Abstract #4150

Redesigned Cones Trajectory based on Discretization of Cones Coordinate

Kwang Eun Jang^1,2, 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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