Method and system for patient-specific modeling of blood flow

• US 8,311,750 B2
• Filed: 11/07/2011
• Issued: 11/13/2012
• Est. Priority Date: 08/12/2010
• Status: Active Grant

• Current Assignee: Heartflow Inc.
• Original Assignee: Heartflow Inc.
• Inventors: Taylor, Charles A.
• Primary Examiner(s): Clow, Lori A
• Application Number:
  US13/291,089
• Publication Number:
  US 20120053919A1
• Time in Patent Office: 372 Days
• Field of Search: None
• US Class Current: 702/19
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Abstract

Embodiments include a system for providing patient-specific cardiovascular information using a web site. The system may include at least one computer system configured to allow a remote user to access a web site, receive patient-specific data regarding at least a portion of a geometry of an anatomical structure of the patient, and create a three-dimensional model representing at least a portion of the anatomical structure of the patient based on the patient-specific data. The at least one computer system may be further configured to determine information regarding a blood flow characteristic within the anatomical structure of the patient based on the three-dimensional model and a physiological condition of the patient, and communicate display information regarding a first three-dimensional simulation of at least the portion of the anatomical structure of the patient to the remote user using the web site. The three-dimensional simulation may include the determined information.

Claims

1. A system for providing patient-specific cardiovascular information, the system comprising:

at least one computer system configured to;

receive patient-specific imaging data regarding at least a portion of an anatomical structure of the patient;

create a three-dimensional model representing at least the portion of the anatomical structure based on the patient-specific imaging data, the three-dimensional model representing at least a portion of a plurality of coronary arteries emanating from a portion of an aorta;

determine a first fractional flow reserve for at least one of the plurality of coronary arteries based on the three-dimensional model and at least one physics-based model;

modify the three-dimensional model based on a position of an image of a stent on the three-dimensional model to form at least one modified model; and

determine a second fractional flow reserve for the at least one coronary artery based on the at least one modified model.

2. The system of claim 1, wherein the at least one computer system is further configured to:

communicate display information regarding a first three-dimensional simulation of at least the portion of the plurality of coronary arteries, the first three-dimensional simulation including the determined first fractional flow reserve; and

communicate display information regarding a second three-dimensional simulation of at least the portion of the plurality of coronary arteries, the second three-dimensional simulation including the determined second fractional flow reserve.

3. The system of claim 2, wherein:

the first three-dimensional simulation further includes the unmodified three-dimensional model; and

the second three-dimensional simulation further includes the modified three-dimensional model.

4. The system of claim 1, wherein

the three-dimensional model is modified by widening one of the plurality of coronary arteries represented by the three-dimensional model at the position of the stent image on the three-dimensional model.

5. The system of claim 1, wherein the at least one computer system is further configured to receive input from a user including the position of the stent image.

6. The system of claim 5, wherein:

the at least one computer system is further configured to;

determine first information regarding a blood flow characteristic in at least part of the anatomical structure before receiving the input from the user, and

determine second information regarding a blood flow characteristic in at least part of the anatomical structure after receiving the input from the user; and

each of the first information and the second information includes at least one of blood pressure, blood velocity or blood flow rate.

7. The system of claim 5, wherein:

the received input further includes a dimension of the stent; and

the three-dimensional model is modified based on the dimension of the stent.

8. The system of claim 5, wherein:

the at least one computer system is configured to store information regarding a plurality of stents;

the received input further includes a selection of one of the plurality of stents; and

the three-dimensional model is modified based on the information regarding the selected stent.

9. The system of claim 1, wherein the at least one computer system is configured to propose information regarding the stent image.

10. The system of claim 9, wherein:

the proposed information regarding the stent image includes at least one of the position or a dimension of the stent image; and

the three-dimensional model is modified based on the at least one of the position or the dimension of the stent image.

11. The system of claim 1, wherein the patient-specific imaging data is provided by computer tomography or magnetic resonance imaging techniques.

12. The system of claim 1, wherein the at least one computer system is further configured to communicate display information regarding a three-dimensional simulation of the stent inserted into at least one of the coronary arteries, the three-dimensional simulation including the determined second fractional flow reserve.

13. The system of claim 1, wherein:

the three-dimensional model further represents a plurality of outlets for blood flow formed by the plurality of coronary arteries;

the at least one physics-based model represents a blood flow through at least one of the plurality of outlets; and

the at least one physics-based model has less than three dimensions.

