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Errors in cerebral blood flow determinations by xenon-enhanced computed tomography due to estimation of arterial xenon concentrations.

作者信息

Good W F, Gur D, Yonas H, Herron J M

出版信息

Med Phys. 1987 May-Jun;14(3):377-81. doi: 10.1118/1.596051.

DOI:10.1118/1.596051
PMID:3496520
Abstract

Errors in the determination of xenon concentrations in arterial blood during inhalation of xenon-oxygen mixtures are used to assess errors in the derivation of regional cerebral blood flow by the xenon-enhanced computed tomography (CT) method. The results of this study indicate that approximating the arterial buildup by a single exponential introduces relatively small errors in estimated flow values. The most significant systematic error is introduced by errors in estimation of the xenon arrival time to the brain in relationship to sequential (CT) scanning times.

摘要

相似文献

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Errors in cerebral blood flow determinations by xenon-enhanced computed tomography due to estimation of arterial xenon concentrations.
Med Phys. 1987 May-Jun;14(3):377-81. doi: 10.1118/1.596051.
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