Volume 44, Issue 3 pp. 450-456
Full Paper

H215O PET validation of steady-state arterial spin tagging cerebral blood flow measurements in humans

Frank Q. Ye

Frank Q. Ye

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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Karen Faith Berman

Karen Faith Berman

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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Timothy Ellmore

Timothy Ellmore

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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Giuseppe Esposito

Giuseppe Esposito

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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John D. van Horn

John D. van Horn

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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Yihong Yang

Yihong Yang

Laboratory of Diagnostic Radiology Research, Clinical Center, National Institutes of Health, Bethesda, Maryland

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Jeff Duyn

Jeff Duyn

Laboratory of Diagnostic Radiology Research, Clinical Center, National Institutes of Health, Bethesda, Maryland

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Anne M. Smith

Anne M. Smith

Laboratory of Diagnostic Radiology Research, Clinical Center, National Institutes of Health, Bethesda, Maryland

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Joseph A. Frank

Joseph A. Frank

Laboratory of Diagnostic Radiology Research, Clinical Center, National Institutes of Health, Bethesda, Maryland

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Daniel R. Weinberger

Daniel R. Weinberger

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

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Alan C. McLaughlin

Corresponding Author

Alan C. McLaughlin

Clinical Brain Disorders Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland

Building 10, Room B1D-69, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892===Search for more papers by this author

Abstract

Steady-state arterial spin tagging approaches can provide quantitative images of CBF, but have not been validated in humans. The work presented here compared CBF values measured using steady-state arterial spin tagging with CBF values measured in the same group of human subjects using the H215O IV bolus PET method. Blood flow values determined by H215O PET were corrected for the known effects of incomplete extraction of water across the blood brain barrier. For a cortical strip ROI, blood flow values determined using arterial spin tagging (64 ± 12 cc/100g/min) were not statistically different from corrected blood flow values determined using H215O PET (67 ± 13 cc/100g/min). However, for a central white matter ROI, blood flow values determined using arterial spin tagging were significantly underestimated compared to corrected blood flow values determined using H215O PET. This underestimation could be caused by an underestimation of the arterial transit time for white matter regions. Magn Reson Med 44:450–456, 2000. Published 2000 Wiley-Liss, Inc.

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