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. Author manuscript; available in PMC: 2017 Feb 3.
Published in final edited form as: Front Phys. 2014 Feb 11;2:00001. doi: 10.3389/fphy.2014.00001

Figure 3. Improving image SNR (left) and time-series SNR (right) via faster scanning.

Figure 3

Although SNR per slice or volume is lower at lower TR, SNR per unit time is increasing due to more efficient scanning, as compared to TR = 1800 ms. Furthermore, time series SNR is also improving, depending however on the brain region or ROI chosen (motor, motor cortex; visual, visual cortex; amy, amygdala; wm, white matter; csf, cerebrospinal fluid; bs, brain stem). Note that while tSNR is increased compared to standard EPI when using a multiband factor of 4, it is however, decreased at a multiband factor of 8.