| 28 jul 2004 | | 0 | 0 | | | | | | | | | |
| 4 aug 2004 | 1 | | | | | | | | | |
| 11 aug 2004 | 2 | | | | | | | | | |
| 18 aug 2004 |  | 3 | | < 1 | < 1 | | | | | | |
| 25 aug 2004 | | 4 | | < 1 | < 1 | | | | | | |
| 1 sep 2004 | | 1 | 5 | 0 | < 1 | < 1 | | | | | | |
| | 1 | < 1 | | | | | | | |
| 2 | 1 | | | | | | | |
| 3 | 2 | | | | | | | |
| 4 | 3 | | | | | | | |
| 5 | 3 | | | | | | | |
| 6 | 4 | | | | | | | |
| 8 sep 2004 | | 6 | 0 | 4 | < 1 | | | | | | |
| | | 1 | 5 | | | | | | | |
| | 2 | 6 | | | | | | | |
| 3 | 7 | | | | | | | |
| 4 | 8 | | | | | | | |
| 5 | 9 | | | | | | | |
| 6 | 10 | | | | | | | |
| 15 sep 2004 | | 7 | 0 | 11 | < 1 | | | | | | |
| | 1 | 11 | | | | | | | |
| 2 | 12 | | | | | | | |
| 3 | 12 | | | | | | | |
| 4 | 13 | | | | | | | |
| 5 | 14 | | | | | | | |
| 6 | 15 | | | | | | | |
| 22 sep 2004 | | 8 | 0 | 17 | 1 | | | | | | |
| | 1 | 18 | | | | | | | |
| 2 | 19 | | | | | | | |
| 3 | 20 | | | | | | | |
| 4 | 21 | | | | | | | |
| 5 | 22 | | | | | | | |
| 6 | 22 | | | | | | | |
| 29 sep 2004 | | 2 | 9 | 0 | 23 | 2 | | | | | | |
| | 1 | 24 | | | | | | | |
| 2 | 26 | | | | | | | |
| 3 | 27 | | | | | | | |
| 4 | 28 | | | | | | | |
| 5 | 29 | | | | | | | |
| 6 | 31 | | | | | | | |
| 6 oct 2004 | | 10 | 0 | 34 | 4 | | | | | | |
| | | 1 | 36 | | | | | | | |
| 2 | 37 | | | | | | | |
| 3 | 38 | | | | | | | |
| 4 | 39 | | | | | | | |
| 5 | 39 | | | | | | | |
| 6 | 40 | | | | | | | |
| 13 oct 2004 | | 11 | | 44 | 7 | 16 (2.0) | 21 (2.0) | 59 (15) | 52 (10) | 8 (2.0) | 8 (3.0) |
| 20 oct 2004 | | 12 | | 57 | 14 | 20 (4.0) | 24 (2.0) | 70 (15) | 63 (10) | 10 (2.5) | 9 (2.0) |
| 27 oct 2004 | | 3 | 13 | | 68 | 23 | 24 (4.0) | 29 (3.0) | 84 (15) | 74 (10) | 11 (2.5) | 11 (3.0) |
| 3 nov 2004 | | 14 | | 81 | 43 | 28 (4.0) | 34 (3.0) | 96 (15) | 84 (10) | 15 (3.0) | 14 (4.0) |
| 10 nov 2004 | | 15 | | 96 | 70 | 31 (4.0) | 38 (3.0) | 108 (15) | 96 (10) | 17 (3.5) | 17 (5.5) |
| 17 nov 2004 | | 16 | | 111 | 100 | 36 (5.0) | 46 (3.0) | 128 (15) | 106 (10) | 22 (4.0) | 21 (4.0) |
| 24 nov 2004 | | 17 | | 127 | 140 | 39 (5.0) | 50 (3.0) | 141 (15) | 120 (15) | 25 (4.0) | 25 (5.0) |
| 1 dec 2004 | | 4 | 18 | | 138 | 190 | 42 (4.0) | 54 (3.5) | 151 (20) | 131 (15) | 28 (5.0) | 27 (5.5) |
| 8 dec 2004 | | 19 | | 149 | 250 | 45 (5.0) | 57 (3.5) | 160 (20) | 140 (15) | 30 (5.0) | 29 (5.0) |
| 15 dec 2004 | | 20 | | 161 | 265 | 47 (4.0) | 61 (3.5) | 170 (20) | 151 (15) | 32 (6.0) | 31 (5.0) |
