Multi-Echo Pseudo-Golden Angle Stack of Stars Thermometry with High Spatial and Temporal Resolution Using k-Space Weighted Image Contrast
AssigneesSiemens Healthcare GmbH, University of Utah Research Foundation
InventorsBradley Drake Bolster, JR., Dennis L. Parker, Allison Payne, Bryant Svedin
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Abstract
A method for producing an image of a subject using a magnetic resonance imaging (MRI) system includes acquiring a series of echo signals by sampling k-space along radial lines that each pass through the center of k-space. Each projection of the radial lines is divided into multiple echoes and successive projections are spaced by a predetermined angular distance. The series of echo signals are reconstructed into a plurality of images, wherein each image corresponds to a distinct echo signal.
Claims24
A method for producing an image of a subject using a magnetic resonance imaging (MRI) system, the method comprising:
- acquiring a series of echo signals by sampling k-space along radial lines that each pass through the center of k-space, wherein each projection of the radial lines is divided into multiple echoes and successive projections are spaced by a predetermined angular distance;
- reconstructing the series of echo signals into a plurality of images, wherein each image corresponds to a distinct echo signal.
A method for performing thermometry using a magnetic resonance imaging (MRI) system, the method comprising:
- acquiring a series of echo signals by sampling k-space along each projection in a series of projections using a stack of stars sequence, wherein successive projections in the series of projections are spaced apart by an angular distance equal to a pseudo golden angle;
- and
- calculating proton resonance frequency temperature change in the subject using phase information from the series of echo signals.
A system for reconstructing magnetic resonance imaging data, the system comprising:
- an imaging device comprising a plurality of coils configured to acquire a series of echo signals by sampling k-space along each projection in a series of projections using a stack of stars sequence, wherein successive projections in the series of projections are spaced apart by an angular distance equal to a pseudo golden angle;
- and
- a central computer configured to reconstruct the plurality of echo signals into a plurality of images, wherein each image corresponds to a distinct echo signal.
Dependencies are inferred from the claim text.