Tissue Class | Premature Infants ≤26 wk (Range: 23–26 wk; n = 37) | Premature Infants ≥27 wk (Range: 27–32 wk; n = 82) | P Value (t Test) |
---|---|---|---|

Cortical GM, mL | 166 ± 42 | 178 ± 41 | .9 |

Deep nuclear GM, mL | 7.4 ± 3.7 | 12.3 ± 4.2 | <.01 |

Cerebrospinal fluid, mL | 53.2 ± 26.1 | 38.8 ± 18.8 | .01 |

Total ICV, mL | 448 ± 61 | 463 ± 59 | .7 |

Cerebral tissues, total, mL | 386 ± 60 | 419 ± 57 | .06 |