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==Fetal Crown-Rump Length Graph==
==Fetal Crown-Rump Length Graph==


This simplified  fetal growth curve shows a constant and continual growth in fetal length through second and third trimester.
'''Crown-Rump Length''' - (CRL) measurement used in embryology to more accurately stage the early embryo and fetus. Measured from the curvature at the top (crown) to the curvature at the bottom (rump) of the "C-shaped" early embryo. Used in clinical [[ultrasound]] as a measurement between the periods of 7 to 13 weeks as an accurate estimation of the gestational age {{GA}}.
{{Fetal Graphs}}
===Data===
{{Human fetal length-weight table}}
See also the historic Keibel and Mall (1910) [[Book_-_Manual_of_Human_Embryology_8|VIII. Determination of the Age of Human Embryos and Fetuses]] graphs - [[:File:Keibel_Mall_145.jpg|Fig. 145. Human Embryo and Fetal Lengths]] and [[:File:Keibel_Mall_148.jpg|Fig. 148. Human Embryo and Fetal Lengths]].
===Ultrasound Data===
The collapsed table below shows measurement data from a recent [[ultrasound]] study.
{{FA-GA-CRLCollapse Table}}


===References===
===References===
<pubmed>2361065</pubmed>
{{#pmid:2361065}}
<pubmed>12548377</pubmed>
 
<pubmed>16891202</pubmed>
{{#pmid:12548377}}
 
{{#pmid:16891202}}


[[Category:Human]] [[Category:Fetal]] [[Category:Second Trimester]] [[Category:Third Trimester]] [[Category:Graph]]
[[Category:Human]] [[Category:Fetal]] [[Category:Second Trimester]] [[Category:Third Trimester]] [[Category:Graph]]

Latest revision as of 14:47, 26 May 2019

Fetal Crown-Rump Length Graph

This simplified fetal growth curve shows a constant and continual growth in fetal length through second and third trimester.

Crown-Rump Length - (CRL) measurement used in embryology to more accurately stage the early embryo and fetus. Measured from the curvature at the top (crown) to the curvature at the bottom (rump) of the "C-shaped" early embryo. Used in clinical ultrasound as a measurement between the periods of 7 to 13 weeks as an accurate estimation of the gestational age GA.


Fetal Graphs: Crown-Rump Length (CRL) | Third trimester CRL | Head Circumference | Head Circumference 2nd Trimester | Liver Weight | Pancreas Weight | Thymus Weight | Small Intestine Length | Large Intestine Length | Length and Weight Changes | Fetal Development

Data

Fetal Development - Length - Weight
Gestational age Fertilization age Length Mass
(LMP) (GA weeks) (weeks) (cm) (g)
8 (embryonic) 6 1.6 (crown to rump) 1
9 7 2.3 2
10 8 3.1 4
11 (fetal) 9 4.1 7
12 10 5.4 14
13 (second trimester) 11 7.4 23
14 12 8.7 43
15 13 10.1 70
16 14 11.6 100
17 15 13 140
18 16 14.2 190
19 17 15.3 240
20 18 16.4
25.6 (crown to heel)
300
21 19 26.7 360
22 20 27.8 430
23 21 28.9 501
24 22 30 600
25 23 34.6 660
26 24 35.6 760
27 25 36.6 875
28 (third trimester) 26 37.6 1005
29 27 38.6 1153
30 28 39.9 1319
31 29 41.1 1502
32 30 42.4 1702
33 31 43.7 1918
34 32 45 2146
35 33 46.2 2383
36 34 47.4 2622
37 35 48.6 2859
38 36 49.8 3083
39 37 50.7 3288
40 38 51.2 3462
41 39 51.7 3597
42 40 51.5 3685
References [1][2][3]


See also the historic Keibel and Mall (1910) VIII. Determination of the Age of Human Embryos and Fetuses graphs - Fig. 145. Human Embryo and Fetal Lengths and Fig. 148. Human Embryo and Fetal Lengths.

