Frameless stereotactic CT scanner with virtual needle display for planning image guided interventional procedures
First Claim
1. A method of planning a minimally invasive surgical procedure for introducing an object along a trajectory from a patient entry point to a target point within the patient, the method comprising the steps of:
- using an imaging device, scanning the patient to generate an image volume data set of an area of the patient, the image volume data set being formed of a plurality of two-dimensional image slices of the patient spaced apart along an axial axis substantially aligned with the toe-to-head axis of the patient;
using a stereotactic mechanical arm assembly mounted on one end in a fixed relationship to the imaging device and having a surgical planning device defining a linear trajectory on the other end of the arm, positioning the surgical planning device in a first position adjacent the patient on the imaging device;
displaying a first transverse axial view of the patient on a first portion of a display device, the first transverse axial view of the patient being a display of a first two-dimensional image slice from said plurality of two-dimensional image slices of the patient where the linear trajectory intersects the patient'"'"'s body defining a first patient entry point;
displaying a second transverse axial view of the patient on a second portion of the display device, the second transverse axial view of the patient being a display of a second two-dimensional image slice from said plurality of two-dimensional image slices of the patient where the linear trajectory intersects the patient'"'"'s body at a first target point within the patient; and
,displaying a first oblique view of the patient on the display device, the first oblique view of the patient being a display of a first plane within said image volume data set co-planar with a line defined by said trajectory.
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Abstract
A frameless stereotactic CT scanner includes a virtual needle display for planning image-guided interventional procedures. The virtual needle is useful for planning the introduction of an object such as a biopsy probe into a patient at an entry point along a trajectory to a target point within the patient. Using an imaging device, the patient is scanned to generate an image volume data set of an area of the patient. Using a stereotactic mechanical arm assembly mounted on one end to the imaging device, a surgical planning device is positioned adjacent the patient on the imaging device. A display includes a first transverse axial view of the patient taking through an image slice corresponding to the virtual needle entry point on the patient and, a second transverse axial view of the patient taken on an image slice of the image volume data set corresponding to a target point within the patient. A first oblique axial/coronal view is also displayed together with the first and second transverse axial views, the oblique coronal view being co-planar with the virtual needle trajectory and closest to the coronal axis. An oblique sagittal view is displayed together with the above images, the oblique sagittal view being co-planar with the virtual needle. A manually adjustable virtual needle depth control member is used to adjust the "length" of a virtual needle displayed within the image volume data set. Each of the views displayed are simultaneously updated to reflect the then current position and orientation of a surgical planning device on a stereotactic mechanical arm assembly.
140 Citations
36 Claims
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1. A method of planning a minimally invasive surgical procedure for introducing an object along a trajectory from a patient entry point to a target point within the patient, the method comprising the steps of:
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using an imaging device, scanning the patient to generate an image volume data set of an area of the patient, the image volume data set being formed of a plurality of two-dimensional image slices of the patient spaced apart along an axial axis substantially aligned with the toe-to-head axis of the patient; using a stereotactic mechanical arm assembly mounted on one end in a fixed relationship to the imaging device and having a surgical planning device defining a linear trajectory on the other end of the arm, positioning the surgical planning device in a first position adjacent the patient on the imaging device; displaying a first transverse axial view of the patient on a first portion of a display device, the first transverse axial view of the patient being a display of a first two-dimensional image slice from said plurality of two-dimensional image slices of the patient where the linear trajectory intersects the patient'"'"'s body defining a first patient entry point; displaying a second transverse axial view of the patient on a second portion of the display device, the second transverse axial view of the patient being a display of a second two-dimensional image slice from said plurality of two-dimensional image slices of the patient where the linear trajectory intersects the patient'"'"'s body at a first target point within the patient; and
,displaying a first oblique view of the patient on the display device, the first oblique view of the patient being a display of a first plane within said image volume data set co-planar with a line defined by said trajectory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of planning a minimally invasive surgical procedure for introducing an object along a trajectory from a patient entry point to a target point within the patient, the method comprising the steps of:
