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Per-oral negative contrast agent for abdominal CT
Per-oral negative contrast agent for abdominal CT
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机译:腹部CT口部阴性造影剂
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摘要
An edible negative contrast agent for CT imaging of the gastrointestinal tract intended for oral intake. The contrast agent is a fluid, aqueous foam displaying a CT density contrast value in the range -300 to -800 HU and having a consistency of 7 to 12 cm as measured with Bostwick consistometer. The contrast agent comprises an aqueous continuous liquid phase having a pH of 6.5 to 8.0 and gas bubbles dispersed in the continuous aqueous liquid phase. The aqueous continuous liquid phase comprises a surfactant, the surfactant being a protein, a hydrocolloid acting as foam stabilizer, a buffering agent, and water.
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