initialize_2D_propeller

mrinufft.trajectories.trajectory2D.initialize_2D_propeller(Nc, Ns, nb_strips)

Initialize a 2D PROPELLER trajectory, as proposed in [Pip99].

The PROPELLER trajectory is generally used along a specific reconstruction pipeline described in [Pip99] to correct for motion artifacts.

The acronym PROPELLER stands for Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction, and the method is also commonly known under other aliases depending on the vendor, with some variations: BLADE, MulitVane, RADAR, JET.

Parameters:

• Nc (int) – Number of shots

• Ns (int) – Number of samples per shot

• nb_strips (int) – Number of rotated strips, must divide Nc

References

[Pip99] (1,2)

Pipe, James G. “Motion correction with PROPELLER MRI: application to head motion and free‐breathing cardiac imaging.” Magnetic Resonance in Medicine 42, no. 5 (1999): 963-969.