Abstract
Two water-soluble contrast media for hystero-salpingography—one with high viscosity (Perjodal H viscous) and one with low viscosity (Isopaque Amine) were compared with special reference to the development of pain in 61 patients. Patients examined with Isopaque Amine experienced significantly less pain and this contrast medium therefore is suggested as a suitable agent for hysterosalp-ingography in the investigation of sterility.