Qianyan Song

No ORCID on file · 3 papers in corpus
observational 2026
A retrospective cohort study on the impact of gonadotropin dose on embryo quality and pregnancy outcome: identification of optimal dose range
Frontiers in medicine ·doi:10.3389/fmed.2026.1820329

OBJECTIVE: The study investigates the impact of gonadotropin (Gn) dose on embryo quality and pregnancy outcome in patients receiving controlled ovarian stimulation (COS) with antagonist regimen fertility treatment to identify the optimal do…

observational 2026
Effects of different seasons on the outcome of in vitro fertilization and embryo transfer: a retrospective cohort study
Frontiers in reproductive health ·doi:10.3389/frph.2026.1782049

OBJECTIVE: We aimed to investigate the effect of seasons on embryo quality and pregnancy outcomes among infertile patients undergoing in vitro fertilization-embryo transfer (IVF-ET)-assisted pregnancy. METHODS: We retrospectively analyzed …

observational 2026
Relationship between endometrial VFI values detected by three-dimensional power Doppler ultrasound and pregnancy outcomes in FET patients and prediction of the optimal VFI range-a retrospective cohort study
Frontiers in medicine ·doi:10.3389/fmed.2026.1786174

BACKGROUND: The relationship between the vascular flow index (VFI) of the endometrium and the pregnancy outcome in the frozen embryo transfer (FET) cycle remains controversial, and there is currently no recommended optimal range for VFI. O…