Abstract #3637
A simple BOLD contrast model based on functional activation pattern and k-space trajectory
Vimal Singh 1 and David Ress 2
1
Electrical Engineering, University of Texas
at Austin, Austin, Texas, United States,
2
Neuroscience,
Baylor College of Medicine, Hosuton, Texas, United
States
This work presents a simple theory that accounts for the
interaction of any k-space trajectory and echo time on
BOLD contrast. The theory quantifies the need for
different TEs to obtain best contrast for different
acquisition trajectories. It also allows comparison of
BOLD contrast available from different trajectories over
various echo times. The theory was tested by performing
high-resolution fMRI in superior colliculus using a
variety of single- and dual-echo spiral trajectories and
EPI as echo time was varied. . The proposed theory shows
a satisfactory fit to the empirical data.
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