Interactive system for local intervention inside a non-homogeneous structure
First Claim
1. An interactive system for local intervention inside a region of a non-homogeneous structure to which is connected a reference structure containing a plurality of base points, the interactive system comprising:
- means for dynamically displaying a three-dimensional image of a representation of the non-homogeneous structure and of the reference structure connected to the non-homogeneous structure, wherein the three-dimensional image also includes a plurality of images of the plurality of base points;
means for determining a set of coordinates of the plurality of images of the plurality of base points in a first reference frame;
means for fixing a position of the non-homogeneous structure and of the reference structure with respect to a second reference frame;
means for determining a set of coordinates of the plurality of base points in the second reference frame;
means of intervention comprising an active member whose position is determined with respect to the second reference frame;
means for generating a plurality of reference frame translation tools for translating a plurality of reference frames from the first reference frame to the second reference frame and vice versa, based on the set of coordinates of the plurality of images of the plurality of base points in the first reference frame and of the set of coordinates of the plurality of base points in the second reference frame, in such a way as to reduce to a minimum at least one of a set of deviations between the set of coordinates of the plurality of images of the plurality of base points in the first reference frame and the set of coordinates of the base points, expressed in the first reference frame using the plurality of reference frame translation tools;
means for defining, with respect to the first reference frame, a simulated origin of intervention and a simulated direction of intervention; and
,means for transferring the plurality of reference frames using the plurality of reference frame translation tools to establish a bidirectional coupling between the simulated origin of intervention and the simulated direction of intervention and the position of the active member.
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Abstract
An interactive system for a local intervention inside a region of a non-homogeneous structure, such as the skull of a patient, which is related to the frame of reference (R2) of an operation table, and which is connected to a reference structure comprising a plurality of base points. The system creates on a screen a representation of the non-homogeneous structure and of the reference structure connected thereto, provides the coordinates of the images of the base points in the first frame of reference (R1), allows the marking of the coordinates of the base points in R2, and allows the carrying out of the local intervention with an active member such as a trephining tool, a needle, or a radioactive or chemical implant. The systems also optimizes the transfer of reference frames between R1 and R2, from the coordinates of the base points in R2 and the images in R1 by reducing down to a minimum the deviations between the coordinates of images in R1 and the base points in R1 after transfer. The system also establishes real time bi-directional coupling between: (1) an origin and a direction of intervention simulated on the screen, (2) the position of the active member.
534 Citations
101 Claims
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1. An interactive system for local intervention inside a region of a non-homogeneous structure to which is connected a reference structure containing a plurality of base points, the interactive system comprising:
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means for dynamically displaying a three-dimensional image of a representation of the non-homogeneous structure and of the reference structure connected to the non-homogeneous structure, wherein the three-dimensional image also includes a plurality of images of the plurality of base points; means for determining a set of coordinates of the plurality of images of the plurality of base points in a first reference frame; means for fixing a position of the non-homogeneous structure and of the reference structure with respect to a second reference frame; means for determining a set of coordinates of the plurality of base points in the second reference frame; means of intervention comprising an active member whose position is determined with respect to the second reference frame; means for generating a plurality of reference frame translation tools for translating a plurality of reference frames from the first reference frame to the second reference frame and vice versa, based on the set of coordinates of the plurality of images of the plurality of base points in the first reference frame and of the set of coordinates of the plurality of base points in the second reference frame, in such a way as to reduce to a minimum at least one of a set of deviations between the set of coordinates of the plurality of images of the plurality of base points in the first reference frame and the set of coordinates of the base points, expressed in the first reference frame using the plurality of reference frame translation tools; means for defining, with respect to the first reference frame, a simulated origin of intervention and a simulated direction of intervention; and
,means for transferring the plurality of reference frames using the plurality of reference frame translation tools to establish a bidirectional coupling between the simulated origin of intervention and the simulated direction of intervention and the position of the active member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An interactive system for intervention inside a region of a patient, said interactive system comprising:
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a device operable to receive image data of the region of the patient, wherein the image data includes image data of a first reference structure to establish an image reference frame for the region of the patient; a second reference structure positioned relative to the patient to establish a patient reference frame for the region of the patient; a controller operable to correlate the position of the first reference structure in the image reference frame with the position of the second reference structure in the patient reference frame; an active member operable to perform the intervention; and a tracking system operable to determine a position of at least the second reference structure and a position of the active member and configured to transmit the determined positions of the second reference structure and the active member to the controller; wherein the controller is configured to determine the position of the active member based on the determined position of at least the active member and the correlation of the first reference structure and the second reference structure. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. An interactive system for intervention inside a region of a patient, said interactive system comprising:
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a device operable to receive image data of the region of the patient, wherein the image data includes image data of a first reference structure to establish an image reference frame for the region of the patient; a second reference structure positioned relative to the patient to establish a patient reference frame for the region of the patient; and a controller operable to correlate the position of the first reference structure in the image reference frame with the position of the second reference structure in the patient reference frame; wherein the device is operable to construct three-dimensional images from captured two-dimensional images; wherein the controller is operable to superimpose two-dimensional image data on the three-dimensional images wherein any change in soft external parts of the patient can be visualized as compared with the image captured by the imaging device.
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68. An interactive system for intervention inside a region of a patient, said interactive system comprising:
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a device operable to receive image data of the region of the patient, wherein the image data includes image data of a first reference structure to establish an image reference frame for the region of the patient; a second reference structure positioned relative to the patient to establish a patient reference frame for the region of the patient; a controller operable to correlate the position of the first reference structure in the image reference frame with the position of the second reference structure in the patient reference frame; and an active member operable to perform the intervention; wherein the device includes a display operable to display the image data of the region of the patient in relation to the image reference frame; wherein the controller is further operable to determine residual uncertainty which is used to represent a contour with dimensions larger than those which would normally be represented and the display is operable to display the residual uncertainty of the contour. - View Dependent Claims (69)
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70. An interactive system for intervention inside a region of a patient, said interactive system comprising:
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a device operable to receive image data of the region of the patient, wherein the image data includes image data of a first reference structure to establish an image reference frame for the region of the patient; a second reference structure positioned relative to the patient to establish a patient reference frame for the region of the patient; a controller operable to correlate the position of the first reference structure in the image reference frame with the position of the second reference structure in the patient reference frame; an active member operable to perform the intervention inside the region of the patient; a tracking system operable to track the position of the active member in relation to the patient reference frame, the tracking system being in communication with the controller to transmit the tracked position of the active member as position information to the controller, wherein the controller is operable to determine the position of the active member relative to the image reference frame; and a display operable to display the real-time position of the active member in the image reference frame based on the controller determined position of the active member based on the tracked position of the active member from the tracking system, wherein the controller is configured to generate a representation of the active member that is displayed on the display relative to a display of the received image data. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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84. A method for performing an image guided intervention inside a region of a patient, said method comprising:
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accessing a first image data of the region of the patient captured with an imaging system where the first image data includes image data of a first reference structure; identifying the first reference structure in the first image data to establish an image reference frame; identifying a second reference structure relative to the patient to establish a patient reference frame; correlating the position of the first reference structure in the image reference frame in the first image data with the position of the second reference structure in the patient reference frame; and tracking an active member at least to determine a position of the active member in the patient reference frame to determine a location of the active member based on the tracking of the active member and transmitting the determined position in the patient refrence frame for display on a display device relative to the image reference frame of the first image data based at least on the correlation of the first reference structure and the second reference structure. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101)
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Specification