PROCÉDÉ POUR DÉTERMINER UNE VALEUR SANGUINE CARACTÉRISTIQUE, DISPOSITIF DE TOMOGRAPHIE ASSISTÉE PAR ORDINATEUR, PROGRAMME INFORMATIQUE ET SUPPORT D'INFORMATIONS LISIBLE ÉLECTRONIQUEMENT
Method for determining at least one first characteristic value of blood in a patient, the at least one first characteristic value describing the iron content of the blood, characterised in that- in a computed tomography device (17), computed tomography data of the patient for at least two energy levels of radiation is acquired using multi energy computed tomography,- a region of interest (2) comprising blood is defined in at least one image data set reconstructed from the computed tomography data,- at least in the region of interest (2), attenuation coefficients are determined for each energy level,- material decomposition into at least two materials, one material being iron, is performed using the attenuation coefficients, yielding at least a fraction of iron in the region of interest (2), and- the first characteristic value is determined as and/or from the iron fraction.
