Figure 1.
The calculated shape coefficient for PF subcortical fields
| Region | Shape coefficient |
|---|---|
| DL | 4.5 |
| DM | 6.1 |
| OL | 6.4 |
| OM | 6.5 |
Clinical characteristics of preterm infants
| Infant ID | Gestational age (weeks) | Birth weight (g) | Reason for preterm delivery | Comorbidities |
|---|---|---|---|---|
| 01 | 25 + 6 | 870 | Preeclampsia | Bronchopulmonary dysplasia |
| 02 | 26 + 2 | 920 | PROM | None |
| 03 | 27 + 1 | 980 | Spontaneous preterm labor | None |
| 04 | 26 + 0 | 860 | Spontaneous preterm labor | Hyperbilirubinemia |
| 05 | 25 + 5 | 910 | Preeclampsia | Bronchopulmonary dysplasia |
The calculated CE for the estimated volume of the DLPFC subfield
| Grid size (pixels) | Slice gap (cm) | |||
|---|---|---|---|---|
| 0.1 | 0.2 | 0.3 | ||
| 2 | CE (%) | 2.176 | 4.145 | 6.46 |
| V (mm3) | 8.428 | 8.152 | 8.316 | |
| 3 | CE (%) | 2.231 | 4.254 | 6.546 |
| V (mm3) | 8.424 | 8.154 | 8.343 | |
| 4 | CE (%) | 2.348 | 4.382 | 6.717 |
| V (mm3) | 8.480 | 8.192 | 8.352 | |
| 5 | CE (%) | 2.729 | 4.899 | 7.14 |
| V (mm3) | 8.175 | 7.900 | 8.250 | |
Recommended stereological parameters
| PFC subfield | Grid size (pixels) | Slice gap (cm) | Shape coefficient √B/√√A | CE (%) |
|---|---|---|---|---|
| DL | 4 × 4 | 0.2 | 4.5 | 4.38 |
| DM | 5 × 5 | 0.1 | 6.1 | 4.28 |
| OL | 5 × 5 | 0.3 | 6.4 | 3.92 |
| OM | 5 × 5 | 0.1 | 6.5 | 3.86 |
The calculated CE for the estimated volume of the DMPFC subfield
| Grid size (pixels) | Slice gap (cm) | |||
|---|---|---|---|---|
| 0.1 | 0.2 | 0.3 | ||
| 2 | CE (%) | 4.05 | 8.468 | 12.161 |
| V (mm3) | 7.276 | 8.016 | 8.496 | |
| 3 | CE (%) | 4.097 | 8.499 | 12.264 |
| V (mm3) | 7.290 | 8.028 | 8.505 | |
| 4 | CE (%) | 4.201 | 8.627 | 12.384 |
| V (mm3) | 7.280 | 8.032 | 8.496 | |
| 5 | CE (%) | 4.282 | 8.698 | 12.249 |
| V (mm3) | 7.325 | 8.050 | 8.550 | |
The calculated CE for the estimated volume of the OLPFC subfield
| Grid size (pixels) | Slice gap (cm) | |||
|---|---|---|---|---|
| 0.1 | 0.2 | 0.3 | ||
| 2 | CE (%) | 1.992 | 4.256 | 6.078 |
| V (mm3) | 8.592 | 8.224 | 8.208 | |
| 3 | CE (%) | 2.119 | 1.136 | 1.402 |
| V (mm3) | 8.577 | 8.190 | 8.208 | |
| 4 | CE (%) | 1.188 | 1.734 | 2.15 |
| V (mm3) | 8.640 | 8.288 | 8.256 | |
| 5 | CE (%) | 1.659 | 2.42 | 2.986 |
| V (mm3) | 8.650 | 8.300 | 8.325 | |
| 6 | CE (%) | 2.183 | 3.188 | 3.928 |
| V (mm3) | 8.640 | 8.280 | 8.316 | |
| 7 | CE (%) | 2.732 | 3.999 | 4.922 |
| V (mm3) | 8.722 | 8.330 | 8.379 | |
The calculated CE for the estimated volume of the OMPFC subfield
| Grid size (pixels) | Slice gap (cm) | |||
|---|---|---|---|---|
| 0.1 | 0.2 | 0.3 | ||
| 2 | CE (%) | 3.227 | 6.36 | 7.946 |
| V (mm3) | 6.544 | 7.064 | 7.464 | |
| 3 | CE (%) | 3.449 | 4.944 | 8.047 |
| V (mm3) | 6.831 | 7.614 | 7.479 | |
| 4 | CE (%) | 3.393 | 6.493 | 8.071 |
| V (mm3) | 6.576 | 7.072 | 7.488 | |
| 5 | CE (%) | 3.688 | 6.841 | 8.567 |
| V (mm3) | 6.550 | 7.100 | 7.500 | |
| 6 | CE (%) | 3.866 | 6.899 | 8.639 |
| V (mm3) | 6.516 | 7.056 | 7.344 | |
| 7 | CE (%) | 4.243 | 7.38 | 8.999 |
| V (mm3) | 6.468 | 6.958 | 7.350 | |