To be eligible to participate in this study, an individual must meet all of the following criteria:
1. Pregnant persons age 18-45 years
2. Single intrauterine pregnancy
3. Gestational duration: 18 - 28 weeks
You may not be if
An individual who meets any of the following criteria will be excluded from participation in this study:
1. Pregnant individuals with multi-fetal gestation (e.g., twins, triplets, etc.).
2. Pregnant individuals with suspected or known fetal anomaly, undergoing evaluation for genetic abnormality, requiring non-standard care, or diagnostic intervention.
3. Pregnant individuals with a medical or surgical history that may impact quality of ultrasound imaging:
4. Patients with serious medical comorbidities including: maternal congenital heart abnormalities; history of organ transplant; asthma exacerbation (during pregnancy); pre-eclampsia; recent mechanical trauma.
5. Use of any of the following during pregnancy: marijuana (or similar derivatives); alcohol; tobacco; methamphetamines; warfarin; isotretinoin; methotrexate; valproic acid; retinoids; oral steroids
6. Non-English speaking.
7. Participants deemed unsuitable by the investigator due to safety or data integrity.
