Center for Functional MRI In the Department of Radiology

Field Mapping

There are currently two field map protocols available at CFMRI. The table below compares the two protocols.

  Protocol 1 (older)
(2dFLASH based)
Protocol 2  (recent)
(GRASS based)
Available on Scanner 3teast  and 3twest   3teast  and 3twest  
Scans fm_TE1_NFS (1:08)
fm_TE2_NFS (1:08)
AssetCal (0:06)
fm_grass (1:10)
Total Scan Time 2:16 1:16
Coil BODY coil 8channel HRBRAIN
Post Processing files
(requires :
Redhat Linux 8.0 or newer,
FSL4.0 or newer,
and AFNI_2006_06_30 or newer)
ppge4
epidewarp4.ucsd
dicomrx
ggfm
epidewarp4.ucsd
dicomrx
Download InstructionsCFMRI Field Map User's Guide
More Info on Geometric Distortion Correction Link

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