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Dear experts,
I would like to calculate the SNR by dividing the mean intensity of the
signal of interest by the SD of the noise. To do this, I would like to
create a small circular ROI and place it within the region of interest and
a larger circular ROI and place it within the 'background' region that is
parcelled to each subject in apas+head.mgz (ID=130).
Do you know what functions I can use to create these ROIs and place them
within the regions I want? Do you know a better method to calculate the
SNR?
Thank you in advance.
Best regards,
Marina