Systems and methods for image-based object modeling using multiple image acquisitions or reconstructions

Patent metadata

Field	Value
Publication number	US-9514530-B2
Application number	US-201414254519-A
Country	US
Kind code	B2
Filing date	Apr 16, 2014
Priority date	Apr 16, 2014
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

Systems and methods that involve integrating imaging data from multiple sources to create a single, accurate model of a patient's anatomy. One method includes receiving a representation of a target object for modeling; determining one or more first anatomical parameters of the target anatomical object from at least one of one or more first images of the target anatomical object; determining one or more second anatomical parameters of the target anatomical object from at least one of one or more second images of the target anatomical object; updating the one or more first anatomical parameters based at least on the one or more second anatomical parameters; and generating a model of the target anatomical object based on the updated first anatomical parameters.

First claim

What is claimed is:

1. A computer-implemented method of modeling at least a portion of a patient's vasculature, using a computer system, the method comprising:
receiving one or more three-dimensional images of a portion of a patient's coronary vasculature;
receiving one or more two-dimensional images that are generated independently from the one or more three-dimensional images, wherein the one or more two-dimensional images include images of the portion of the patient's coronary vasculature;
determining, from the one or more three-dimensional images, one or more three-dimensional image based anatomical parameters of the portion of the patient's coronary vasculature;
determining, from the independently-generated one or more two-dimensional images, one or more two-dimensional image based anatomical parameters of the portion of the patient's coronary vasculature;
updating the one or more three-dimensional image based anatomical parameters based at least on the one or more two-dimensional image based anatomical parameters; and
generating a model of at least the portion of the patient's coronary vasculature based on the updated three-dimensional image based anatomical parameters.

2. The method of claim 1 , wherein the one or more three-dimensional images include one or more cardiac computed tomography images and the one or more two-dimensional images include one or more intravascular images.

3. The method of claim 1 , wherein the one or more three-dimensional images include one or more cardiac computed tomography images and the one or more two-dimensional images include one or more angiography images.

4. The method of claim 1 , further including:
obtaining an initial model of at least the portion of the patient's coronary vasculature, wherein the generated model is based on the initial model.

5. The method of claim 1 , further comprising:
performing a segmentation of at least one of the one or more three-dimensional images of the portion of the patient's coronary vasculature; and
determining, using the segmentation of the at least one of the one or more three-dimensional images, one or more segmentation-based anatomical parameters of the portion of the patient's coronary vasculature as the one or more three-dimensional image based anatomical parameters.

6. The method of claim 1 , further comprising designating one of the three-dimensional or two-dimensional images as a reference image, wherein updating the one or more three-dimensional image based anatomical parameters based at least on the one or more two-dimensional image based anatomical parameters comprises:
generating an object model of a centerline and lumen diameters from each of the one or more three-dimensional image based or two-dimensional image based anatomical parameters;
registering each object model of a centerline and lumen diameters from each of the one or more three-dimensional image based or two-dimensional image based anatomical parameters to an object model associated with the reference image; and
averaging one or more lumen diameters of each object model with one or more lumen diameters of the object model associated with the reference image.

7. The method of claim 1 , wherein the model of the patient's coronary vasculature includes the updated three-dimensional image based anatomical parameters for a centerline tree and one or more lumen diameters at locations along the centerline tree.

8. The method of claim 1 , further including:
designating one of the three-dimensional images as a reference image;
extracting a geometric representation from the reference image; and
generating the model of the patient's coronary vasculature based on the geometric representation.

9. The method of claim 1 , further including:
receiving patient-specific information, including upper and/or lower bound information on total vascular volume; and
generating the model of the patient's coronary vasculature further based on the received patient-specific information.

10. A system of modeling at least a portion of a patient's anatomy, using a computer system, the system comprising:
a data storage device storing instructions for modeling based on patient-specific anatomic image data; and
a processor configured to execute the instructions to perform a method including:
receiving one or more three-dimensional images of a portion of a patient's coronary vasculature;
receiving one or more two-dimensional images that are generated independently from the one or more three-dimensional images, wherein the one or more two-dimensional images include images of the portion of the patient's coronary vasculature;
determining, from the one or more three-dimensional images, one or more three-dimensional image based anatomical parameters of the portion of the patient's coronary vasculature;
determining, from the independently-generated one or more two-dimensional images, one or more two-dimensional image based anatomical parameters of the portion of the patient's coronary vasculature;
updating the one or more three-dimensional image based anatomical parameters based at least on the one or more two-dimensional image based anatomical parameters; and
generating a model of at least the portion of the patient's coronary vasculature based on the updated three-dimensional image based anatomical parameters.

11. The system of claim 10 , wherein the one or more three-dimensional images include one or more cardiac computed tomography images and the one or more two-dimensional images include one or more intravascular images.

12. The system of claim 10 , wherein the one or more three-dimensional images include one or more cardiac computed tomography images and the one or more second images include one or more angiography images.

13. The system of claim 10 , wherein the processor is further configured for:
obtaining an initial model of at least the portion of the patient's coronary vasculature, wherein the generated model is based on the initial model.

14. The system of claim 10 , further comprising:
performing a segmentation of at least one of the one or more three-dimensional images of the portion of the patient's coronary vasculature; and
determining, using the segmentation of the at least one of the one or more three-dimensional images, one or more segmentation-based anatomical parameters of the portion of the patient's coronary vasculature as the one or more three-dimensional image based anatomical parameters.

15. The system of claim 10 , wherein the processor is further configured for designating one of the three-dimensional or two-dimensional images as a reference image; wherein updating the one or more three-dimensional image based anatomical parameters based at least on the one or more two-dimensional image based anatomical parameters comprises:
generating an object model of a centerline and lumen diameters from each of the one or more three-dimensional image based or two-dimensional image based anatomical parameters;
registering each object model of a centerline and lumen diameters from each of the one or more three-dimensional image based or two-dimensional image based anatomical parameters to an object model associated with the reference image; and
averaging one or more lumen diameters of each object model with one or more lumen diameters of the object model associated with the reference image.

16. The system of claim 10 , wherein the model of the patient's coronary vasculature includes the updated three-dimensional image based anatomical parameters for a centerline tree and one or more lumen diameters at locations along the centerline

Assignees

• Heartflow Inc

Inventors

• Grady Leo
• Schaap Michiel

Classifications

• G06T12/30

  Image post-processing, e.g. metal artefact correction · CPC title

• A61B6/503

  for diagnosis of the heart · CPC title

• A61B8/00

  Diagnosis using ultrasonic, sonic or infrasonic waves · CPC title

• G06T7/0014

  using an image reference approach · CPC title

• A61B5/489

  Blood vessels · CPC title