Medical Ultrasound Imaging Abbreviations - G 1 - 3 (of 3) •GA-GS • GA Gestational Age • GI Gastro-Intestinal • GS Gestational Sac 1 - 3 (of 3) •GA-GS Save a little money each month and at the end of the year you'll be surprised at how little you have. - Ernest Haskins |