Method and system for patient-specific modeling of blood flow

• US 8,630,812 B2
• Filed: 11/19/2012
• Issued: 01/14/2014
• 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:
  US13/680,901
• Publication Number:
  US 20130151163A1
• Time in Patent Office: 421 Days
• Field of Search: None
• US Class Current: 702/19
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Abstract

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient'"'"'s heart, and create a three-dimensional model representing at least a portion of the patient'"'"'s heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient'"'"'s heart and determine a fractional flow reserve within the patient'"'"'s heart based on the three-dimensional model and the physics-based model.

Claims

1. A computer-implemented method for enabling the assessment of a coronary artery of a patient, based on a calculated blood flow characteristic, the method comprising:

displaying, on a digital display device, a three-dimensional model of at least a portion of multiple coronary arteries branching from an aorta of the patient, wherein the three-dimensional model is provided by a computer system;

displaying, on the display device, a first blood flow characteristic calculated by the computer system for at least one of the coronary arteries in the three-dimensional model;

receiving an input to the computer system related to a treatment plan for the at least one of the coronary arteries, wherein the treatment plan includes a widening of a lumen defined by the at least one of the coronary arteries; and

calculating and displaying, on the display device, a second blood flow characteristic for the at least one of the coronary arteries, wherein calculation of the second blood flow characteristic is based at least in part on the input.

2. A method as in claim 1, wherein displaying the first blood flow characteristic and displaying the second blood flow characteristic include displaying separate first and second blood flow characteristics calculated for each of multiple coronary arteries.

3. A method as in claim 1, further comprising:

displaying, on the display device, a first value for at least one additional physiological parameter, wherein the first value is calculated by the computer system; and

displaying, on the display device after receiving the input, a second value for the at least one additional physiological parameter, wherein the second value is calculated by the computer system based at least in part on the input.

4. A method as in claim 1, wherein the input includes a location in the lumen for the widening and an amount of widening.

5. A method as in claim 1, wherein the three-dimensional model includes at least one occlusion in the at least one of the coronary arteries, and wherein receiving the input comprises receiving a positioning of a digital image of at least one stent over or near the occlusion.

6. A method as in claim 5, further comprising displaying a modified three-dimensional model, generated by the computer system, based on placement of the stent image.

7. A method as in claim 1, wherein the input includes creating a passageway in the three-dimensional model.

8. A method as in claim 1, wherein the three-dimensional model includes at least one occlusion in the at least one of the coronary arteries, and wherein receiving the input comprises receiving a positioning of a digital image of at least one coronary bypass graft over or near the occlusion.

9. A method as in claim 1, wherein displaying the first and second blood flow characteristics comprises displaying the blood flow characteristics located over or adjacent the at least one of the coronary arteries.

10. A method as in claim 1, further comprising displaying a modified three-dimensional model after the step of receiving the input, wherein the modified three-dimensional model is generated by the computer, based on the input.

11. A method as in claim 10, further comprising displaying a comparison of the three-dimensional model and the modified three-dimensional model.

12. A method as in claim 1, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from one or more noninvasive imaging techniques.

13. A method as in claim 12, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from computed tomography scans.

14. A method of claim 1, wherein the treatment plan includes at least one of an increase in exercise, a change in diet, a prescription of medication, a cessation of smoking, and a lifestyle change.

15. A method as in claim 1, wherein one or both of the first and second blood flow characteristics include at least one of a pressure gradient, a pressure, a flow rate, and a velocity.

