Operation of a remote medical navigation system using ultrasound image
First Claim
Patent Images
1. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging with a localized ultrasound imaging catheter and system, the method comprising:
- ultrasonically imaging the operating region using an ultrasound imaging system on an ultrasound imaging catheter in the operating region to obtain a generally planar ultrasound image;
registering the ultrasonic imaging system relative to the remote navigation system by using localization information corresponding to the ultrasound imaging catheter, and thence computing a spatial mapping between the remote navigation system and the ultrasound imaging system;
fusing the generally planar ultrasound image with three dimensional pre-operative data on the remote navigation system; and
using computer-controlled remote navigation to navigate the medical device to a target location selected on the generally planar ultrasound image.
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Abstract
A method of operating a remote medical navigation system using ultrasound, employs ultrasound imaging from a medical device to supplement or to replace conventional x-ray imaging of the operating region during navigation.
201 Citations
14 Claims
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1. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging with a localized ultrasound imaging catheter and system, the method comprising:
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ultrasonically imaging the operating region using an ultrasound imaging system on an ultrasound imaging catheter in the operating region to obtain a generally planar ultrasound image; registering the ultrasonic imaging system relative to the remote navigation system by using localization information corresponding to the ultrasound imaging catheter, and thence computing a spatial mapping between the remote navigation system and the ultrasound imaging system; fusing the generally planar ultrasound image with three dimensional pre-operative data on the remote navigation system; and using computer-controlled remote navigation to navigate the medical device to a target location selected on the generally planar ultrasound image.
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2. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging from an ultrasound imaging system on an ultrasound imaging catheter, the method comprising:
automatically reorienting the ultrasound imaging catheter with a robotic mechanism as the medical device is steered by the remote navigation system to position the ultrasound imaging catheter such that the medical device stays within the imaging field-of-view of the ultrasound system on the ultrasound imaging catheter.
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3. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging from an ultrasound imaging system on an ultrasound imaging catheter, the method comprising:
- computing and displaying a re-orientation of the ultrasound imaging catheter that will maintain the medical device in the field-of-view of the ultrasound imaging system as the medical device is steered by the remote navigation system.
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4. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging from an ultrasound imaging system on a localized ultrasound imaging catheter, the method comprising:
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ultrasonically imaging the operating region with the ultrasound imaging system on the ultrasound catheter; registering the ultrasonic imaging system relative to the remote navigation system by using localization information corresponding to the ultrasound imaging catheter, and thence computing a spatial mapping between the remote navigation system and the ultrasound imaging system; fusing three dimensional pre-operative image data with the ultrasound image data to provide additional anatomical context; and navigating the medical device remotely with the remote navigation system using the fused data as additional reference.
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5. A method of operating a remote navigation system that orients the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging from an ultrasound imaging system on an ultrasound imaging catheter, the method comprising:
- ultrasonically imaging the operating region with the ultrasound imaging system;
registering the ultrasonic imaging system relative to the remote navigation system by marking two points in the distal portion of the ultrasound catheter on a pair of X-ray images, as well as an additional third point in the pair of X-ray images, marking similar points in the ultrasound image, and thence determining a spatial mapping between the remote navigation system and the ultrasound imaging system;
fusing three dimensional pre-operative image data with the ultrasound image data to provide additional anatomical context; andnavigating the medical device remotely with the remote navigation system using the fused data as additional reference.
- ultrasonically imaging the operating region with the ultrasound imaging system;
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6. A method of operating a remote navigation system that moves the distal end of a medical device in an operating region in a subject using as reference internally acquired ultrasound imaging with an ultrasound imaging catheter and system, the method comprising:
- automatically reorienting the ultrasound imaging catheter as the medical device is moved to anatomical targets of interest such that the medical device remains within the imaging field-of-view of the ultrasound imaging system.
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7. A method of navigating the distal end of a medical device through a body lumen, the method comprising:
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ultrasonically imaging a portion of the body lumen surrounding the distal end of the medical device; and comparing the ultrasound image of the portion of the body lumen with a three dimensional reconstruction of the body lumen registered to a Cartesian frame of a remote navigation system to obtain a location of the distal end of the medical device relative to the three dimensional reconstruction;
using the location to obtain registration of the ultrasonic image with the Cartesian frame of the navigation system. - View Dependent Claims (8, 9)
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10. A method of navigating the distal end of a medical device through a body lumen, the method comprising:
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ultrasonically imaging a portion of the body lumen surrounding the distal end of the medical device; displaying an image of the portion of the body lumen surrounding the distal end of the medical device; and placing the displayed image in anatomical context by comparing the image of the portion of the body lumen with a three dimensional reconstruction of the body lumen registered to the Cartesian frame of a remote navigation system to locate the distal end of the medical device relative to the three dimensional reconstruction; using the location to obtain registration of the ultrasonic image with the Cartesian frame of the navigation system. - View Dependent Claims (11, 12, 13, 14)
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Specification