PROCÉDÉ PERMETTANT D'ESTIMER DES DÉBITS D'ÉCOULEMENT, DES GRADIENTS DE PRESSION, UNE RÉSERVE DE DÉBIT CORONAIRE ET UNE RÉSERVE DE DÉBIT FRACTIONNAIRE À PARTIR DE DONNÉES DE DISTRIBUTION DE CONTRASTE BASÉES SUR UN ANGIOGRAMME DE PATIENT DE TOMODENSITOMÉTRIE SPÉCIFIQUE AU PATIENT
An embodiment in accordance with the present invention provides a method for non-invasively determining the functional severity of coronary artery stenosis. The method includes gathering patient-specific data related to concentration of a contrast agent within a coronary artery of a patient using a coronary computed tomography angiography scan (CCTA). The patient-specific data is used to calculate a patient-specific transluminal attenuation gradient for the coronary artery of the patient. The patient specific transluminal attenuation gradient is used to determine an estimate of a coronary flow velocity, pressure gradient, loss coefficient, coronary flow reserve, and/or fractional flow reserve for the patient. Coronary flow velocity, pressure gradient, loss coefficient, coronary flow reserve, and fractional flow reserve can then be used to estimate the functional severity of coronary artery stenosis.