16. A computer-implemented method for enabling the planning of a treatment of a patient, based on a calculated blood flow characteristic value, the method comprising:

enabling a user to log onto a secure web site via a digital display device;

displaying, on the digital display device, a three-dimensional model of at least a portion of multiple coronary arteries branching from an aorta of the patient, wherein the three-dimensional model is provided by a computer system and delivered through the secure web site, and wherein at least one of the coronary arteries includes an occlusion;

displaying a first blood flow characteristic on the digital display device for the at least one coronary artery including the occlusion, wherein the first blood flow characteristic is calculated by the computer system;

receiving an input to the computer system related to a treatment plan for the at least one coronary artery including the occlusion; and

calculating and displaying a modified three-dimensional model and a second blood flow characteristic on the digital display device, wherein the second blood flow characteristic is calculated by the computer system based on the modified three-dimensional model of the at least one coronary artery including the occlusion based on the input, and wherein the modified three-dimensional model is generated by the computer system based on the input.

17. A method as in claim 16, wherein displaying a first blood flow characteristic and displaying a second blood flow characteristic comprise displaying individual first blood flow characteristics and second blood flow characteristics calculated by the computer system for multiple coronary arteries on the three-dimensional model.

18. A method as in claim 17, wherein each of the individual first and second blood flow characteristics are displayed on the digital display device proximate one of the coronary arteries for which the individual first and second blood flow characteristics were calculated.

19. A method as in claim 18, wherein receiving the input comprises receiving a positioning of an image of a stent over one of the coronary arteries on the three-dimensional model at a location at or near an occlusion.

20. A method as in claim 19, further comprising:

moving, based on a received user input, the stent image to a different position on the three-dimensional model; and

displaying another modified three-dimensional model and a third blood flow characteristic on the display device, wherein the another modified three-dimensional model and the third fraction flow reserve are generated by the computer system based on the different position of the stent image.

21. A method as in claim 18, further comprising displaying a report generated by the computer system based on the three-dimensional model, the input, and the first and second blood flow characteristics.

22. A method as in claim 21, wherein the report includes a treatment plan suggesting whether a stent should be placed in any of the coronary arteries and a location for the stent.

23. A method as in claim 16, wherein receiving the input comprises receiving a positioning of a digital image of at least one coronary bypass graft proximate the occlusion.

24. A method as in claim 16, further comprising displaying information for treating the patient based at least in part on the second blood flow characteristic.

25. A method as in claim 16, wherein one or both of the first and second blood flow characteristics include at least one of a pressure gradient, a pressure, a flow rate, and a velocity.

35. A method as in claim 24, further comprising displaying a comparison of the three-dimensional model and the modified three-dimensional model.

26. A computer-implemented method for enabling the assessment of a coronary artery of a patient based on a calculated blood flow characteristic value, the method comprising:

displaying, on a digital display device, a three-dimensional model of at least a portion of multiple coronary arteries branching from an aorta of the patient, wherein the three-dimensional model is provided by a computer system;

displaying, on the display device, a first blood flow characteristic calculated by the computer system for at least one of the coronary arteries in the three-dimensional model;

receiving an input to the computer system related to a treatment plan for the at least one of the coronary arteries; and

calculating and displaying, on the display device, a second blood flow characteristic for the at least one of the coronary arteries, wherein calculation of the second blood flow characteristic is based at least in part on the input;

wherein the three-dimensional model includes at least one occlusion in the at least one of the coronary arteries, and wherein receiving the input comprises receiving a positioning of a digital image of at least one stent or coronary bypass graft over or near the occlusion.

27. A method as in claim 26, wherein displaying the first blood flow characteristic and displaying the second blood flow characteristic include displaying separate first and second blood flow characteristics calculated for each of multiple coronary arteries.

28. A method as in claim 26, further comprising:

displaying, on the display device, a first value for at least one additional physiological parameter, wherein the first value is calculated by the computer system; and

displaying, on the display device after receiving the input, a second value for the at least one additional physiological parameter, wherein the second value is calculated by the computer system based at least in part on the input.

29. A method as in claim 26, wherein the treatment plan includes a widening of a lumen defined by the at least one of the coronary arteries.

30. A method as in claim 29, wherein the input includes a location in the lumen for the widening and an amount of widening.