Ultrasound Data

The collapsed table below shows measurement data from a recent ultrasound study.

Fertilization and Gestational Age - Crown-Rump Length (ultrasound
Fertilization Age
(days)
Gestational Age
GA (week.day)
Crown-Rump
Length (mm)
37 5.2 1
38 5.3 2
39 5.4 3
40 55 3
41 5.6 4
42    Week 4 6 4
43 6.1 5
44 6.2 6
45 6.3 7
46 6.4 8
47 6.5 9
48 6.6 10
49    Week 5 7 11
50 7.1 11
51 7.2 12
52 7.3 12
53 7.4 13
54 7.5 14
55 7.6 15
56    Week 6 8 17
57 8.1 18
58 8.2 19
59 8.3 20
60 8.4 21
61 8.5 22
62 8.6 22
63    Week 7 9 23
64 9.1 24
65 9.2 26
66 9.3 27
67 9.4 28
68 9.5 29
69 9.6 31
70    Week 8 10 34
71 10.1 36
72 10.2 37
73 10.3 38
74 10.4 39
75 10.5 39
76 10.6 40
77    Week 9 11 44
78 11.1 45
79 11.2 47
80 11.3 48
81 11.4 52
82 11.5 55
83 11.6 56
84    Week 10 12 57
85 12.1 58
86 12.2 60
87 12.3 61
88 12.4 63
89 12.5 64
90 12.6 65
91    Week 11 13 68
92 13.1 70
93 13.2 72
94 13.3 74
95 113.4 76
96 135 77
97 13.6 80
98    Week 12 14 81
99 14.1 84
100 14.2 85
101 14.3 86
102 14.4 87
Reference: Table data measured by ultrasound, adapted from Westerway (2015) PDF and[4]
Links: ultrasound | Fetal Development

References

Cussen L, Scurry J, Mitropoulos G, McTigue C & Gross J. (1990). Mean organ weights of an Australian population of fetuses and infants. J Paediatr Child Health , 26, 101-3. PMID: 2361065

Hansen K, Sung CJ, Huang C, Pinar H, Singer DB & Oyer CE. (2003). Reference values for second trimester fetal and neonatal organ weights and measurements. Pediatr. Dev. Pathol. , 6, 160-7. PMID: 12548377 DOI.

Archie JG, Collins JS & Lebel RR. (2006). Quantitative standards for fetal and neonatal autopsy. Am. J. Clin. Pathol. , 126, 256-65. PMID: 16891202 DOI.

  1. Cussen L, Scurry J, Mitropoulos G, McTigue C & Gross J. (1990). Mean organ weights of an Australian population of fetuses and infants. J Paediatr Child Health , 26, 101-3. PMID: 2361065
  2. Hansen K, Sung CJ, Huang C, Pinar H, Singer DB & Oyer CE. (2003). Reference values for second trimester fetal and neonatal organ weights and measurements. Pediatr. Dev. Pathol. , 6, 160-7. PMID: 12548377 DOI.
  3. Archie JG, Collins JS & Lebel RR. (2006). Quantitative standards for fetal and neonatal autopsy. Am. J. Clin. Pathol. , 126, 256-65. PMID: 16891202 DOI.
  4. Westerway SC, Davison A & Cowell S. (2000). Ultrasonic fetal measurements: new Australian standards for the new millennium. Aust N Z J Obstet Gynaecol , 40, 297-302. PMID: 11065037

File history

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Date/TimeThumbnailDimensionsUserComment
current02:51, 1 June 2011Thumbnail for version as of 02:51, 1 June 2011972 × 648 (72 KB)S8600021 (talk | contribs)
15:16, 11 October 2009Thumbnail for version as of 15:16, 11 October 2009600 × 444 (35 KB)S8600021 (talk | contribs)Fetal length change is greatest in the middle period (second trimester).