14. The system of claim 1, wherein the at least one computer system is further configured to:

allow at least one remote user to access at least one web site;

receive the patient-specific imaging data from the at least one remote user using the at least one web site; and

communicate display information regarding a first three-dimensional simulation of at least the portion of the anatomical structure of the patient, the three-dimensional simulation including at least one of the first fractional flow reserve or the second fractional flow reserve.

15. The system of claim 14, wherein the at least one computer system is further configured to:

receive the patient-specific imaging data for a plurality of patients; and

determine the first fractional flow reserve for the plurality of patients.

16. The system of claim 15, wherein the at least one computer system is further configured to allow a plurality of remote users to securely access the at least one web site.

17. The system of claim 14, wherein the at least one computer system is further configured to communicate the display information using the at least one web site.

18. The system of claim 14, wherein:

the at least one remote user includes a first remote user; and

the at least one computer system is further configured to receive input from a second remote user using the at least one web site, the received input including the position of the stent image.

19. The system of claim 14, wherein:

the at least one remote user includes a first remote user; and

the at least one computer system is further configured to communicate the display information to a second remote user.

20. A method for providing patient-specific cardiovascular information, the method comprising:

receiving, using at least one computer system, patient-specific imaging data regarding at least a portion of an anatomical structure of the patient;

creating, using the at least one computer system, a three-dimensional model representing at least the portion of the anatomical structure based on the patient-specific imaging data, the three-dimensional model representing at least a portion of a plurality of coronary arteries emanating from a portion of an aorta;

determining, using the at least one computer system, a first fractional flow reserve for at least one of the plurality of coronary arteries based on the three-dimensional model and at least one physics-based model;

modifying, using the at least one computer system, the three-dimensional model based model based on a position of an image of a stent on the three-dimensional model to form at least one modified model; and

determining, using the at least one computer system, a second fractional flow reserve for the at least one coronary artery based on the at least one modified model.

21. The method of claim 20, further comprising:

communicating display information regarding a first three-dimensional simulation of at least the portion of the plurality of coronary arteries, the first three-dimensional simulation including the determined first fractional flow reserve; and

communicating display information regarding a second three-dimensional simulation of at least the portion of the plurality of coronary arteries, the second three-dimensional simulation including the determined second fractional flow reserve.

22. The method of claim 21, wherein:

the first three-dimensional simulation further includes the unmodified three-dimensional model; and

the second three-dimensional simulation further includes the modified three-dimensional model.

23. The method of claim 20, wherein the position of the stent image is proposed by the at least one computer system.

24. The method of claim 20, further comprising receiving, using the at least one computer system, input from a user regarding a plan to insert the stent in the patient.

25. The method of claim 24, wherein:

the received input includes the position of the stent image on the three-dimensional model selected by the user; and

the three-dimensional model is modified by widening one of the plurality of coronary arteries represented by the three-dimensional model.

26. The method of claim 24, further comprising:

determining first information regarding a blood flow characteristic in at least part of the anatomical structure before the receiving step; and

determining second information regarding a blood flow characteristic in at least part of the anatomical structure after the receiving step,

wherein each of the first information and the second information includes at least one of blood pressure, blood velocity or blood flow rate.

27. The method of claim 24, wherein the received input includes the position of the stent image.

28. The method of claim 27, wherein:

the received input further includes a dimension of the stent image; and

the three-dimensional model is modified based on the position and the dimension of the stent image.

29. The method of claim 24, further comprising:

storing information regarding a plurality of stents;

wherein the received input includes a selection of one of the stents, and the three-dimensional model is modified based on the information regarding the selected stent.

30. A non-transitory computer readable medium for use on a computer system containing computer-executable programming instructions for performing a method for providing patient-specific cardiovascular information, the method comprising:

receiving patient-specific imaging data regarding at least a portion of an anatomical structure of the patient;

creating a three-dimensional model representing at least the portion of the anatomical structure based on the patient-specific imaging data, the three-dimensional model representing at least a portion of a plurality of coronary arteries emanating from a portion of an aorta;

determining a first fractional flow reserve at a plurality of locations within at least the portion of the plurality of coronary arteries based on the three-dimensional model and at least one physics-based model;

modifying the three-dimensional model based on a position of a stent image on the three-dimensional model to form at least one modified model; and

determining a second fractional flow reserve within at least the portion of the plurality of coronary arteries based on the at least one modified model.