Systems and methods for registration of multiple vision systems
First Claim
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1. A method for using a flexible catheter in a medical procedure, the method being implemented using a processor and comprising:
- receiving an endoscopic image from a distal end of an endoscopic image capture probe positioned within an anatomic region;
identifying a fiducial region in the endoscopic image;
defining a subregion of a model of the anatomic region, the subregion corresponding to an area surrounding a measured position of the endoscopic image capture probe, the subregion including a first portion situated distally from the distal end of the endoscopic image capture probe and a second portion situated proximally from the distal end of the endoscopic image capture probe, the measured position of the endoscopic image capture probe being received from a sensor system included in the endoscopic image capture probe;
identifying a search space defined by the subregion of the model, the search space including a plurality of virtual tissue structures from the subregion of the model;
matching the fiducial region in the endoscopic image with a matched one of the plurality of virtual tissue structures in the subregion of the model of the anatomic region, wherein the matched one of the plurality of virtual tissue structures is associated with a virtual probe position;
localizing a tip of the endoscopic image capture probe relative to the model of the anatomic region wherein localizing the tip includes determining an offset between the measured position of the endoscopic image capture probe and the virtual probe position; and
guiding movement of the endoscopic image capture probe in the anatomic region based on the offset.
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Abstract
A method comprises generating a model of an anatomic region and receiving a true image from an endoscopic image capture probe positioned within the anatomic region. The method further comprises identifying a true fiducial region in the true image and identifying a plurality of virtual tissue structures in the model of the anatomic region. The method further comprises matching one of the plurality of the virtual tissue structures with the true fiducial region and determining a probe pose of the endoscopic image capture probe from the matched one of the plurality of virtual tissue structures.
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Citations
21 Claims
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1. A method for using a flexible catheter in a medical procedure, the method being implemented using a processor and comprising:
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receiving an endoscopic image from a distal end of an endoscopic image capture probe positioned within an anatomic region; identifying a fiducial region in the endoscopic image; defining a subregion of a model of the anatomic region, the subregion corresponding to an area surrounding a measured position of the endoscopic image capture probe, the subregion including a first portion situated distally from the distal end of the endoscopic image capture probe and a second portion situated proximally from the distal end of the endoscopic image capture probe, the measured position of the endoscopic image capture probe being received from a sensor system included in the endoscopic image capture probe; identifying a search space defined by the subregion of the model, the search space including a plurality of virtual tissue structures from the subregion of the model; matching the fiducial region in the endoscopic image with a matched one of the plurality of virtual tissue structures in the subregion of the model of the anatomic region, wherein the matched one of the plurality of virtual tissue structures is associated with a virtual probe position; localizing a tip of the endoscopic image capture probe relative to the model of the anatomic region wherein localizing the tip includes determining an offset between the measured position of the endoscopic image capture probe and the virtual probe position; and guiding movement of the endoscopic image capture probe in the anatomic region based on the offset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical system comprising:
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a flexible catheter sized to receive an image capture probe wherein the image capture probe is sized to extend within an anatomic region; a sensor system; and a processor configured to; generate a model of the anatomic region, the model being three-dimensional; receive an image from the image capture probe positioned within the anatomic region; identify a fiducial region in the image received from the image capture probe; define a subregion of the model corresponding to a three-dimensional area surrounding a measured position of the image capture probe, the measured position being received from the sensor system; identify a search space defined by the subregion of the model to identify a plurality of virtual tissue structures in the subregion of the model of the anatomic region; match a matched one of the plurality of the virtual tissue structures in the subregion of the model with the identified fiducial region in the image received from the image capture probe, wherein the matched one of the plurality of the virtual tissue structures is associated with a virtual probe position; localize a tip of the image capture probe relative to the model of the anatomic region including determining an offset between the measured position of the image capture probe and the virtual probe position; and guide movement of the image capture probe in the anatomic region based on the offset. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for using a flexible catheter in a medical procedure, the method comprising:
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receiving a model of an anatomic region within a patient; receiving an endoscopic image from an endoscopic image capture probe positioned within the anatomic region; identifying a bifurcation structure in the endoscopic image; defining a model subregion contained within the model of the anatomic region, the model subregion corresponding to an area surrounding a measured position of the endoscopic image capture probe received from a sensor system included in the endoscopic image capture probe; identifying a search space defined by the model subregion of the model, the search space including a plurality of virtual bifurcation structures from the model subregion of the model; matching the bifurcation structure in the endoscopic image with a matched one of the plurality of virtual bifurcation structures in the model subregion, wherein the matched one of the plurality of virtual bifurcation structures is associated with a virtual probe position; determining an offset between the measured position of the endoscopic image capture probe and the virtual probe position; and guiding movement of the endoscopic image capture probe in the anatomic region based on the offset.
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Specification