In order to increase the granularity of neuroimaging, David A. Feinberg et al. from the University of California published a paper in Nature Methods, designing and building the next generation 7Tesla magnetic resonance imaging scanner, achieving several hardware advancements to achieve ultra-high resolution.
In order to improve spatial encoding and enhance image signal-to-noise ratio, a head only asymmetric gradient coil (200mT/M, 900T/m.s) was developed, and a third layer winding was added. Integrating a 128 channel receiver system with 64 and 96 channel receiver coil arrays to enhance signals in the cerebral cortex while reducing G-factor noise for higher acceleration. The 16 channel transmission system reduces power deposition and improves image uniformity.
This scanner, typically with an isotropic spatial resolution of 0.35-0.45mm, is used for functional imaging studies to reveal cortical functional activity. In diffusion imaging, it achieves high angular resolution and reduces the acquisition time for functional and structural imaging.
Figure 1: The next generation NexGen 7 Tesla scanner.
Figure 2: High density receiving array coils and transmitting array coils.
Figure 3: EchoPlanar Imaging (EPI) of NexGen 7T.
Figure 4: Diffusion and structural imaging.
Editor:Sichuan Jinzhongde Science and Technology Research Institute
Source: High functional film
