China's first 7T magnetic resonance instrument introduced

Recently, China's first 7T (Tesla) Siemens Human Body Whole Body Magnetic Resonance Imaging System Launch Ceremony and the International High Field Magnetic Resonance System Summit was held in Beijing. Representatives from more than 20 countries and regions around the world attended.

The first 7T nuclear magnetic resonance imaging system in China, which was introduced in China, is currently one of the most powerful imaging devices in the world. It has been installed and commissioned by the Institute of Biophysics of the Chinese Academy of Sciences. It will be used for brains. Functional imaging science.

According to Zhuo Yan, deputy director of the cognitive laboratory of the Institute of Biophysics of the Chinese Academy of Sciences, the most critical factor in measuring the capabilities of the magnetic resonance system is the signal-to-noise ratio. The greater the magnetic field of the instrument, the higher the corresponding signal-to-noise ratio. The magnetic field strength of medical MRI instruments that people are familiar with is only about 1.5T, and the 3T system was used previously by the Institute of Biophysics. Due to its low sensitivity, it has not been applied to the further development of scientific research.

The 7T system introduced this time can detect functional signals that could not be detected in the past, and has become an important means for studying diseases such as depression, Alzheimer's disease, drug addiction, and internet addiction. What is more significant is that the spectral resolution of the 7T system is high. Combined with multi-core imaging, it plays an important role in nuclear imaging in physiology and metabolism. It will greatly expand the cognitive function and disease control of the brain. .

Zhuo Yan said: "The strong magnetic field of this device can make the imaging sharper and the fine structure of the observation brain more clearly."

In fact, the introduction of the 7T MRI system does not mean that "everything is ready and it owes its use." Researchers also need to creatively connect, connect, and integrate this newly-imported device to find the best conditions for this instrument to apply to brain imaging research.

In addition, research on the transmitting and receiving systems and related coils on the 7T and higher super-high field systems has always been the focus of competition among scientists from various countries. At present, my scientist has the ability to research and develop, reform and debug the project.

Zhuo Yan told reporters that the biological physics visual stimuli presentation and response signal simultaneous recording system, the 32-lead synchronous EEG recording system under high magnetic field, the monkey functional magnetic resonance experimental system, and the central data processing and storage system have achieved remarkable results. Results.