Characterization of the Echo-Time Dependence of Spin-Echo BOLD Fmri at 3 Tesla in Grey and White Matter.

Josephine L. Tan,Don M. Ragot,J. Jean Chen

Journal of neuroscience methods（2022）

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摘要

• We characterize the regional-specific behavior of the spin-echo (SE) EPI BOLD fMRI sensitivity in grey and white matter . • We inducing global BOLD responses in 7 healthy adults using hypercapnia. • SE-BOLD sensitivity is not maximized at tissue T 2 , as is widely assumed. • Our findings suggest the use of significantly shorter TEs than tissue T 2 for grey and white matter.

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关键词

Spin-echo echo-planar imaging,BOLD fMRI,Temporal lobe,Orbitofrontal lobe,Echotime optimization,White matter fMRI,Contrast-to-noise ratio,BOLD sensitivity,Susceptibility artifact,Intravenous BOLD,Physiological noise

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