preprocessing for oblique acquisition of functional images

Hello,

I would like to ask a very basic question regarding the preprocessing procedure of functional images acguired in oblique axial direction (100%). The check normalization pictures look pretty good.

I am obtaining slightly different results if those images are normalised to EPI or T1, espcially some lack of activation in the very rostral frontal areas?

Do you think that an extra step should be used during the preprocessing of oblique images using dpabi? Reorientation?

Any advice on this issue would be greatly appreciated.

Thanks,

Ekaterina