Accelerated simultaneous multislice imaging via linear phase modulated extended field of view (SMILE)
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsShen Zhao, Michael Salerno, Junyu Wang
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Abstract
A method for simultaneous multislice (SMS) magnetic resonance imaging (MRI) acquisition and image reconstruction includes a) using an MRI apparatus, simultaneously i) exciting multiple imaging slices with a phase modulation strategy used to distribute the image content over an extended phase-encoding field of view (FOV), and ii) acquiring data from the multiple slices using a sampling strategy comprising a k-space under-sampling pattern over an extended phase-encoding FOV k-space matrix; and b) reconstructing images comprising the multiple slices over the extended phase-encoded FOV using an image reconstruction technique.
Claims13
A method for simultaneous multislice (SMS) magnetic resonance imaging (MRI) acquisition and image reconstruction comprising:
- (a) using an MRI apparatus, simultaneously
- i) exciting multiple imaging slices with a phase modulation strategy used to distribute image content over an extended phase-encoding field of view (FOV);
- and
- ii) acquiring data from the multiple imaging slices using a sampling strategy comprising an arbitrary k-space under-sampling pattern over an extended phase-encoding FOV k-space matrix that is expanded in the phase-encoding dimension relative to a single-slice FOV k-space matrix to encompass multiple respective regions of interest of the multiple imaging slices without mutual overlap in a fully-sampled extended FOV image;
- and
- (b) reconstructing images comprising the multiple imaging slices over the extended phase-encoding FOV by transforming the acquisition of the multiple imaging slices into a two-dimensional de-aliasing task using an image reconstruction technique.
A method for magnetic resonance imaging comprising performing with an MRI apparatus simultaneous multislice (SMS) acquisition and image reconstruction, characterized in that:
- (a) the SMS acquisition uses Cartesian sampling with variable density and adjustable temporal resolution (CAVA) spatiotemporal sampling and samples in a superposition of multiple linear-phase-modulated k-space with an extended field of view, thereby avoiding abrupt image content change;
- and
- (b) the image reconstruction is high-dimensional fast convolutional framework (HICU) image reconstruction.
Dependencies are inferred from the claim text.