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The quality of high-resolution Echo Planar images of the human brain has improved greatly in recent years, enabled by novel multi-channel receiver coil arrays and parallel imaging. However, in regions with local field inhomogeneity, EPI artifacts limit which parts of the brain can be imaged successfully. In this work, we present evidence that certain image artifacts can be attributed to nonlinear...
We introduce Wave-CAIPI acquisition-reconstruction technique to accelerate 3D MR Imaging by an order of magnitude, with negligible noise amplification and image artifact penalties. Wave-CAIPI involves playing sinusoidal Gy and Gz gradients during the readout of each phase encoding line while modifying the phase encoding strategy to incur slice shifts as in 2D-CAIPI. This combination spreads out aliasing...
Accelerating magnetic resonance imaging (MRI) by reducing the number of acquired k-space scan lines benefits conventional MRI significantly by decreasing the time subjects remain in the magnet. In this paper, we formulate a novel method for Joint estimation from Undersampled LinEs in Parallel MRI (JULEP) that simultaneously calibrates the GeneRalized Autocalibrating Partially Parallel Acquisitions...
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