I have tried to map the functional volume onto MRI surface

 

functional image has been coregistered with MRI (voxel size is resample to same size)

 

Here is the command

 

mri_vol2surf  --reg forig.mgz --trgsubject 003_S_1257 --hemi lh --surf inflated --surfreg lh.sphere.reg --out lh.fsurf.mgh --srcreg forig.mgz.reg

 

forig.mgz is functional image

003_S_1257 is MRI

orig.mgz.reg=[003_S_1257
1.000000
1.000000
1.000000
1.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00
0.000000e+00 1.000000e+00 0.000000e+00 0.000000e+00
0.000000e+00 0.000000e+00 1.000000e+00 0.000000e+00
0 0 0 1
round]

 

After surface generated, we found that generated surface is smaller compared with original MRI.

 

Did I make any mistake?

 

thanks

Lan