Every movement of the contrast dye during a Hysterosalpingogram (HSG) provides valuable diagnostic information. As the dye fills the uterine cavity and travels through the fallopian tubes, it creates a clear outline of the reproductive tract under X-ray guidance. Uninterrupted flow through the tubes, with the dye spilling from the fimbrial ends, indicates that the passage is open. When the dye cannot progress beyond a certain point, it may reveal a blockage that could be contributing to infertility. By visualising the reproductive tract in real time, HSG plays an important role in investigating fertility concerns and guiding appropriate treatment. To learn more about HSG, visit our website here.