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US 8,942,455 B2Granted
2D/3D image registration method
AssigneeSiemens Aktiengesellschaft
InventorsChen-Rui Chou, Atilla Peter Kiraly, Christophe Chefd'hotel, David Thivierge-Gaulin
Life of this patent
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Abstract
A method (100) that registers a 3D heart volume (112, 114) obtained from either a pre-operative MR image or CT image (102) to an intra-operative fluoroscopic image using a mesh of the heart structure (106) as the basis for the registration.
Claims25
A method of registering a 2D image of an object to a 3D image of the object, comprising
- forming a 3D mesh of the object from the 3D image,
- translating the 3D image or the 3D mesh into a counterpart 2D image, and
- spatially aligning the 3D mesh with the 2D image using the counterpart 2D image, including applying a cost function to evaluate and optimize a Chan-Vese-like functional used as an image dissimilarity metric.
A method of visualizing an object relative to an anatomical region of interest of a patient during a medical procedure, comprising:
- a. obtaining an intra-operative 2D image of the anatomical region of interest;
- b. obtaining volumetric imaging data of the anatomical region of interest;
- c. obtaining a 3D mesh of the volumetric imaging data;
- d. obtaining an estimated pose of the anatomical region of interest from the 3D mesh;
- e. optimizing the estimated pose of the 3D mesh within the intra-operative 2D image to register the 3D mesh with the intra-operative 2D image and to localize the object relative to the anatomical region of interest;
- f. obtaining a plurality of image frames for the intra-operative 2D image;
- and
- g. detecting changes in the average intensity of the image in the plurality of image frames to determine an optimal image frame for an initial alignment of the 3D mesh with the intra-operative 2D image.
5 more elements
A system for providing multi-modal 2D/3D image registration during a medical procedure, comprising
- an imager that acquires 2D image data of an anatomical region of a patient and
- a processor that manipulates the acquired image data and stored 3D image data of the anatomical region to align a stored 3D image to a 2D image and to automatically track the anatomical region position during the medical procedure,
- said processor manipulating the 3D image data, in part, to render the stored 3D image in two dimensions for a positional comparison between the 3D image and the 2D image,
- wherein the processor applies a cost function to evaluate and optimize a Chan-Vese-like functional used as an image dissimilarity metric and an optimization method to minimize the image dissimilarity metric.
1 more element
Dependencies are inferred from the claim text.