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CEST-MRF determined amide and semi-solid proton chemical exchange rates (k) and volume fractions (f) for gray (GM) and white matter (WM) regions of in vivo rat brain tissue.
| Cortical GM | Subcortical WMa | |
|---|---|---|
| Amide ksw (Hz) | 34.8±11.7 | 47.9±11.6 |
| Amide fs (%) | 0.61±0.13 | 0.76±0.09 |
| Semi-solid kssw (Hz) | 47.1±4.0 | 48.6±2.4 |
| Semi-solid fss (%) | 8.1±1.1 | 12.2±1.7 |
average of corpus callosum and internal capsule
