1. A method of imaging a body cavity, comprising: (a) introducing into a body cavity an aliquot of echo-lucent image enhancing composition having a pH between 5.5 to 7.5 and a viscosity between 2000 to 4000 mPa·sec at room temperature wherein the composition consists essentially of hydroxyethylcellulose and/or methylcellulose, glycerin and a buffer; and (b) imaging the body cavity to produce an image.