An algorithm for variable density sampling with block-constrained acquisition

Understand

Reducing acquisition time is of fundamental importance in various imaging modalities.

• The concept of variable density sampling provides a nice framework to achieve this.
• It was justified recently from a theoretical point of view in the compressed sensing (CS) literature.
• Unfortunately, the sampling schemes suggested by current CS theories may not be relevant since they do not take the acquisition constraints into account (for example, continuity of the acquisition trajectory in Magnetic Resonance Imaging - MRI).