The International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) is a non-profit organization and the foremost global network of professionals specializing in ultrasound for women's health. Since publishing its first issue of the Ultrasound in Obstetrics & Gynecology (UOG) Journal and hosting its inaugural World Congress in 1991, ISUOG has expanded significantly, now supporting members in over 140 countries through education and training initiatives.