| 22 dec 2004 | | 21 | | 256 | 375 | 49 (4.0) | 63 (4.0) | 176 (20) | 164 (20) | 34 (6.0) | 32 (6.0) |
| 29 dec 2004 | | 5 | 22 | | 267 | 480 | 52 (5.0) | 68 (3.5) | 188 (20) | 176 (20) | 37 (5.0) | 35 (6.0) |
| 5 jan 2005 | | 23 | | 278 | 550 | 57 (5.0) | 76 (4.0) | 210 (20) | 186 (20) | 43 (5.0) | 38 (4.0) |
| 12 jan 2005 | | 24 | | 289 | 640 | 60 (6.0) | 79 (4.0) | 220 (20) | 201 (20) | 45 (4.0) | 40 (6.0) |
| 19 jan 2005 | | 25 | | 302 | 770 | 64 (6.0) | 82 (4.5) | 231 (20) | 212 (20) | 48 (5.0) | 43 (5.0) |
| 26 jan 2005 | | 26 | | 346 | 880 | 67 (4.0) | 84 (4.5) | 238 (20) | 223 (25) | 49 (5.0) | 44 (4.0) |
| 2 feb 2005 | | 6 | 27 | | 356 | 1015 | 68 (5.0) | 86 (4.5) | 250 (20) | 230 (25) | 50 (5.0) | 47 (4.0) |
| 9 feb 2005 | | 28 | | 366 | 1160 | 72 (4.0) | 95 (5.0) | 263 (20) | 242 (25) | 54 (4.0) | 50 (5.0) |
| 16 feb 2005 | | 29 | | 386 | 1315 | 75 (4.0) | 97 (5.5) | 269 (25) | 259 (25) | 55 (5.5) | 51 (5.0) |
|
23 feb 2005 | | 30 | | 399 | 1495 | 76 (4.0) | 98 (5.5) | 274 (25) | 262 (25) | 58 (6.0) | 52 (5.0) |
| | 1550 | 81.3 | | 282.4 | 256.6 | 58.4 | |
| 2 mar 2005 | | 7 | 31 | | 414 | 1650 | 80 (6.0) | 101 (5.0) | 284 (25) | 272 (30) | 59 (5.5) | 54 (5.0) |
| 9 mar 2005 | | 32 | | 424 | 1810 | 81 (4.0) | 102 (5.0) | 288 (25) | 283 (30) | 62 (6.0) | 56 (5.0) |
| | | 88.7 | | 297.9 | 284.8 | 60.9 | |
| 16 mar 2005 | | 33 | | 437 | 1990 | 84 (6.0) | 107 (5.5) | 300 (25) | 294 (30) | 65 (4.0) | 57 (6.0) |
| 23 mar 2005 | | 34 | | 449 | 2150 | 86 (6.0) | 108 (5.5) | 305 (25) | 305 (30) | 66 (4.0) | 59 (5.5) |
| 30 mar 2005 | | 35 | | 462 | 2330 | 88 (6.5) | 109 (5.5) | 310 (25) | 315 (30) | 67 (6.0) | 60 (6.0) |
| 6 apr 2005 | | 8 | 36 | | 474 | 2500 | 90 (6.0) | 112 (5.5) | 317 (25) | 325 (35) | 69 (6.0) | 62 (5.0) |
| 13 apr 2005 | | 37 | | 486 | 2675 | 92 (6.5) | 113 (6.0) | 321 (25) | 333 (35) | 72 (5.0) | 63 (6.0) |
| 20 apr 2005 | | 38 | | 498 | 2830 | 93 (6.0) | 116 (5.5) | 328 (25) | 342 (35) | 73 (5.5) | 64 (6.0) |
|
27 apr 2005 | | 39 | | 507 | 2995 | 95 (8.0) | 119 (6.0) | 336 (25) | 356 (35) | 75 (6.0) | 65 (5.5) |
05-05-2005
05:05:05 u
|  | 9 | 40 | | 512 | 3125 | 96 (8.0) | 120 (6.0) | 340 (25) | 362 (35) | 76 (4.0) | 66 (6.0) |
| 13 may 2005 | | | 41 | | 517 | 3245 | 98 (8.0) | 122 (6.0) | 344 (25) | 367 (35) | 77 (5.0) | 68 (6.0) |
| values | +/-2 standard deviations shown in brackets. Measurements without days are completed weeks. |
