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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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