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using an imaging device, scanning the patient to generate an image volume data set of an area of the patient; using a stereotactic assembly mounted on one end in a fixed relationship to the imaging device and having a surgical planning device defining a linear trajectory on the other end of the assembly, positioning the surgical planning device adjacent the patient; displaying a first transverse axial view of the patient on a first portion of a display device, the first transverse axial view of the patient being a display of a first two-dimensional image slice from said image volume data set taken where the linear trajectory intersects the patient defining a patient entry point; displaying a second transverse axial view of the patient on a second portion of the display device the second transverse axial view of the patient being a display of a second two-dimensional image slice from said image volume data set taken where the linear trajectory intersects the patient at a first target point within the patient; displaying a first oblique axial/coronal view of the patient on a third portion of the display device, the first oblique axial/coronal view of the patient being a display of a first plane within said image volume data set co-planar with said trajectory from said patient entry point to said target point within the patient; and
,displaying a first oblique coronal/sagittal view of the patient on a fourth portion of the display device, the first oblique coronal/sagittal view of the patient being a display of a second plane through said image volume data set that is co-planar with the trajectory between said patient entry point and the first target point within the patient and is substantially sagittal in orientation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of planning a surgical procedure for inserting an object into a patient along a surgical planning trajectory from an entry point on the patient to a target point within the patient, the method comprising the steps of:
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using an imaging device, scanning the patient to generate an image volume data set of an area of the patient; using an associated surgical planning device disposed in a first position relative to the patient, defining a linear planning trajectory extending from the planning device and through the patient; displaying a first oblique sectional image of the patient co-planar with the linear planning trajectory, the first sectional image being derived from said image volume data set based on said first position of the surgical planning device relative to the patient; and
,displaying a second oblique sectional image of the patient co-planar with the linear planning trajectory, the second sectional image being derived from said image volume data set based on said first position of the surgical planning device relative to the patient. - View Dependent Claims (20, 21, 22)
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23. A method of planning an interventional procedure for inserting a surgical tool into a patient along an interventional planning trajectory from a patient entry point towards a target point within the patient, the method comprising the steps of:
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providing an image volume data set representative of a multi-dimensional view of the patient; defining a linear interventional planning trajectory extending from a first patient entry point to a first target point; deriving first and second sectional images of the patient from said image volume data set, the first and second sectional images intersecting at a line defined by said linear interventional planning trajectory; and
,displaying at least one of the first and second sectional images. - View Dependent Claims (24)
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25. A surgical procedure planning apparatus for use in inserting an object into a patient along a surgical planning trajectory from an entry point on the patient to a target point within the patient, the planning apparatus comprising:
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an imaging device for scanning the patient to generate an image volume data set of an area of the patient; a surgical planning device, disposed in a first position relative to the patient, for defining a linear planning trajectory extending from the planning device and through the patient; means for displaying a first oblique sectional image of the patient co-planar with the linear planning trajectory, the first sectional image being derived from said image volume data set based on said first position of the surgical planning device relative to the patient; and
,means for displaying a second oblique sectional image of the patient co-planar with the linear planning trajectory, the second sectional image being derived from said image volume data set based on said first position of the surgical planning device relative to the patient. - View Dependent Claims (26, 27, 28)
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29. A method of surgical procedure planning for planning insertion of an object into a patient along a surgical planning trajectory from an entry point on the patient to a target point within the patient, the method comprising the steps of:
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scanning the patient to generate an image volume data set of an area of the patient; defining a linear planning trajectory extending in a first position through said image volume data set of the area of the patient; displaying a first oblique sectional image of the patient co-planar with the linear planning trajectory, the first sectional image being derived from said image volume data set based on said first position of the linear planning trajectory relative to said area of the patient; and
,displaying a second oblique sectional image of the patient co-planar with the linear planning trajectory, the second sectional image being derived from said image volume data set based on said first position of the linear planning trajectory relative to said area of the patient. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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Specification