Median, 5th, and 95th percentiles for SA measurements
| Gestational Age (wk) | Imaging Modality | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| US 2D | US 3D | MRI | |||||||
| %5 | Median | %95 | %5 | Median | %95 | %5 | Median | %95 | |
| 21 | 82.41 | 99.27 | 112.76 | 70.00 | 98.00 | 126.00 | |||
| 22 | 92.43 | 114.88 | 131.10 | 95.00 | 125.00 | 141.00 | |||
| 23 | 100.38 | 125.18 | 146.12 | 92.00 | 119.00 | 164.00 | |||
| 24 | 130.89 | 138.14 | 154.26 | 118.00 | 140.50 | 175.00 | |||
| 25 | 135.91 | 170.76 | 198.12 | 127.00 | 155.00 | 233.00 | |||
| 26 | 139.84 | 189.49 | 234.09 | 150.00 | 193.00 | 215.00 | |||
| 27 | 158.35 | 198.22 | 234.51 | 176.00 | 223.00 | 255.00 | 127.08 | 143.50 | 152.34 |
| 28 | 182.56 | 222.26 | 293.91 | 177.00 | 218.00 | 376.00 | 132.66 | 157.32 | 176.64 |
| 29 | 215.82 | 246.64 | 293.68 | 199.00 | 235.00 | 319.00 | 140.89 | 175.90 | 204.92 |
| 30 | 228.12 | 255.40 | 282.77 | 223.00 | 286.00 | 330.00 | 170.35 | 196.48 | 251.86 |
| 31 | 240.25 | 268.21 | 299.06 | 219.00 | 298.00 | 355.00 | 181.44 | 214.24 | 239.03 |
| 32 | 241.17 | 282.90 | 330.94 | 263.00 | 297.00 | 412.00 | 202.60 | 229.60 | 272.65 |
| 33 | 274.90 | 325.12 | 370.45 | 295.00 | 308.00 | 383.00 | 207.49 | 246.18 | 266.11 |
| 34 | 283.93 | 340.38 | 405.17 | 256.00 | 327.00 | 540.00 | 224.95 | 246.21 | 322.73 |
| 35 | 302.87 | 350.00 | 392.47 | 280.00 | 323.00 | 478.00 | 242.75 | 279.97 | 363.32 |
Note:—%5 indicates 5th percentile; %95, 95th percentile.