scanners to demonstrate that when the brain recognizes specific elements, such as faces, places or words, two regions of the cerebral cortex are activated. The 11.7 Tesla power will help Iseult "increase our understanding of the relationship between brain structure and cognitive functions, for example, while reading a book or performing mental calculations", said Nicolas Boulant, scientific director of the project.

What to expect?

Scientists have high expectations regarding the scanner's ability to assist in the investigation of neurodegenerative diseases, such as Parkinson's or Alzheimer's, and psychological problems, such as depression or schizophrenia. For example, it is known that a specific area of ​​the brain, the hippocampus, plays a crucial role in Alzheimer's disease. Anne-Isabelle Etienvre, a researcher at CEA, expressed optimism about gaining an in-depth understanding of how cells function in the cerebral cortex.

Scientists also intend to map the distribution of certain medications, such as lithium, used to treat bipolar disorder, within the brain. The powerful magnetic field generated by MRI could help identify the brain areas affected by lithium. This promising tool has the potential to help identify patients who will respond more effectively or less effectively to the medication. Etienvre highlighted that a better understanding of these highly debilitating diseases could result in earlier diagnoses and, consequently, more effective treatments.

Iseult should not be used in common patients in the following years. This is due to the fact that, as explained by Boulant, the device is not designed to be a clinical diagnostic tool. However, we hope that the insights obtained can be applied in hospital contexts. A new set of volunteers will be recruited in the coming months to carry out brain scans.