Dual-echo arterial spin labeling (DE-ASL) techniques have been recently proposed for thesimultaneous acquisition of ASL and blood-oxygenation-level-dependent (BOLD) functionalmagnetic resonance imaging (fMRI) data (Woolrich et al., 2006). The images acquired at the firstecho time are perfusion weighted (ASL), while the images from the second echo are primarilyT2* weighted, thus sensitive to the BOLD signal (Leontiev and Buxton, 2007). The sequence isuseful when the simultaneous estimation of blood flow and BOLD signal are targeted. Thepurpose of this study was to assess the sensitivity of the DE-ASL sequence in comparison to theconventional one (BOLD-fMRI) in detecting brain activations elicited by active and motor imageryhand movements.
Functional Sensitivity of Dual-Echo ASL in Localizing Active and Imagery Hand Movements
STORTI, Silvia Francesca;Boscolo Galazzo, Ilaria;PIZZINI, Francesca;MENEGAZ, Gloria
2016-01-01
Abstract
Dual-echo arterial spin labeling (DE-ASL) techniques have been recently proposed for thesimultaneous acquisition of ASL and blood-oxygenation-level-dependent (BOLD) functionalmagnetic resonance imaging (fMRI) data (Woolrich et al., 2006). The images acquired at the firstecho time are perfusion weighted (ASL), while the images from the second echo are primarilyT2* weighted, thus sensitive to the BOLD signal (Leontiev and Buxton, 2007). The sequence isuseful when the simultaneous estimation of blood flow and BOLD signal are targeted. Thepurpose of this study was to assess the sensitivity of the DE-ASL sequence in comparison to theconventional one (BOLD-fMRI) in detecting brain activations elicited by active and motor imageryhand movements.
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