Table 4.
Comparison of brain metrics between preterm and term infants.
| Pretern | Term | preterm – term differences | |||||||
|---|---|---|---|---|---|---|---|---|---|
| n | Mean | SD | n | Mean | SD | (%) | 95% CI | p | |
| Bifrontal diameter (mm) | 189 | 64 | 4.6 | 36 | 72.5 | 4.7 | −11.6 | −13.8 to −9.3 | <0.001** |
| Left Frontal height (mm) | 189 | 47.5 | 5 | 36 | 49.3 | 6 | −3.65 | −7.45 to 0.16 | 0.06 |
| Right Frontal height (mm) | 189 | 47.7 | 5.1 | 36 | 49.8 | 6.3 | −4.4 | −8.2 to −0.5 | 0.026* |
| Brain biparietal diameter (mm) | 189 | 75.1 | 5 | 36 | 85.3 | 4.6 | −10.17 | −14 to −9.8 | <0.001** |
| Bone biparietal diameter (mm) | 189 | 79.5 | 5.5 | 36 | 89.3 | 4.3 | −11.1 | −13.2 to −8.9 | <0.001** |
| Transverse cerebellar diameter (mm) | 189 | 50.8 | 3.3 | 36 | 55.6 | 2.6 | −8.7 | −10.47 to −6.9 | <0.001** |
| Fronto occipital diameter (mm) | 73* | 108.97 | 7.2 | 13 | 109.3 | 4 | −0.3 | −2.9 to 2.3 | 0.87 |
| Surface of the vermis (mm2) | 74* | 428.2 | 71 | 13 | 428.4 | 48 | −0.07 | −9.7 to 9.5 | 0.989 |
| Length of corpus callosum (mm) | 72* | 42 | 4.2 | 13 | 42 | 3.8 | −0.4 | −5.852 to 5.042 | 0.98 |
| Inter hemispheric fissure (mm) | 189 | 3.4 | 1.6 | 36 | 2.7 | 1 | + 29.2 | 14.2 to 44.2 | 0.005* |
| Extra-axial space (biparietal bone diameter – biparietal brain diameter) (mm) | 189 | 4.28 | 1.7 | 36 | 3.99 | 2.4 | + 7.2 | −9.5 to 23.9 | 0.395 |
| Third ventricle (mm) | 189 | 2.9 | 0.9 | 36 | 3 | 0.8 | 2.5 | −9.3 to 14 | 0.675 |
| Interopercular distance Left (mm) | 189 | 1.96 | 0.8 | 36 | 1.91 | 0.7 | −4.1 | −18.5 to 10.3 | 0.726 |
| Interopercular distance Right (mm) | 189 | 1.7 | 0.6 | 36 | 1.9 | 0.9 | −10.75 | −25.2 to 3.7 | 0.176 |
| Left lateral ventricle (mm) | 189 | 7 | 3.3 | 36 | 5.7 | 1.5 | + 22.3 | 2.94 to 41.7 | 0.006* |
| Right lateral ventricle (mm) | 189 | 6.5 | 2.8 | 36 | 5.8 | 1.6 | + 11.7 | −4.68 to 28.1 | 0.146 |
*
Good quality sagittal slices were not available for the entire cohort