Table 2.
Means (SD) for tissue composition and spectral quality in the mPFC region in first-episode schizophrenia (FES), subjects at ultrahigh risk for psychosis (UHR), and healthy controls (HC).
| Group | Tissue composition | Spectral quality | |||
|---|---|---|---|---|---|
| CSF fraction | GM fraction | WM fraction | FWHM (ppm) | SNR | |
| HC | 0.12 (0.030) | 0.56 (0.032) | 0.32 (0.049) | 0.11 (0.04) | 22.43 (5.13) |
| UHR | 0.12 (0.028) | 0.56 (0.038) | 0.31 (0.046) | 0.11 (0.03) | 21.90 (4.29) |
| FES | 0.11 (0.027) | 0.56 (0.040) | 0.32 (0.047) | 0.11 (0.02) | 20.81 (3.12) |
GM: grey matter; WM: white matter; CSF: cerebrospinal fluid; FWHM: full-width at half maximum; SNR: signal-to-noise ratios.