The invention pertains to a foamed aqueous image enhancing composition containing cellulose and/or cellulose derivative(s), said composition having a pH between 5.5 and 7, wherein the viscosity of the composition is less than 1800 mPa·sec, and wherein a gas is maintained in the composition for at least 1 minute after preparation. The combination of low viscosity and foam stability makes the composition particularly suitable in patency tests and fallopian tube sterilization checks.
