The present invention relates to a method for determining patient-specific blood vessel information. More specifically, the present invention relates to a method for determining patient-specific cardiovascular information by applying a simplified coronary circulation model thereto. Furthermore, the present invention relates to a method for determining a blood flow rate for branches of a blood vessel having originated from an artery of each patient. According to the present invention, the method for determining cardiovascular information by using a computer system comprises the steps of: receiving image data including a plurality of coronary arteries having originated from the aorta； processing the image data so as to generate a three-dimensional shape model of the plurality of coronary arteries； simulating a blood flow for the generated three-dimensional shape model of the plurality of coronary arteries； and determining a fractional flow reserve (FFR) of the respective coronary arteries with the blood flow simulation result. In the blood flow simulation step for the three-dimensional shape model of the plurality of coronary arteries, a computational fluid dynamics model is applied to the three-dimensional shape model of the coronary arteries, and a centralized parameter model to be combined with the computational fluid dynamics model uses a simplified coronary circulation model including coronary arteries, capillaries of the coronary arteries, and coronary veins.La présente invention concerne une méthode de détermination d'informations de vaisseau sanguin spécifiques à un patient. Plus particulièrement, la présente invention concerne une méthode permettant de déterminer des informations cardiovasculaires spécifiques à un patient par application, à ce dernier, d'un modèle de circulation coronaire simplifié. En outre, la présente invention concerne une méthode de détermination d'un débit sanguin de ramifications d'un vaisseau sanguin prenant son origine dans une artèr
