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SNR for perfusion‐weighted (ΔM) signal within the whole brain GM ROI (thresholded at PVEGM > 70%)
| Participants | SNR ΔM GM | CoV ΔM GM |
|---|---|---|
| Young (N = 3) | ||
| Scanner I | 8.9 ± 0.4 | 30.3 ± 0.3 % |
| Scanner II | 18.6 ± 1.4 | 25.1 ± 0.9 % |
| Elderly (N = 29) | ||
| Scanner I | 5.9 ± 1.1 | 36.9 ± 2.2% |
