System and method for image-based interventional device tracking and scan plane guidance
First Claim
Patent Images
1. An MRI system comprising:
- a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field;
an RF transceiver system and an RF switch controlled by a pulse module designed to transmit and receive RF signals to and from an RF coil assembly;
a computer having a program loaded thereon which, when executed by the computer, causes the computer to;
acquire a number of 2D MR projections from the transceiver system, the number of 2D MR projections being in acquisition planes at differing angles;
locate and determine an orientation of a continuous portion of an interventional device using the 2D MR projections;
define a scan plane of interest with respect to the location and orientation of the continuous portion of the interventional device;
determine a location and an orientation of a target plane of a scan subject; and
display a relationship of the scan plane of interest to the target plane.
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Abstract
An MR system and method for tracking a device of an interventional procedure within a scan subject is disclosed. At least two MR projections of the device are acquired, from which 3D coordinates of the device are determined. Subsequent image acquisition is adjusted with respect to the coordinates of the device to guide movement thereof towards target anatomy. The present system and method provide the ability to locate and visualize continuous portions of an interventional device in 3D, and do not require the use of embedded RF localizing coils.
6 Citations
20 Claims
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1. An MRI system comprising:
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a plurality of gradient coils positioned about a bore of a magnet to impress a polarizing magnetic field; an RF transceiver system and an RF switch controlled by a pulse module designed to transmit and receive RF signals to and from an RF coil assembly; a computer having a program loaded thereon which, when executed by the computer, causes the computer to; acquire a number of 2D MR projections from the transceiver system, the number of 2D MR projections being in acquisition planes at differing angles; locate and determine an orientation of a continuous portion of an interventional device using the 2D MR projections; define a scan plane of interest with respect to the location and orientation of the continuous portion of the interventional device; determine a location and an orientation of a target plane of a scan subject; and display a relationship of the scan plane of interest to the target plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for tracking an interventional device comprising:
- acquiring at least two non-coplanar MR images;
locating an interventional device in the at least two images;
reconstructing a 3D shape and orientation of the interventional device from the at least two images;
determining a plane of interest with respect to the device; and
adjusting MR image acquisition to the plane of interest to track movement of the interventional device, wherein the target plane is defined by a desired eventual orientation for the device, favorable to an interventional procedure.
- acquiring at least two non-coplanar MR images;
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11. A non-transitory computer readable storage medium having an MR guidance interface stored thereon, the interface comprising:
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an MR projection acquisition control; a device detection tool configured to indicate a location of an interventional device in a first MR projection and a location of the device in a second MR projection; a 3D reconstructor programmed to determine 3D coordinates of the device from only the MR projections, without the use of RF coils embedded in the interventional device; a user input to define a scan plane with respect to the 3D coordinates of the device; and a guidance window configured to display the scan plane and a target plane. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification