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Abstract #0367

Dual-echo simultaneous multi-slice spiral acquisition for simultaneous CBF and BOLD fMRI at 7T

Denizhan Kurban1, Gilad Liberman1, Sriranga Kashyap1, Dimo Ivanov1, and Benedikt A Poser1

1Maastricht University, Maastricht, Netherlands

Dual-echo acquisition with arterial spin labelling (ASL) allows for simultaneous measurements of CBF and BOLD signal changes which are helpful to understand the cerebral haemodynamics in health and disease. At ultra-high field (≥7T), however, this becomes impractical with established EPI based techniques since the readout duration precludes the use of appropriate echo times at commonly desired spatial resolutions. Single-shot spiral imaging presents a promising alternative: it allows the CBF signal to be acquired at very short TE while providing a flexible choice of TE for the second BOLD echo. In this work we show a dual-echo simultaneous multi-slice spiral out-in sequence for the acquisition of CBF and BOLD signals.

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