Method and system for X-ray image generation
AssigneeMAKO Surgical Corp.
InventorMilan Ikits
Life of this patent
Estimating the term…
Abstract
A method of creating an image including retrieving three-dimensional image data of an anatomy, retrieving a model of a portion of the anatomy, associating the model with the three-dimensional image data such that the model defines a bounded volume within the three-dimensional image data corresponding to the portion of the anatomy, and creating a virtual radiograph of the portion of the anatomy. Creating the virtual radiograph includes casting a plurality of rays from an origin point through the bounded volume, sampling, for each ray, the bounded volume at a plurality of sampling steps along the ray, the sampling steps separated by a sampling distance, and calculating, for each ray, an accumulated attenuation value of the bounded volume along the ray based on the samples.
Claims20
A method of creating an image, comprising:
- retrieving three-dimensional image data of an anatomy;
- retrieving a model of a portion of the anatomy;
- associating the model with the three-dimensional image data such that the model defines a bounded volume within the three-dimensional image data corresponding to the portion of the anatomy;
- and
- creating a virtual radiograph of the portion of the anatomy, wherein creating the virtual radiograph comprises:
- casting a plurality of rays from an origin point through the bounded volume;
- sampling, for each ray, the bounded volume at a plurality of sampling steps along the ray, the sampling steps separated by a sampling distance;
- and
- calculating, for each ray, an accumulated attenuation value of the bounded volume along the ray based on the samples.
An image generation system, comprising:
- an input/output interface;
- a display coupled to the input/output interface;
- and
- a processing circuit having a processor and a memory, the processing circuit configured to:
- retrieve three-dimensional image data of an anatomy;
- retrieve a model of a portion of the anatomy;
- associate the model with the three-dimensional image data such that the model defines a bounded volume within the three-dimensional image data corresponding to the portion of the anatomy;
- create a virtual radiograph of the portion of the anatomy, wherein creating the virtual radiograph comprises:
- casting a plurality of rays from an origin point through the bounded volume;
- sampling, for each ray, the bounded volume at a plurality of sampling steps along the ray, the sampling steps separated by a sampling distance;
- and
- calculating, for each ray, an accumulated attenuation value of the bounded volume along the ray based on the samples;
- and
- display an image of the virtual radiograph on the display.
Dependencies are inferred from the claim text.