31. A method as in claim 26, further comprising displaying a modified three-dimensional model, generated by the computer system, based on placement of the stent image.

32. A method as in claim 26, wherein the input includes creating a passageway in the three-dimensional model.

33. A method as in claim 26, wherein displaying the first and second blood flow characteristics comprises displaying the blood flow characteristics located over or adjacent the at least one of the coronary arteries.

34. A method as in claim 26, further comprising displaying a modified three-dimensional model after the step of receiving the input, wherein the modified three-dimensional model is generated by the computer, based on the input.

36. A method as in claim 26, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from one or more noninvasive imaging techniques.

37. A method as in claim 36, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from computed tomography scans.

38. A method of claim 26, wherein the treatment plan includes at least one of an increase in exercise, a change in diet, a prescription of medication, a cessation of smoking, and a lifestyle change.

39. A method as in claim 26, wherein one or both of the first and second blood flow characteristics include at least one of a pressure gradient, a pressure, a flow rate, and a velocity.

40. A computer-implemented method for enabling the assessment of a coronary artery of a patient based on a calculated blood flow characteristic value, the method comprising:

displaying, on a digital display device, a three-dimensional model of at least a portion of multiple coronary arteries branching from an aorta of the patient, wherein the three-dimensional model is provided by a computer system;

displaying, on the display device, a first blood flow characteristic calculated by the computer system for at least one of the coronary arteries in the three-dimensional model;

receiving an input to the computer system related to a treatment plan for the at least one of the coronary arteries, wherein the input includes creating a passageway in the three-dimensional model; and

calculating and displaying, on the display device, a second blood flow characteristic for the at least one of the coronary arteries, wherein calculation of the second blood flow characteristic is calculated by the computer system at least in part based on the input.

41. A method as in claim 40, wherein displaying the first blood flow characteristic and displaying the second blood flow characteristic include displaying separate first and second blood flow characteristics calculated for each of multiple coronary arteries.

42. A method as in claim 40, further comprising:

displaying, on the display device, a first value for at least one additional physiological parameter, wherein the first value is calculated by the computer system; and

displaying, on the display device after receiving the input, a second value for the at least one additional physiological parameter, wherein the second value is calculated by the computer system based at least in part on the input.

43. A method as in claim 40, wherein the treatment plan includes a widening of a lumen defined by the at least one of the coronary arteries.

44. A method as in claim 43, wherein the input includes a location in the lumen for the widening and an amount of widening.

45. A method as in claim 40, wherein the three-dimensional model includes at least one occlusion in the at least one of the coronary arteries, and wherein receiving the input comprises receiving a positioning a digital image of at least one stent over or near the occlusion.

46. A method as in claim 45, further comprising displaying a modified three-dimensional model, generated by the computer system, based on placement of the stent image.

47. A method as in claim 40, wherein the three-dimensional model includes at least one occlusion in the at least one of the coronary arteries, and wherein receiving the input comprises receiving a positioning of a digital image of at least one coronary bypass graft over or near the occlusion.

48. A method as in claim 40, wherein displaying the first and second blood flow characteristics comprises displaying the blood flow characteristics located over or adjacent the at least one of the coronary arteries.

49. A method as in claim 40, further comprising displaying a modified three-dimensional model after the step of receiving the input, wherein the modified three-dimensional model is generated by the computer, based on the input.

50. A method as in claim 49, further comprising displaying a comparison of the three-dimensional model and the modified three-dimensional model.

51. A method as in claim 40, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from one or more noninvasive imaging techniques.

52. A method as in claim 51, wherein the first and second blood flow characteristics are calculated by the computer system from data generated from computed tomography scans.

53. A method of claim 40, wherein the treatment plan includes at least one of an increase in exercise, a change in diet, a prescription of medication, a cessation of smoking, and a lifestyle change.

54. A method as in claim 40, wherein one or both of the first and second blood flow characteristics include at least one of a pressure gradient, a pressure, a flow rate, and a velocity.