Self-gated 2D lung imaging using single petal rosette trajectory

Motivation: Major limitation of lung MRI is respiratory motion which can be overcome by retrospective self-gating approaches. Goal(s): Achieving sufficient SNR values in the parenchyma is crucial for clinical evaluations and the assessment of physiological parameters. Approach: This abstract presents a single-petal rosette UTE trajectory that is evaluated for k-space-, as well as image-based, retrospective self-gated lung imaging in comparison to the radial UTE trajectory. Results: Higher SNR values and sharpness are obtained when using the SPR trajectory, compared to radial UTE sampling approaches at constant temporal resolution. Impact: This abstract presents a single-petal rosette UTE trajectory (SPR) for 2D self-gated lung imaging, yielding higher SNR and sharpness in comparison to radial UTE sampling approaches.