Abstract
To increase granularity in human neuroimaging science, we designed and built a next-generation 7?Tesla magnetic resonance imaging scanner to reach ultra-high resolution by implementing several advances in hardware. To improve spatial encoding and increase the image signal-to-noise ratio, we developed a head-only asymmetric gradient coil (200?mT?m , 900?T?m s ) with an additional third layer of windings. We integrated a 128-channel receiver system with 64- and 96-channel receiver coil arrays to boost signal in the cerebral cortex while reducing g-factor noise to enable higher accelerations. A 16-channel transmit system reduced power deposition and improved image uniformity. The scanner routinely performs functional imaging studies at 0.35-0.45?mm isotropic spatial resolution to reveal cortical layer functional activity, achieves high angular resolution in diffusion imaging and reduces acquisition time for both functional and structural imaging.
| Original language | English |
|---|---|
| Pages (from-to) | 2048–2057 |
| Number of pages | 10 |
| Journal | Nature Methods |
| Volume | 20 |
| Issue number | 12 |
| Early online date | 27 Nov 2023 |
| DOIs | |
| Publication status | Published - Dec 2023 |