Meeting Banner
Abstract #0577

Acceleration Selective Arterial Spin Labeling

SUMMA25Sophie Schmid1, Eidrees Ghariq1, Wouter M. Teeuwisse1, Andrew Webb1, Matthias J.P. van Osch1, 2

1C.J. Gorter Center for High Field MRI, Dept. of Radiology, Leiden University Medical Center, Leiden, Netherlands; 2Leiden Institute of Brain and Cognition, Leiden, Netherlands

As opposed to Velocity Selective Arterial Spin Labeling (ASL), which labels both arterial and venous blood, a new ASL technique is demonstrated, called AccASL, which labels flowing spins based on acceleration. It has been shown that the proposed AccASL is a promising method to enable measurement of the perfusion with spatially non-selective labeling, elimination of venous label and high signal intensity in grey matter.

Keywords

absent acceleration acquisition advantages affairs almost although angiography applied arterial arteries background basis blood brain called capability capillaries cerebral channel choice close cognition collateral comparable completely components conditions consisted continuous control critical cutoff decelerated decreased delay dependent depicted dept design determine diastole difficult diffusion discriminate division double drawback dual duration dutch economic efficiency efficiently eliminate eliminates enable errors especially even example exclude exclusively field flow foundation fourth generate generated giving gradient gradients healthy improves inability instead institute intensity investigates label labeling localization long magnetization maps mask materials measures medical mentioned ministry module moment moreover motion nevertheless optimization part perfusion preparation priest program promising proposed pseudo pulse pulses quantification quantitative radiology recently remains scanner science selected selective selectively selectivity semi sensitivity sensitizing sign significantly since sinus slice slow spatial spatially spin spins statistical strength subtracted suffer supported suppression systole tags technology thresholded transit triggered vascular velocity venous visible volunteer volunteers yielding zero