Method and apparatus for volumetric image navigation
First Claim
1. A system for augmented viewing of a patient target site in a surgical setting by a user, comprising:
- a computer for storing scan data of the patient target region, and for constructing from the stored data, a three dimensional perspective volumetric image of the target site as seen from a selected orientation;
a viewing device, the device having a first ocular instrument and a second ocular instrument in which the patient target site can be viewed, and in which the three dimensional perspective volumetric image can be projected, forming a fused image using the patient target site view and the three dimensional perspective volumetric image;
a tracking device coupled to the computer for tracking the selected orientation of the viewing device; and
a calibration module in the computer for placing the viewing device in the same coordinate system as the patient in response to tracking information received from the tracking device, wherein the selected orientation from which the volumetric image of the target is constructed by the computer is the selected orientation of the second ocular instrument.
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Accused Products
Abstract
A surgical navigation system has a computer with a memory and display connected to a surgical instrument or pointer and position tracking system, so that the location and orientation of the pointer are tracked in real time and conveyed to the computer. The computer memory is loaded with data from an MRI, CT, or other volumetric scan of a patient, and this data is utilized to dynamically display 3-dimensional perspective images in real time of the patient'"'"'s anatomy from the viewpoint of the pointer. The images are segmented and displayed in color to highlight selected anatomical features and to allow the viewer to see beyond obscuring surfaces and structures. The displayed image tracks the movement of the instrument during surgical procedures. The instrument may include an imaging device such as an endoscope or ultrasound transducer, and the system displays also the image for this device from the same viewpoint, and enables the two images to be fused so that a combined image is displayed. The system is adapted for easy and convenient operating room use during surgical procedures.
308 Citations
25 Claims
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1. A system for augmented viewing of a patient target site in a surgical setting by a user, comprising:
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a computer for storing scan data of the patient target region, and for constructing from the stored data, a three dimensional perspective volumetric image of the target site as seen from a selected orientation; a viewing device, the device having a first ocular instrument and a second ocular instrument in which the patient target site can be viewed, and in which the three dimensional perspective volumetric image can be projected, forming a fused image using the patient target site view and the three dimensional perspective volumetric image; a tracking device coupled to the computer for tracking the selected orientation of the viewing device; and a calibration module in the computer for placing the viewing device in the same coordinate system as the patient in response to tracking information received from the tracking device, wherein the selected orientation from which the volumetric image of the target is constructed by the computer is the selected orientation of the second ocular instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for augmented viewing of a patient target site in a surgical setting through a viewing device having a pair of ocular instruments, the method comprising:
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storing scan data of the patient target region in a computer, the scanned data having a scanned data coordinate system; tracking the position of the patient and the position and orientation of the viewing device; registering a patient coordinate system with the scanned data coordinate system; constructing a three dimensional perspective volumetric image of the target site using the stored scanned data with a computer processor to create said three dimensional perspective volumetric image from the position and orientation of the viewing device; and
injecting the three dimensional perspective volumetric image in the viewing device such that a user sees both an actual image of the patient and the constructed three dimensional perspective volumetric image in the combined ocular instrument. - View Dependent Claims (14, 15, 16, 17)
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18. A system for augmented stereotactic surgery, comprising:
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a set of scanned image data; a microscope having a microscopic field of view, the microscope having a first and a second ocular instrument; a laser scanning device aligned to project an outline of the microscopic field of view on a patient anatomy; a computer having a construction module and a registration module, the construction module configured for constructing a three dimensional perspective volumetric representation of the set of scanned image data, wherein the registration module is configured for aligning the outline of the microscopic field of view with the three dimensional perspective volumetric representation of the set of scanned image data; and a image injection device coupled to the microscope for injecting the three dimensional perspective volumetric representation of the set of scanned image data in the microscopic field of view. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. An apparatus for combining a representation of a patient anatomy generated from preexisting image data with dynamic imagery, comprising:
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a surgical instrument having an optical field of view for dynamic viewing of the patient anatomy; a laser scanning device coupled to the surgical instrument and configured to project the surgical instrument'"'"'s optical field of view on the patient anatomy; a computer capable of creating a three dimensional perspective volumetric image of the preexisting image data in registration with the optical field of view of the surgical device and the patient anatomy based on the surgical instrument'"'"'s orientation and optical field of view; and a combining device to inject the three dimensional perspective volumetric image of the preexisting image data in the optical field of view of the surgical instrument.
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Specification