Purpose: Utilizing SlowflowHD as a measurement of endometrial and sub-endometrial blood flow in women with infertility undergoing frozen embryo transfer (FET) cycles and correlation with pregnancy outcomes.
Methods: A prospective pilot study of 99 women undergoing hormone replacement FET cycles. Ultrasounds were performed with Voluson E8 at 3-time points: day 15, day of transfer, and 11 days post transfer (T + 11).