Fig. 1From: A novel food-based negative oral contrast agent compared with two conventional oral contrast agents in abdominal CT: a three-arm parallel blinded randomised controlled single-centre triala Freshly prepared Lumentin 44 (L44) poured into a glass. b Optical microscopy image of L44, ready to be administered, which consists of spherical air micro-bubbles dispersed in an aqueous phase that contains protein as foaming agent, stabiliser, buffer agent, and flavouringBack to article page