Abstract #2693

Multi-echo BOLD Index: Figuring out false positive and providing detailed activation patterns in task fMRI

Wenchao Yang¹, Burak Akin¹, Xiang Gao¹, Benedikt Poser², and Jürgen Hennig¹

¹Department of Radiology, Medical Physics, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany, ²Maastricht Brain Imaging Centre, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands

We introduced a BOLD Index in this abstract. This index can figure out the false positive/non-BOLD voxels from standard fMRI t-test results. It can also provide detailed cortex active patterns. The BOLD Index high value is always marked on gray matter, while, the t-test high value is marked on the CSF or vein in cortex fissure or sulci. T-test answers the question of which voxel is active. The BOLD index tells whether the voxel's response is true BOLD or non-BOLD and how strong.

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