![Grazie Pozo Christie, M.D. on Twitter: "Scenes from my day job: CRL means Crown-Rump-Length. Meaning top of fetal head to his or her little bottom. 0.7 cm, yes, that TINY. We know, Grazie Pozo Christie, M.D. on Twitter: "Scenes from my day job: CRL means Crown-Rump-Length. Meaning top of fetal head to his or her little bottom. 0.7 cm, yes, that TINY. We know,](https://pbs.twimg.com/media/Da00wz8VMAAvwnD.jpg)
Grazie Pozo Christie, M.D. on Twitter: "Scenes from my day job: CRL means Crown-Rump-Length. Meaning top of fetal head to his or her little bottom. 0.7 cm, yes, that TINY. We know,
Chinese Fetal Biometry: Establishment of a Formula for Calculating Gestational Age based on Crown– Rump Length Measurements
![Fetal crown–rump length and estimation of gestational age in an ethnic Chinese population - Sahota - 2009 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library Fetal crown–rump length and estimation of gestational age in an ethnic Chinese population - Sahota - 2009 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library](https://obgyn.onlinelibrary.wiley.com/cms/asset/c2093dc2-931d-442d-8dd7-0cd3a8354412/mfig001.gif)
Fetal crown–rump length and estimation of gestational age in an ethnic Chinese population - Sahota - 2009 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library
![PDF) Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation PDF) Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation](https://www.researchgate.net/publication/230659333/figure/tbl1/AS:667188495147023@1536081541635/Continued_Q320.jpg)
PDF) Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation
![Table 5 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar Table 5 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/7f076cb4fbb454ab3e49c3336b9ad339ba7f6a87/13-Table5-1.png)
Table 5 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar
![Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/eff390f7d96174a8324cac4b338b1303fbaf925d/4-Table4-1.png)
Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar
![Table 8 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar Table 8 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/7f076cb4fbb454ab3e49c3336b9ad339ba7f6a87/14-Table6-1.png)
Table 8 from New first trimester crown-rump length's equations optimized by structured data collection from a French general population | Semantic Scholar
![Evaluation of Gestation: Overview, Clinical Methods of Estimating Gestational Age, Estimating the Delivery Date Evaluation of Gestation: Overview, Clinical Methods of Estimating Gestational Age, Estimating the Delivery Date](https://img.medscapestatic.com/pi/meds/ckb/53/14353tn.jpg)
Evaluation of Gestation: Overview, Clinical Methods of Estimating Gestational Age, Estimating the Delivery Date
![Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/eff390f7d96174a8324cac4b338b1303fbaf925d/4-Table4-2.png)
Table 4 from Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation | Semantic Scholar
![MetroHealth Emergency Ultrasound on Twitter: "1. CRL is the most accurate measure of gestational age in early pregnancy. Accuracy decreases outside the 1st trimester as neck flexion can change the CRL measurement. MetroHealth Emergency Ultrasound on Twitter: "1. CRL is the most accurate measure of gestational age in early pregnancy. Accuracy decreases outside the 1st trimester as neck flexion can change the CRL measurement.](https://pbs.twimg.com/media/E8bVWeUXIIwsmKR.jpg)
MetroHealth Emergency Ultrasound on Twitter: "1. CRL is the most accurate measure of gestational age in early pregnancy. Accuracy decreases outside the 1st trimester as neck flexion can change the CRL measurement.
![New crown–rump length curve based on over 3500 pregnancies - Pexsters - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library New crown–rump length curve based on over 3500 pregnancies - Pexsters - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library](https://obgyn.onlinelibrary.wiley.com/cms/asset/603aab34-fd16-4aa2-825b-f06322377e7f/mfig003.jpg)
New crown–rump length curve based on over 3500 pregnancies - Pexsters - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library
![Which fetal growth charts should be used? A retrospective observational study in China | Chinese Medical Journal Which fetal growth charts should be used? A retrospective observational study in China | Chinese Medical Journal](https://mednexus.org/cms/asset/11e29f6d-0a7f-43fd-a84a-88e36fd546f4/cm9.0000000000002335.png)