Adaptive water-fat shift in non-Cartesian magnetic resonance imaging

A computer program comprising machine executable instructions stored on a non-transitory computer readable medium for execution by a computational system, wherein execution of the machine executable instructions causes the computational system to:

• receive initial pulse sequence commands, wherein the initial pulse sequence commands are configured for controlling a magnetic resonance imaging system to acquire k-space data following a non-Cartesian k-space sampling pattern, wherein the initial pulse sequence commands are configured for controlling the magnetic resonance imaging system to sample the non-Cartesian k-space sampling pattern by repeatedly sampling a Cartesian k-space sampling pattern that is rotated for each acquisition, wherein the non-Cartesian k-space sampling pattern has an effective water-fat shift direction being representative for the direction in which the water-fat shift occurs;
• receive a chosen water-fat shift direction;
• and
• construct modified pulse sequence commands by rotating the non-Cartesian k-space sampling pattern such that the effective water-fat shift direction is aligned with the water-fat shift direction.

A method of operating a medical system, wherein the method comprises:

• receiving initial pulse sequence commands, wherein the initial pulse sequence commands are configured for controlling a magnetic resonance imaging system to acquire k-space data following a non-Cartesian k-space sampling pattern, wherein the initial pulse sequence commands are configured for controlling the magnetic resonance imaging system to sample the non-Cartesian k-space sampling pattern by repeatedly sampling a Cartesian k-space sampling pattern that is rotated for each acquisition, wherein the non-Cartesian k-space sampling pattern has an effective water-fat shift direction being representative for the direction in which the water-fat shift occurs;
• receiving a chosen water-fat shift direction;
• and
• constructing modified pulse sequence commands by rotating the non-Cartesian k-space sampling pattern such that the effective water-fat shift direction is aligned with the chosen water-fat shift direction.