Le Mignon, M M Preliminary European intravenous clinical experience with a new, low osmolar, nonionic contrast medium: ioversol (Optiray). [electronic resource] - European journal of radiology - 126-33 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0720-048X Standard No.: 10.1016/0720-048x(91)90094-c doi Subjects--Topical Terms: AdultAngiography, Digital SubtractionContrast Media--adverse effectsDouble-Blind MethodEuropeHumansMiddle AgedPhlebographyTomography, X-Ray ComputedTriiodobenzoic Acids--adverse effectsUrography