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Abstract #1042

Single-Shot Spiral Arterial Spin Labeling MRI Enabled by Concurrent Field Monitoring

Mustafa Cavusoglu1, Lars Kasper1, and Klaas Paul Pruessmann1

1Institute of Biomedical Engineering, ETH Zurich, Zurich, Switzerland

Spiral k-space sampling holds great potential for many MRI applications particularly for arterial spin labeling which has inherently very low SNR. Besides providing significant increase in SNR by reducing the echo time and readout durations, spiral trajectories with single shot acquisitions are highly robust against motion artifacts. However their sensitivity to encoding deficiencies such as B0 off-resonance, field drifts, eddy currents, gradient coupling, gradient delays and concomitant fields prevents their utilization effectively in practice. In this work, we provide ASL with single-shot spiral readouts that are robust against all those deficiencies by using dynamic field monitoring concurrent with image acquisition.

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