Hello AFNI experts
I am doing a bit of pre-processing on functional fMRI images using Nipype-AFNI and I always get a warning saying " oblique dataset is ... degrees away from the plumb, consider using 3DWarp", but when I do use the 3dWarp command on my functional scans, the dimensions of the resulting fMRI image is different from the original. For instance my original data has the dimensions - 64*64*33*150 but after 3dWarp I get 64*73*56*150. Is this normal? ( I am relatively new to the world of fMRI, please do feel free to correct me, if my basic concepts are wrong.)
Thank You.