“…Isolated previous case reports or small series have high lighted the ability of various alternative coupling agents to provide image quality or physical transmissibility equivalent to CUG. 1,28–36 These agents have included normal saline, 28,30,31,36 water, 29,33 mineral oil, 1,33 petrolatum, 33 5% dextrose in water, 32 povidone-iodine (Betadine, Purdue Products LP), 34 olive oil, 35 and various medication creams or gels. 1 Some reports covered the probe.…”