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AJNR - American Journal of Neuroradiology

Published ahead of print on February 4, 2009
doi: 10.3174/ajnr.A1454

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American Journal of Neuroradiology 30:968-971, May 2009
© 2009 American Society of Neuroradiology

Technical Note
BRAIN

Acquisition Time and Reproducibility of Continuous Arterial Spin-Labeling Perfusion Imaging at 3T

S. Gevers^a, C.B.L.M. Majoie^a, X.W. van den Tweel^b, C. Lavini^a and A.J. Nederveen^a

^a Department of Radiology, Academic Medical Center, Amsterdam, the Netherlands
^b Department of Pediatrics, Academic Medical Center, Amsterdam, the Netherlands

Please address correspondence to S. Gevers, MD, Department of Radiology, G1–215, Academic Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands; e-mail: s.gevers{at}amc.uva.nl

SUMMARY: Arterial spin-labeling (ASL) is a relatively new and noninvasive MR imaging technique, used to measure cerebral blood flow (CBF). Scanning time and reproducibility remain important issues in the clinical applicability of ASL. We expected both to benefit from higher field strengths. We describe that when performing ASL at 3T, 20 averages suffice to obtain steady and reproducible CBF values. Scanning time can be as short as 3 minutes.