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AJNR - American Journal of Neuroradiology

Publication Preview: Published February 4, 2009

American Journal of Neuroradiology 2009;30:968.

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American Journal of Neuroradiology
DOI 10.3174/ajnr.A1454

BRAIN

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

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

From the Departments of Radiology (S.G., C.B.L.M.M., C.L., A.J.N.) and Pediatrics (X.W.v.d.T.), 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.