Sonosalpingography (SSG), also known as Sion test, is a diagnostic procedure primarily used for evaluating patency of fallopian tubes.It was introduced as a screening procedure for infertility investigations.It is becoming more popular among practitioners due to absence of side effects.
Under ultrasound scanning, a slow and deliberate injection of about 200 ml physiologic saline into the uterine cavity is accomplished via Foley catheter. An inflated bulb of the catheter prevents leakage of fluid outside uterine cavity. By visualizing the flow of saline along the tube and observing it as a shower at fimbrial end, tubal patency can be tested. Presence of free fluid in pouch of Douglas also confirms tubal patency.
For detecting patency of fallopian tube
Detection of submucous fibroid polyp
Detection of some intrauterine lesions
Part of infertility investigations
Investigation of amenorrhea, especially in Asherman's syndrome
Investigating repeat pregnancy losses for uterine anomalies