FIELD: medicine.
SUBSTANCE: invention can be used for tumor visualisation using hyperpolarisable 13C-pyruvate as magnetic resonance imaging agent, which can distinguish healthy tissue from tumor tissue. The following shall be performed: a) acquisition of direct 13C-MP images of 13C-pyruvate and its 13C-containing metabolites of alanine and lactate in the patient previously injected with composition containing hyperpolarisable 13C-pyruvate, b) correcting lactate signal with respect to quantity of pyruvate and/or alanine with acquisition of lactate relative to pyruvate and/or lactate relative to alanine image whereby tumor tissue is indicated by the highest signal and/or high weighted lactate signal relative to pyruvate signal and/or lactate signal relative to alanine signal in specified13C-images.
EFFECT: improved imaging accuracy when distinguishing healthy tissue from tumor tissue.
8 cl, 2 dwg, 5 ex
