Uterine Elastography: a Potential Predictor of Embryo Transfer Success

Inclusion Criteria: 1. Female patients, 18yo-45yo, presenting for ultrasound the day prior to embryo transfer 2. Patients planning to undergo single embryo transfer (SET) of a euploid embryo by Preimplantation genetic testing for aneuploidy (PGT-A) 3. Uterine evaluation prior to transfer (saline sonogram or hysteroscopy) within 1 year 4. Egg recipients Exclusion Criteria: 1. Gestational carriers 2. BMI \> 35 3. Diagnosis of a uterine anomaly 4. History of uterine surgery, excluding polypectomy, c-section, D\&C 5. Communicating hydrosalpinx 6. Transfer of an embryo of unknown ploidy status or embryos of undetermined safety 7. Surgically retrieved sperm 8. Embryos that were cryopreserved on day 7 of development 9. Poor quality embryos defined by modified Gardner grading criteria used in the embryology lab 10. Sonographically abnormal appearing uteri, including distortions from leiomyomas and thin endometrium