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Cerebral venous and arterial blood volumes can be estimated separately in humans using magnetic resonance imaging
Author(s) -
An Hongyu,
Lin Weili
Publication year - 2002
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10257
Subject(s) - nuclear magnetic resonance , gradient echo , magnetic resonance imaging , cerebral blood volume , spin echo , sequence (biology) , pulse sequence , contrast (vision) , echo time , susceptibility weighted imaging , cerebral veins , blood volume , nuclear medicine , physics , medicine , chemistry , radiology , optics , cardiology , biochemistry
Approaches to obtain quantitative, noninvasive estimates of total cerebral blood volume (tCBV) and cerebral venous blood volume (vCBV) separately in humans are proposed. Two sequences were utilized, including a 3D high‐resolution gradient‐echo (GE) sequence and a 2D multi‐echo GE/spin‐echo (MEGESE) sequence. Images acquired by the former sequence provided an estimate of background magnetic field variations (Δ B ), while images obtained by the latter sequence were utilized to obtain separate measures of tCBV and vCBV with and without contrast agent. Prior to the calculation of vCBV and tCBV, the acquired images were corrected for signal loss induced by the presence of Δ B . vCBV and tCBV were estimated to be 2.46% ± 0.28% and 3.20% ± 0.41%, respectively, after the Δ B correction, which in turn provided a vCBV/tCBV ratio of 0.77 ± 0.04, in excellent agreement with results reported in the literature. Our results demonstrate that quantitative estimates of vCBV and tCBV can be obtained in vivo. Magn Reson Med 48:583–588, 2002. © 2002 Wiley‐Liss, Inc.