Reference intervals of gestational sac, yolk sac, embryonic length, embryonic heart rate at 6–10 weeks after in vitro fertil
![Table I from Automatic Gestational Age Estimation Based on Crown Rump Length and Gestational Sac | Semantic Scholar Table I from Automatic Gestational Age Estimation Based on Crown Rump Length and Gestational Sac | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/01d736e9474d5f6b8fcf9db77fd9ab61898d7416/3-TableI-1.png)
Table I from Automatic Gestational Age Estimation Based on Crown Rump Length and Gestational Sac | Semantic Scholar
![Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model | Scientific Reports Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model | Scientific Reports](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fs41598-020-58114-3/MediaObjects/41598_2020_58114_Fig3_HTML.png)
Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model | Scientific Reports
![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 3 from Size of Yolk Sac by Ultrasonography and Its Correlation with Pregnancy Outcome | Semantic Scholar Table 3 from Size of Yolk Sac by Ultrasonography and Its Correlation with Pregnancy Outcome | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/9700257e6764355f2cfc584344a8a517a8c37ee6/3-Table3-1.png)
Table 3 from Size of Yolk Sac by Ultrasonography and Its Correlation with Pregnancy Outcome | Semantic Scholar
![Transvaginal ultrasonography in first trimester of pregnancy and its comparison with transabdominal ultrasonography Transvaginal ultrasonography in first trimester of pregnancy and its comparison with transabdominal ultrasonography](https://jpbsonline.org/articles/2011/3/3/images/JPharmBioallSci_2011_3_3_329_84432_t11.jpg)
Transvaginal ultrasonography in first trimester of pregnancy and its comparison with transabdominal ultrasonography
![Mean Sac Diameter (MSD]. Three measurements of the gestational sac (length, depth, and width) are obtained, sum… | Gestational age, Medical ultrasound, Ultrasound Mean Sac Diameter (MSD]. Three measurements of the gestational sac (length, depth, and width) are obtained, sum… | Gestational age, Medical ultrasound, Ultrasound](https://i.pinimg.com/736x/47/6e/6f/476e6f94069e032cdf75fb54914aa4b4.jpg)