FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to a contrast agent in the form of an aqueous solution for magnetic resonant tumour diagnosis. The agent represents sulpho-substituted phthalocyanine metal complex sodium salt in the form of a mixture of manganese and gadolinium complex sulpho-acids of different degrees of sulphatation (di, tri and tetra) and average substitution n=2.5-3, containing sulphogroups both in position 3, and in position 4 of a phthalocyanine ring and described by the following formula: 
. In the specified formula, R=H or SO3Na, M=Mn or Gd, X=CH3COO.
EFFECT: invention provides a higher contrast of magnetic resonant diagnostic tumour images.
2 cl, 2 dwg, 4 ex
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