Synopsis

Keywords: Physics & Engineering: Gradient & B0 Safety, Physics & Engineering: High-Field MRI

Basic and advanced hardware systems including magnetic field gradients, receiver and transmit arrays are reviewed. When integrated together into 7T scanners advanced hardware yields non-increment increase in spatial resolution of whole-brain fMRI, Layer-fMRI and physiologic imaging.

Basic and advanced hardware systems including magnetic field gradients, receiver and transmit arrays are reviewed. Hardware performance greatly impacts BOLD EPI and its derivative sequences since they require rapid switching of read gradient pulses, dependent on gradient slew rates (SLR). Advanced head-only gradients have recently become capable of up to 200 mT/m with SLR of 900 T/m/s, much higher than conventional gradients at 80 mT/m, 200 T/m/s. Also impactful are advances in receiver array coil systems that increase SNR and acceleration. Integration of advanced hardware into 7T scanners non-incrementally increases image spatial resolution and acqusition speed in fMRI research.

Acknowledgements

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References

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