Hysterosalpingo-Contrast Sonography With Four-Dimensional Technique for Screening Fallopian Tubal Patency: Let's Make an Exploration

A 4D technique combined with HyCoSy is a practicable screening method for assessing fallopian tube patency. It overcomes the disadvantages of 2D-HyCoSy and has a relatively high degree of agreement with the more difficult 2D-HyCoSy technique.