Fig. 4: The in vivo spatial SNR maps, temporal SNR maps, and noise correlation matrix for the proposed 24-channel flexible coil and 48-channel head coil. | Communications Biology

Fig. 4: The in vivo spatial SNR maps, temporal SNR maps, and noise correlation matrix for the proposed 24-channel flexible coil and 48-channel head coil.

From: Open-transmit and flexible receiver array for high resolution ultrahigh-field fMRI of the human sensorimotor cortex

Fig. 4

a The in vivo spatial SNR maps. b the temporal SNR maps. The proposed receiver coil could provide an up to threefold improvement in the SNR in the cortex region and a superior temporal-SNR value than could the 48-channel head coil. c The noise correlation matrix of the 24-channel flexible proposed coil and 48-channel head coil in human studies. The maximum and mean values of the noise correction matrix with exception for the diagonal elements are shown below the maps. These results indicate sufficient channel decoupling.

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