HSG is an x-ray exam of the uterus and fallopian tubes. It uses a special form of x-ray called fluoroscopy and a contrast material.

An x-ray exam helps doctors diagnose and treat medical conditions. It exposes you to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most often used form of medical imaging.

Your doctor uses fluoroscopy to see your internal organs in motion. Your doctor will fill your uterus and fallopian tubes with a water-soluble contrast material. Your radiologist will then use fluoroscopy to view and assess them.