What are the common methods to evaluate the Fallopian tubes?
The most common methods for investigating tubal patency include X-ray hysterosalpingography (HSG), and hysterosalpingo-contrast sonography (HyCoSy). HSG is the traditional method. HyCoSy and, later on, HyFoSy (using foam gel as contrast) were introduced as an alternative to HSG, thereby avoiding exposure to the risks of iodine allergy or X-Ray radiation. These are ultrasound-based techniques that allow to detect abnormalities of fallopian tubes in real-time, and safer for the patient.