The invention pertains to an echolucent image enhancing hydrophobic, water-immiscible composition, wherein the composition turns echogenic when foamed with air or gas bubbles formed from mechanically inserting (i) air or gas； or (ii) aqueous solution with air or gas into the hydrophobic, water-immiscible composition. The invention also pertains to a foamed echogenic image enhancing hydrophobic, water-immiscible composition and optionally comprising aqueous solution forming a single-phase, said composition comprising air or gas bubbles retained in the composition, and wherein the volume ratio of aqueous solution: hydrophobic, water-immiscible composition is preferably in the range of between 0: 100 (i.e. no aqueous solution) and 75:25, preferably between 0: 100 and 60:40.
