Contrast composition for angiography

A physiologically isotonic contrast composition for angiography comprising an emulsion containing an organic iodine compound as X-ray contrast agents and a perfluorocarbon compound having oxygen carrying ability, the organic iodine compound being at least one of sodium iodomethane sulfonate, 3,5-diido-4-pyridone-N-acetic acid diethanolamine, 3,5-diido-4-pyridone-Nacetic acid-N'methylglucamine salt, sodium 3-acetylamino-2,4,6-triiodobenzoate, sodium 3-acetamido-2,4,6-triiodo-5-N-methyl acetamido benzoate, mixture of of methyl glucamine salt and sodium salt of diatriazoate, sodium-5-acetamido-N-2,4,6-triiodo-isophthalamate, methyl glucamine-5-acetamido-2,4,6-triiodoisophthalamate or 3-acetamido methyl-5-acetamide-2,4,6-triiodobenzoic acid methyl glucamine salt and methylglucamine salt of iodamine, the perfluorocarbon compound being a mixture comprising 95 to 50 parts by weight of at least one member of the group consisting of perfluorodecalin and perfluoromethyldecalines and 5 to 50 parts by weight of at least one of perfluorotripropylamine, perfluoro-N,N-dibutylmonomethylamine, perfluoro-N,N-diethylpentylamine, perfluoro-N,N-dipropylbutylamine, perfluoro-tripropylamine, perfluoro-N,N-diethylcyclohexylamine, perfluoro-N-butylpiperidine, perfluoro-N-pentylmorpholine, perfluoro-N-hexylmorpholine, perfluoro-N-heptylmorpholine, and perfluoroadamantane, the concentration of the organic iodine compound being 5 to 80% (W/V) and the concentration of the perfluoro-carbon compound being 5 to 30% (W/V), the ratio of the organic iodine compound to the perfluoro-carbon compound being from 0.17:1 to 16:1, and the perfluorocarbon compound in the emulsion having a particle size of 0.05 to 0.3.mu..