Method and system for tracking small coils using magnetic resonance
AssigneeGeneral Electric Company
InventorCharles Lucian Dumoulin
Life of this patent
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Abstract
A method and system for tracking the location of a device within the field of view of a Magnetic Resonance Imaging (MRI) system are provided. The method comprises computing a centroid of signal intensity in a region centered about a location of maximum signal intensity, Lmax of acquired magnetic resonance (MR) signals corresponding to the device.
Claims11
A method for tracking the location of a device within the field of view of a Magnetic Resonance Imaging (MRI) system comprising:
- computing a centroid of signal intensity in a region centered about a location of maximum signal intensity, Lmax of acquired magnetic resonance (MR) signals from the device;
- and,
- locating the device based on the signal intensity.
A method for tracking the location of a device within the field of view (FOV) of a Magnetic Resonance Imaging (MRI) system comprising:
- finding a location of maximum signal intensity, Lmax of acquired magnetic resonance (MR) signals from to the device;
- determining an approximate number of pixels which cover the length of the device, C;
- selecting an expansion factor, F, which when multiplied by C will provide a region W, W being centered at Lmax and having a length sufficient to encompass all the signals from the device;
- computing a location of a centroid, Lcent of signal intensity in the region W centered about the location Lmax in accordance with:
- L cent = ∑ i = L max - W / 2 L max + W / 2 i * Intensity ( i ) ∑ i = L max - W / 2 L max + W / 2 Intensity ( i )
- where intensity(i) is a pixel intensity of the ith data point in the projection;
- and,
- locating the device based on the signal intensity.
A system for tracking the location of a device within the field of view (FOV) of a Magnetic Resonance Imaging (MRI) system comprising:
- a locator sub-system adapted to compute a centroid of signal intensity in a region centered about a location of maximum signal intensity, Lmax of acquired magnetic resonance (MR) signals from the device and locate the device based on the signal intensity;
- and,
- a display device coupled to the locator sub-system for displaying the location of the device.
Dependencies are inferred from the claim text.