Tohoku University Cognitive Neuroscience Application Center

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Checking parameters

Preprocessing of fMRI data

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Check fMRI parameters for analyses!

• TR (Repetition Time): the interval time between succesive pulse, a repeating scanning time for a whole brain
• Number of Slice: the image number for a whole brain
• voxel size: the unit size of scanning
• Slice order: the order of scanning (ascending: starting from bottom, descending: starting from top, or entering slice numbers)
• Slice gap: how many slices are interleaved

The following parameters may not be used in analyses, but should be described in a paper

• TE (Echo Time): the time interval between radiofrequency excitation pulse and the peak of signal induced 
• flip angle: the rotation angle at which the magnetic field is applied to the protons
• FOV (Field of View): the size of the slice image

In the sample data,

• TR：2500ms
• Number of Slice: 40
• voxel size: 3 * 3 * 3 (mm)
• Slice order: 1:40（ascending, described as 'FH' in the console）
• Slice gap: 0
• TE: 30ms
• flip angle: 85
• FOV: 192mm

How to check with MRI console PC

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