Abstract #1074

Comparison of Spiral and Cartesian k space filling strategies for Time of Flight MR angiography for cervicocerebral arteries – Pilot Study

Ravi Varma Dandu¹, Karthick Raj Rajendran², Rithika Varma Dandu³, Sivakanth Nalubolu⁴, Kiran Barla¹, Narayana Rolla⁵, and Indrajit Saha⁶

¹Citi Neuro Centre, Hyderabad, India, ²Philips Healthcare, Eindhoven, Netherlands, ³RV College of Engineering, Bengaluru, India, ⁴Narayana Health City, Bangalore, India, ⁵Philips Healthcare, Bangalore, India, ⁶Philips Healthcare, Gurgaon, India

This study compares the performance of Time of Flight MR angiography (ToF-MRA) with spiral k-space filling and ToF-MRA with cartesian filling, for evaluation of the cervicocerebral circulation in 16 healthy volunteers. The imaging protocols were adjusted to give similar coverage and scan times for both techniques. Spiral ToF-MRA showed better visualization of almost all arteries of the cervicocerebral circulation – especially in the small distal intracranial arteries. Artefactual signal drops in segments with slow flow were also fewer with spiral ToF-MRA. Spiral ToF-MRA can potentially evaluate the cervicocerebral arterial system with higher spatial resolution than Cartesian ToF-MRA.

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