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Abstract #4150

Redesigned Cones Trajectory based on Discretization of Cones Coordinate

Kwang Eun Jang1,2, Dwight G. Nishimura2, and Shreyas S. Vasanawala3

1Department of Bioengieering, Stanford University, Stanford, CA, United States, 2Magnetic Resonance Systems Research Lab (MRSRL) in Department of Electrical Engineering, Stanford University, Stanford, CA, United States, 3Department of Radiology, Stanford University, Stanford, CA, United States

We propose a new non-Cartesian sampling scheme based on a 3D cones k-space trajectory. The design framework uses a cones coordinate system that uniquely represents a point in 3D k-space with a rotation of a spiral that resides on a conic surface. The new trajectory is obtained by discretizing the proposed coordinate system. Incorporation of a variable-density spiral improves the sampling efficiency. Simulations and phantom studies demonstrate the improved efficiency of the new scheme compared to the conventional cones design.

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