Contrast-Loaded Gelatin Spherules

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Abstract
Sphere-shaped gelatin particles, 0.5-3.5 mm in diameter, containing 65% W/V water-soluble contrast material, have been applied in a cinefluorographic model and animal experiments. This new particulate contrast medium has useful nonembolic properties for motion analysis in the living blood stream. Physical data obtained and the technique of production are described. It is concluded that gelatin spheres carrying a medium have proved practical as a particulate contrast material in experimental radiologic studies.