NDLI: Assessment of Hemodynamic Response during Focal Neural Activity in Human Using Bolus Tracking, Arterial Spin Labeling and BOLD Techniques

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Assessment of Hemodynamic Response during Focal Neural Activity in Human Using Bolus Tracking, Arterial Spin Labeling and BOLD Techniques

Content Provider	Semantic Scholar
Author	Li, Tie-Qiang Haefelin, Tobias Neumann Chan, Bernard Chi-Cheung Kastrup, Andreas Moseley, Michael E.
Copyright Year	2000
Abstract	In this study, the hemodynamic response and changes in oxidative metabolism during functional activation were measured using three functional magnetic resonance imaging (fMRI) techniques: the blood oxygenation level-dependent (BOLD) technique, flow-sensitive alternating inversion recovery (FAIR), and bolus tracking (BT) of an MR contrast agent. With these three techniques we independently determined changes in BOLD signal, relative cerebral blood flow (rCBF), and cerebral blood volume (rCBV) associated with brain activation in eight healthy volunteers. In the motor cortex, the BOLD signal increased by 1.8 +/- 0.5%, rCBF by 36.3 +/- 8.2% (FAIR), and 35.1 +/- 8.6% (BT), and rCBV by 19.4 +/- 4.1% (BT) in response to simultaneous bilateral finger tapping. In the visual cortex, BOLD signal increased by 2.6 +/- 0.5%, rCBF by 38.5% +/- 7.6 (FAIR), and 36.9 +/- 8.8% (BT), and rCBV by 18.8 +/- 2.8% (BT) during flickering checkerboard stimulation. Comparing the experimentally measured rCBV with the calculated rCBV using Grubb's power-law relation, we conclude that the use of power-law relationship results in systematic underestimate of rCBV.
Starting Page	442
Ending Page	451
Page Count	10
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://api.elsevier.com/content/article/pii/S1053811900906347
Alternate Webpage(s)	https://www.sciencedirect.com/science/article/pii/S1053811900906347?dgcid=api_sd_search-api-endpoint
Alternate Webpage(s)	http://spin.ecn.purdue.edu/fmri/PDFLibrary/LiTQ_NI_2000_442_451.pdf
PubMed reference number	10988038v1
Alternate Webpage(s)	https://doi.org/10.1006/nimg.2000.0634
DOI	10.1006/nimg.2000.0634
Journal	NeuroImage
Volume Number	12
Language	English
Access Restriction	Open
Subject Keyword	Cell Respiration Cerebral Blood Volume Cerebral cortex Cerebrovascular Circulation Contrast Media Hemodynamics Magnetic Resonance Imaging Multimodal Imaging Oxygen Photopsia fMRI
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Assessment of Hemodynamic Response during Focal Neural Activity in Human Using Bolus Tracking, Arterial Spin Labeling and BOLD Techniques

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