Method and system for creating and using an impact atlas

• US 20080118121A1
• Filed: 11/21/2006
• Published: 05/22/2008
• Est. Priority Date: 11/21/2006
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Sirohey, Saad Ahmed, Avinash, Gopal B., Haas, Deann Marie, Dutta, Sandeep, Skinner, John V., Nezet, Patricia Le
• Granted Patent: US 7,912,270 B2
• Time in Patent Office: Days
• US Class Current: 382/128
• CPC Class Codes: A61B 6/03 Computed tomography [CT] echo-tomography A61B8/14
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/507 for determination of haemodynamic parameters, e.g. perfusion CT
• CPC Class Codes: G06T 2207/10081 Computed x-ray tomography [CT]
• CPC Class Codes: G06T 2207/30104 Vascular flow; Blood flow; Perfusion
• CPC Class Codes: G06T 7/0012 Biomedical image inspection
• CPC Class Codes: G06V 10/267 by performing operations on regions, e.g. growing, shrinking or watersheds
• CPC Class Codes: G06V 40/14 Vascular patterns

Abstract

A method and system for processing a cardiac image dataset acquired from an imaging system is provided. A location of a first potential blockage point within a first cardiac vessel is located. A functional impact of the first potential blockage point on the cardiac tissue is predicted, and a representation of the functional impact is provided.

Claims

1. A method of processing a cardiac image dataset acquired from an imaging system, the method comprising:

identifying a location of a first potential blockage point within a first cardiac vessel;

predicting a functional impact of the first potential blockage point on cardiac tissue; and

providing a representation of the functional impact.

2. The method of claim 1, wherein the predicting the functional impact is based at least partially on a cardiac anatomical atlas, the cardiac anatomical atlas being based on known historical cases.

3. The method of claim 1, wherein the predicting the functional impact is based at least partially on a cardiac impact atlas comprising functional impact regions generated using a region growing technique.

4. The method of claim 1, further comprising:

segmenting the image dataset to identify anatomical structures comprising at least the first cardiac vessel and a portion of a vascular tree associated with the first cardiac vessel; and

growing an impact region within the image dataset based on the first potential blockage point and the vascular tree, the impact region identifying at least a portion of the image dataset experiencing decreased blood flow based on the first potential blockage point, the representation being based on the impact region.

5. The method of claim 1, further comprising determining a blood flow direction within the first cardiac vessel, the functional impact being at least partially based on the blood flow direction.

6. The method of claim 1, further comprising:

registering an image dataset comprising cardiac images against a cardiac anatomical atlas, the anatomical atlas comprising at least landmarks identifying major cardiac vessels, the major cardiac vessels comprising the first cardiac vessel; and

displaying the representation of the functional impact superimposed on the image dataset.

7. The method of claim 1, wherein the functional impact is displayed in at least one of a 3D cardiac model, a 3D surface rendering of the atlas, a 3D volume rendering with marked impact regions, polar plot diagrams, textual reports, and textual summaries.

8. The method of claim 1, further comprising using a user interface to identify the potential blockage point.

9. The method of claim 1, further comprising determining a vulnerability score based on at least the location of the first potential blockage point.

10. A method for creating an impact atlas for predicting impact of a blockage within a vessel, comprising:

identifying potential blockage points within cardiac vessels of an image dataset;

growing impact regions based on the blockage points within the cardiac vessels; and

associating each of the blockage points with at least one of the impact regions in an impact atlas file.

11. The method of claim 10, further comprising associating physiological measures of a heart with the impact atlas file, the physiological measures comprising at least one of ejection fraction, stroke volume, blood flow direction, flow pressure, and heart wall movement.

12. The method of claim 10, further comprising:

identifying a location of a lesion within a second image dataset having diagnostic image data associated with a patient;

identifying at least one of the blockage points and at least one associated impact region corresponding to a potential impact within the second image dataset based on at least the location of the lesion.

13. The method of claim 10, further comprising:

identifying a location of a lesion within a second image dataset having diagnostic image data associated with a patient;

identifying at least one of the blockage points and at least one associated impact region based on at least the location of the lesion; and

displaying a functional impact of the lesion based on at least the at least one associated impact region.

14. The method of claim 10, further comprising:

identifying a location of a lesion within a second image dataset having diagnostic image data associated with a patient;

identifying at least one of the blockage points and at least one associated impact region based on at least the location of the lesion; and

creating a report representative of a functional impact of the lesion based on at least the at least one associated impact region, the report comprising at least one of a textual format and a graphical format.

15. A system for displaying potential impact of an occlusion within a coronary vessel, comprising:

a display for displaying an image dataset comprising at least anatomical structures indicative of cardiac vessels and a list of anatomical points identifying locations within the cardiac vessels, each of the anatomical points having at least one associated potential impact region defining an area of decreased blood flow based on an occlusion located proximate to the anatomical point;

a user interface for selecting a first anatomical point from the list based on a first potential occlusion point; and

a processor coupled to the display and the user interface, the processor configured to identify data associated with the first anatomical point, the display displaying the data representative of the potential impact region associated with the first anatomical point.

16. The system of claim 15, wherein the image dataset further comprises diagnostic image data of a patient, the user interface identifying a lesion within the image dataset, the first potential occlusion point being based on a location of the lesion.

17. The system of claim 15, the display further displaying the data representative of the potential impact region as one of separate from the image dataset and superimposed on the image dataset.

18. The system of claim 15, the display further displaying the data representative of the potential impact region separate from the image dataset, the data comprising at least one of a visual region superimposed on a model representative of a heart, a text based display, and a report.

19. The system of claim 15, further comprising:

the user interface selecting a second anatomical point from the list based on a second potential occlusion point identified based on the image dataset;

the processor identifying data associated with the second anatomical point; and

the display displaying the data representative of the potential impact regions associated with the first and second anatomical points separate from the image dataset, the data comprising at least one of first and second impact regions superimposed on at least one model representative of a heart, a textual display, and a report.

20. The system of claim 15, further comprising:

at least one of the user interface and the processor defining a percentage of occlusion associated with the first potential occlusion point; and

the processor modifying the display of the data based on the percentage of occlusion.