CRL
CHL | First 20 weeks: Crown to Rump Length
CRL = 0.5967 (GA)² – 2.1413 – 3.4966 (r² = 0.985)
GA = –0.0007 (CRL)² + 0.1584 (CRL) + 5.2876 (r² = 0.99)
After 20 weeks: Crown to Heel Length |
 | |
| Weight | |  |
| BPD | Measured on a transverse axial section of the fetal head which includes: (F) falx cerebri anteriorly and posteriorly, (CSP) cavum septum pellucidum anteriorly in the midline and (T) thalami. The BPD is measured from the outer edge of the nearer parietal bone to the inner edge of the more distant parietal bone. The OFD is measured perpendicular to the BPD.
BPD = –0.0371 (GA)² + 4.69 (GA) – 31.546 (r² = 0.969)
GA = 0.397 (BPD) – 0.00306 (BPD)² + 0.00002788 (BPD)³ + 4.933 |  | |
| OFD | The OFD is measured perpendicular to the BPD in the same section as described at BPD.
OFD = –0.0665 (GA)² + 6.8881 (GA) – 49.08 (r² = 0.963)
GA = 0.381 (OFD) – 0.00344 (OFD)² + 0.00002298 (OFD)³ + 4.189 | |
| HC | HC=(BPD+OFD)x1.57
HC = –0.1699 (GA)² + 18.494 (GA) – 127.91 (r²= 0.991)
GA = 0.0001797 (HC)² + 0.02631 (HC) + 9.667 (r² = 0.996) | |
| AC | The abdominal circumference is measured at the level of the liver and stomach, including the left portal vein at the umbilical region.
SP = spine; ST = stomach; V = umbilical vein/portal sinus
AC = –0.0469 (GA)² + 13.204 (GA) – 90.946 (r² = 0.984)
GA = 0.0000367 (AC)²+ 0.07715 (AC) + 7.192 (r² = 0.999) |  | |
| FL | The long bones are measured with the bone across the beam axis. The strong acoustic shadow behind the femoral or humeral shaft and the visualisation of both cartilaginous ends indicates that the image plane is on the longest axis and is the optimal measurement plane. The calipers are placed along the diaphyseal shaft excluding the epiphysis.
FL = –0.0004 (GA)³ + 0.0032 (GA)² + 3.1263 (GA) – 28.489 (r²= 0.974)
GA = 0.41 (FL) – 0.002884 (FL)² + 0.00003924 (FL)³+ 8.284 | |
| HL | The long bones are measured with the bone across the beam axis. The strong acoustic shadow behind the femoral or humeral shaft and the visualisation of both cartilaginous ends indicates that the image plane is on the longest axis and is the optimal measurement plane. The calipers are placed along the diaphyseal shaft excluding the epiphysis.
HL = –0.0001 (GA)³ – 0.0235 (GA)² + 3.5386 (GA) – 29.452 (r² = 0.956)
GA = 0.406 (HL) – 0.002804 (HL)² + 0.0000563 (HL)³ + 8.411 (r² = 0.999) | |
