![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)
Mean Sac Diameter (MSD]. Three measurements of the gestational sac (length, depth, and width) are obtained, sum… | Gestational age, Medical ultrasound, Ultrasound
![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/m685/springer-static/image/art%3A10.1038%2Fs41598-020-58114-3/MediaObjects/41598_2020_58114_Fig1_HTML.png)
Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model | Scientific Reports
![Normal and Abnormal US Findings in Early First-Trimester Pregnancy: Review of the Society of Radiologists in Ultrasound 2012 Consensus Panel Recommendations | RadioGraphics Normal and Abnormal US Findings in Early First-Trimester Pregnancy: Review of the Society of Radiologists in Ultrasound 2012 Consensus Panel Recommendations | RadioGraphics](https://pubs.rsna.org/cms/10.1148/rg.2015150092/asset/images/medium/rg.2015150092.fig14a.gif)
Normal and Abnormal US Findings in Early First-Trimester Pregnancy: Review of the Society of Radiologists in Ultrasound 2012 Consensus Panel Recommendations | RadioGraphics
![Low lying gestation sac in early pregnancy-an algorithmic approach with ultrasound markers - MedCrave online Low lying gestation sac in early pregnancy-an algorithmic approach with ultrasound markers - MedCrave online](https://medcraveonline.com/OGIJ/images/OGIJ-11-00496-g001.png)
Low lying gestation sac in early pregnancy-an algorithmic approach with ultrasound markers - MedCrave online
![Appendix 2: Low gestational sac in the first trimester with previous caesarean section | New Zealand Obstetric Ultrasound Guidelines | Ministry of Health NZ Appendix 2: Low gestational sac in the first trimester with previous caesarean section | New Zealand Obstetric Ultrasound Guidelines | Ministry of Health NZ](https://www.health.govt.nz/sites/default/files/images/our-work/maternity/ultrasound/imagea2-1-a.jpg)
Appendix 2: Low gestational sac in the first trimester with previous caesarean section | New Zealand Obstetric Ultrasound Guidelines | Ministry of Health NZ
![Pregnancy #2: I saw an empty gestational sac on my first scan ⋆ Budgetpantry | Singapore Mummy Blog on Food, Recipe & Baby Pregnancy #2: I saw an empty gestational sac on my first scan ⋆ Budgetpantry | Singapore Mummy Blog on Food, Recipe & Baby](https://budgetpantry.com/wp-content/uploads/2019/06/5w6d.jpeg)
Pregnancy #2: I saw an empty gestational sac on my first scan ⋆ Budgetpantry | Singapore Mummy Blog on Food, Recipe & Baby
![Termination of pregnancy at very early gestation without visible yolk sac on ultrasound | BMJ Sexual & Reproductive Health Termination of pregnancy at very early gestation without visible yolk sac on ultrasound | BMJ Sexual & Reproductive Health](https://srh.bmj.com/content/familyplanning/41/2/90/F1.large.jpg)