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- Publisher Website: 10.1002/mrm.21655
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- PMID: 18666102
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Article: Evaluation of MRI models in the measurement of CMRO2 and its relationship with CBF
Title | Evaluation of MRI models in the measurement of CMRO2 and its relationship with CBF |
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Authors | |
Keywords | Cerebral blood flow Cerebral metabolism MRI PET |
Issue Date | 2008 |
Publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/ |
Citation | Magnetic Resonance In Medicine, 2008, v. 60 n. 2, p. 380-389 How to Cite? |
Abstract | The aim of this study was to investigate the various MRI biophysical models in the measurements of local cerebral metabolic rate of oxygen (CMRO 2) and the corresponding relationship with cerebral blood flow (CBF) during brain activation. This aim was addressed by simultaneously measuring the relative changes in CBF, cerebral blood volume (CBV), and blood oxygen level dependent (BOLD) MRI signals in the human visual cortex during visual stimulation. A radial checkerboard delivered flash stimulation at five different frequencies. Two MRI models, the single-compartment model (SCM) and the multicompartment model (MCM), were used to determine the relative changes in CMRO2 using three methods: [1] SCM with parameters identical to those used in a prior MRI study (M = 0.22; α = 0.38); [2] SCM with directly measured parameters (M from hypercapnia and α from measured δCBV and δCBF); and [3] MCM. The magnitude of relative changes in CMRO2 and the nonlinear relationship between CBF and CMRO2 obtained with Methods [2] and [3] were not in agreement with those obtained using Method [1]. However, the results of Methods [2] and [3] were aligned with positron emission tomography findings from the literature. Our results indicate that if appropriate parameters are used, the SCM and MCM models are equivalent for quantifying the values of CMRO2 and determining the flow-metabolism relationship. © 2008 Wiley-Liss, Inc. |
Persistent Identifier | http://hdl.handle.net/10722/179524 |
ISSN | 2021 Impact Factor: 3.737 2020 SCImago Journal Rankings: 1.696 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lin, AL | en_US |
dc.contributor.author | Fox, PT | en_US |
dc.contributor.author | Yang, Y | en_US |
dc.contributor.author | Lu, H | en_US |
dc.contributor.author | Tan, LH | en_US |
dc.contributor.author | Gao, JH | en_US |
dc.date.accessioned | 2012-12-19T09:58:12Z | - |
dc.date.available | 2012-12-19T09:58:12Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Magnetic Resonance In Medicine, 2008, v. 60 n. 2, p. 380-389 | en_US |
dc.identifier.issn | 0740-3194 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/179524 | - |
dc.description.abstract | The aim of this study was to investigate the various MRI biophysical models in the measurements of local cerebral metabolic rate of oxygen (CMRO 2) and the corresponding relationship with cerebral blood flow (CBF) during brain activation. This aim was addressed by simultaneously measuring the relative changes in CBF, cerebral blood volume (CBV), and blood oxygen level dependent (BOLD) MRI signals in the human visual cortex during visual stimulation. A radial checkerboard delivered flash stimulation at five different frequencies. Two MRI models, the single-compartment model (SCM) and the multicompartment model (MCM), were used to determine the relative changes in CMRO2 using three methods: [1] SCM with parameters identical to those used in a prior MRI study (M = 0.22; α = 0.38); [2] SCM with directly measured parameters (M from hypercapnia and α from measured δCBV and δCBF); and [3] MCM. The magnitude of relative changes in CMRO2 and the nonlinear relationship between CBF and CMRO2 obtained with Methods [2] and [3] were not in agreement with those obtained using Method [1]. However, the results of Methods [2] and [3] were aligned with positron emission tomography findings from the literature. Our results indicate that if appropriate parameters are used, the SCM and MCM models are equivalent for quantifying the values of CMRO2 and determining the flow-metabolism relationship. © 2008 Wiley-Liss, Inc. | en_US |
dc.language | eng | en_US |
dc.publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/ | en_US |
dc.relation.ispartof | Magnetic Resonance in Medicine | en_US |
dc.subject | Cerebral blood flow | - |
dc.subject | Cerebral metabolism | - |
dc.subject | MRI | - |
dc.subject | PET | - |
dc.subject.mesh | Adult | en_US |
dc.subject.mesh | Cerebrovascular Circulation - Physiology | en_US |
dc.subject.mesh | Computer Simulation | en_US |
dc.subject.mesh | Evoked Potentials, Visual - Physiology | en_US |
dc.subject.mesh | Female | en_US |
dc.subject.mesh | Humans | en_US |
dc.subject.mesh | Image Interpretation, Computer-Assisted - Methods | en_US |
dc.subject.mesh | Magnetic Resonance Imaging - Methods | en_US |
dc.subject.mesh | Male | en_US |
dc.subject.mesh | Models, Neurological | en_US |
dc.subject.mesh | Oxygen Consumption - Physiology | en_US |
dc.subject.mesh | Visual Cortex - Physiology | en_US |
dc.title | Evaluation of MRI models in the measurement of CMRO2 and its relationship with CBF | en_US |
dc.type | Article | en_US |
dc.identifier.email | Tan, LH: tanlh@hku.hk | en_US |
dc.identifier.authority | Tan, LH=rp01202 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1002/mrm.21655 | en_US |
dc.identifier.pmid | 18666102 | - |
dc.identifier.scopus | eid_2-s2.0-49049116105 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-49049116105&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 60 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 380 | en_US |
dc.identifier.epage | 389 | en_US |
dc.identifier.isi | WOS:000258105800018 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Lin, AL=16835064700 | en_US |
dc.identifier.scopusauthorid | Fox, PT=7402680249 | en_US |
dc.identifier.scopusauthorid | Yang, Y=7409387192 | en_US |
dc.identifier.scopusauthorid | Lu, H=8386439700 | en_US |
dc.identifier.scopusauthorid | Tan, LH=7402233462 | en_US |
dc.identifier.scopusauthorid | Gao, JH=7404475674 | en_US |
dc.identifier.citeulike | 3738976 | - |
dc.identifier.issnl | 0740-3194 | - |