Method and system for image processing to determine patient-specific blood flow characteristics
First Claim
1. A system for image processing to determine cardiovascular information for a patient, the system comprising:
- at least one computer system configured to;
receive patient-specific data regarding a geometry of an anatomical structure of the patient, the anatomical structure including at least a portion of a plurality of coronary arteries emanating from the patient'"'"'s aorta;
create a three-dimensional geometric model representing the anatomical structure using the patient-specific data;
generate a one-dimensional blood flow model defining blood flow through the anatomical structure of the patient using the three-dimensional geometric model;
generate a pressure model using the three-dimensional geometric model, wherein the pressure model defines blood pressure at two or more locations within the anatomical structure represented by the three-dimensional geometric model; and
determine at least one blood flow characteristic within the anatomical structure using the pressure model and the one-dimensional blood flow model, wherein the blood flow characteristic is a ratio of pressures at two or more locations within the anatomical structure.
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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.
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Citations
20 Claims
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1. A system for image processing to determine cardiovascular information for a patient, the system comprising:
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at least one computer system configured to; receive patient-specific data regarding a geometry of an anatomical structure of the patient, the anatomical structure including at least a portion of a plurality of coronary arteries emanating from the patient'"'"'s aorta; create a three-dimensional geometric model representing the anatomical structure using the patient-specific data; generate a one-dimensional blood flow model defining blood flow through the anatomical structure of the patient using the three-dimensional geometric model; generate a pressure model using the three-dimensional geometric model, wherein the pressure model defines blood pressure at two or more locations within the anatomical structure represented by the three-dimensional geometric model; and determine at least one blood flow characteristic within the anatomical structure using the pressure model and the one-dimensional blood flow model, wherein the blood flow characteristic is a ratio of pressures at two or more locations within the anatomical structure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
determine, based on the three-dimensional geometric model, a size of coronary arteries within the anatomical structure; determine total cardiac output based on the size of coronary arteries within the anatomical structure; and determine at least one inlet boundary condition and at least one outlet boundary condition of the boundary condition model based, at least in part, on the total cardiac output.
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4. The system of claim 1, wherein the at least one computer system configured to generate a one-dimensional blood flow model is further configured to:
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determine centerlines of coronary arteries of the anatomical structure; and determine, within the coronary arteries of the anatomical structure, pressure and flow along the centerlines.
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5. The system of claim 1, wherein the patient-specific data is obtained using angiography.
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6. The system of claim 1, wherein the determining the blood flow characteristic is performed while the patient remains catheterized.
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7. The system of claim 1, wherein the at least one computer system is further configured to:
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determine, for at least one of coronary arteries of the anatomical structure, blood flow over at least one phase of the cardiac cycle; and determine the blood flow characteristic of the patient, at least in part, based on the blood flow over the at least one phase of the cardiac cycle.
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8. A computer-implemented method for image processing to determine cardiovascular information for a patient, the method comprising:
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receiving patient-specific data regarding a geometry of an anatomical structure of the patient, the anatomical structure including at least a portion of a plurality of coronary arteries emanating from the patient'"'"'s aorta; creating a three-dimensional geometric model representing the anatomical structure using the patient-specific data; generating a one-dimensional blood flow model defining blood flow through the anatomical structure of the patient using the three-dimensional geometric model; generating a pressure model using the three-dimensional geometric model, wherein the pressure model defines blood pressure at two or more locations within the anatomical structure represented by the three-dimensional geometric model; and determining at least one blood flow characteristic within the anatomical structure using the pressure model and the one-dimensional blood flow model, wherein the blood flow characteristic is a ratio of pressures at two or more locations within the anatomical structure. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer readable medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to perform a method for image processing to determine cardiovascular information for a patient, the method comprising:
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receiving patient-specific data regarding a geometry of an anatomical structure of the patient, the anatomical structure including at least a portion of a plurality of coronary arteries emanating from the patient'"'"'s aorta; creating a three-dimensional geometric model representing the anatomical structure using the patient-specific data; generating a one-dimensional blood flow model defining blood flow through the anatomical structure of the patient using the three-dimensional geometric model; generating a pressure model using the three-dimensional geometric model, wherein the pressure model defines blood pressure at two or more locations within the anatomical structure represented by the three-dimensional geometric model; and determining at least one blood flow characteristic within the anatomical structure using the pressure model and the one-dimensional blood flow model, wherein the blood flow characteristic is a ratio of pressures at two or more locations within the anatomical structure. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification