发明授权
US3956476A Barium sulfate contrast medium containing ascorbic acid, erythorbic acid or a water-soluble salt thereof 失效
含有抗坏血酸,异抗坏血酸或其水溶性盐的硫酸钡造影剂

Barium sulfate contrast medium containing ascorbic acid, erythorbic acid
or a water-soluble salt thereof
摘要:
An aqueous barium sulfate contrast medium which comprises barium sulfate, carbon dioxide, a suspending agent and an additive selected from the group consisting of ascorbic acid, erythorbic acid and a water-soluble salt thereof, the barium sulfate concentration being at least 750 grams per liter of the medium, the carbon dioxide concentration being 0.2 to 4 gas volumes and the additive concentration being in the range of 1 mg% to 150 mg% is disclosed.
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