Acceleration techniques like SENSE have enabled significant decreases in scan time, but the $$$G$$$-factor penalty on SNR limits attainable accelerations.
Wave-CAIPI lowers this $$$G$$$-factor by spreading aliasing and taking advantage of the coil sensitivity distributions. A high performance single-axis insert gradient is utilised to increase the attainable wave amplitudes and thereby increasing the effectivity of Wave-CAIPI.
Simulations and 7T phantom & in-vivo acquisitions show significant improvements in $$$G$$$-factor when using Wave-CAIPI, especially when utilizing the higher performance of the insert gradient.
Not only are the $$$G$$$-factors lower but also show increased spreading and lack hard edges, allowing for even faster acquisitions.