To diagnose uterus didelphys, procedure of choice is:

IOC for uterine anomalies = MRI or 3D USG Gold standard is = Laparoscopy “Today, vaginal USG, especially three dimensional ultrasound, sonohysterography and MRI are highly accurate. HSG alone can yield inaccurate result due to failure to perfuse both uterine horns on either side of a midline division and cannot reliably distinguish between bicornuate and septate uterus”