Systems and methods for determining blood flow characteristics using flow ratio

摘要

Embodiments include a system for determining cardiovascular information for a patient which may include at least one computer system configured to receive patient-specific data regarding a geometry of an anatomical structure of a patient; create a model representing at least a portion of the anatomical structure; create a physics-based model relating to a blood flow characteristic within the anatomical structure; determine a first blood flow rate at at least one point of interest in the model; modify the model; determine a second blood flow rate at a point in the modified model corresponding to the at least one point of interest in the model; and determine a fractional flow reserve value as a ratio of the second blood flow rate to the first blood flow rate.

主权项

1. A system for determining cardiovascular information for a patient, the system comprising:
at least one computer system configured to:
obtain a first geometric model representing at least a location of interest in a lumen of a patient's anatomy using received patient-specific data;determine a first blood flow rate within the patient's anatomy at the location of interest in the lumen of the first geometric model;receive a change in the lumen geometry of the lumen of the first geometric model;modify the first geometric model by incorporating the change in the lumen geometry of the first geometric model;determine a second blood flow rate at a location in the modified model equivalent to the location of interest of the first geometric model; and determine a blood flow characteristic of the patient by calculating a ratio of the second blood flow rate calculated from the modified model to the first blood flow rate calculated from the first geometric model.