Introduction
trauma
CAVITY, BLIND
Most aspects of in-vitro fertilisation (IVF) have developed and changed dramatically since their introductionThe clinical touch technique (CTT), due to the blind nature of the procedure, can lead to inadvertent trauma with the catheter disrupting the endometriumIn 2016, a Cochrane review (n = 5859) demonstrated that transabdominal (TA) two-dimensional (2D) ultrasound guided embryo transfers (UGET) led to an increased LBR compared with the CTT (OR 1.47, 95% CI 1.30 to 1.65; 13 trials; n = 5859 women; ITA three-dimensional (3D) ultrasound has been shown to confirm correct placement of a trial catheter prior to ET in a feasibility study, but authors did not subsequently perform the ETs under ultrasound guidance4D ultrasound allows for a real-time 3D view of the uterine cavity, which negates the delays that repetitive 3D sweeps would require, whilst still obtaining the improved spatial awareness of 3D imaging of the uterine cavityMaximal implantation potential point.The primary aim of this project was to determine if 4D UGETs result in higher CPR, when compared with the CTT.