Method and apparatus for performing interventional medical procedures using MR imaging of interventional device superimposed with ghost patient image
First Claim
Patent Images
1. An MRI method comprising:
- positioning an interventional device within the patient image volume of an MRI system while viewing real-time fluoroscopic MR images of such device superimposed on a saved prior image of patient anatomy that was earlier located within the same image volume.
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Abstract
Positioning of interventional devices within the patient image volume of an MRI system is performed while viewing real-time fluoroscopic MR images of such devices superimposed upon a saved prior image ("ghost") of patient anatomy that was earlier located within the same image volume. After such interventional medical procedure is thoroughly planned using the earlier acquired three-dimensional ghost image, the patient anatomy is relocated within the image volume and the final selected trajectory for the interventional device or medical procedure is then performed (preferably while real time MRI fluoroscopy is used to monitor the actual interventional procedure within the real patient anatomy).
50 Citations
34 Claims
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1. An MRI method comprising:
positioning an interventional device within the patient image volume of an MRI system while viewing real-time fluoroscopic MR images of such device superimposed on a saved prior image of patient anatomy that was earlier located within the same image volume. - View Dependent Claims (2, 3)
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4. An MRI method comprising:
superimposing a prior saved image of a first physical field with real-time fluoroscopic MR images of a second physical field. - View Dependent Claims (5, 6, 7)
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8. An MRI method for facilitating the safe introduction of interventional devices into patient anatomy, said method comprising:
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placing patient anatomy within the image volume of an MRI system; creating and saving an MR image of said patient anatomy; removing said patient anatomy from the image volume; locating a desired trajectory for an interventional device within said image volume while superimposing the saved MR image of said patient anatomy with real-time fluoroscopic MR images of the interventional device; removing said interventional device from the MR image of the patient anatomy while retaining an ability to retrace said desired trajectory; returning said patient anatomy to the image volume in substantial registry with its earlier position at the time the saved MR image was created; and introducing said interventional device into said patient anatomy along said desired trajectory. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An MRI apparatus comprising:
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an open structure background MRI magnet allowing lateral access to a patient imaging volume for performance, of interventional procedures; and means for positioning an interventional device within the patient image volume of an MRI system while viewing real-time fluoroscopic MR images of such device superimposed on a saved prior image of patient anatomy that was earlier located within the same image volume. - View Dependent Claims (20, 21)
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22. An MRI apparatus comprising:
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an open structure background MRI magnet allowing lateral access to a patient imaging volume for performance of interventional procedures; and means for superimposing a prior saved image of a first physical field with real-time fluoroscopic MR images of a second physical field. - View Dependent Claims (23, 24, 25)
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26. An MRI apparatus for facilitating the safe introduction of interventional devices into patient anatomy, said apparatus comprising:
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means for placing patient anatomy within the image volume of an MRI system; means for creating and saving an MR image of said patient anatomy; means for removing said patient anatomy from the image volume; means for locating a desired trajectory for an interventional device within said image volume while superimposing the saved MR image of said patient anatomy with real-time fluoroscopic MR images of the interventional device; means for removing said interventional device from the MR image of the patient anatomy while retaining an ability to retrace said desired trajectory; means for returning said patient anatomy to the image volume in substantial registry with its earlier position at the time the saved MR image was created; and means for introducing said interventional device into said patient anatomy along said desired trajectory. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification