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- Title
Cortical depth-dependent gradient-echo and spin-echo BOLD fMRI at 9.4T.
- Authors
Zhao, Fuqiang; Wang, Ping; Kim, Seong-Gi
- Abstract
To examine cortical depth-related spatial specificity and signal changes in gradient-echo (GE) and spin-echo (SE) blood oxygenation level-dependent (BOLD) fMRI signals, a well-established cat visual stimulation model was used at 9.4T. The GE BOLD signal percent change is the highest at the surface of the cortex containing pial vessels, and decreases as cortical depth increases. In contrast, the SE BOLD signal is more specific to parenchyma, showing the highest signal change in the middle cortical areas. The stimulation-induced Δ R
- Publication
Magnetic Resonance in Medicine, 2004, Vol 51, Issue 3, p518
- ISSN
0740-3194
- Publication type
Article
- DOI
10.1002/mrm.10720