Hi there. 

I am transforming dicom to nifti. I get following output: 

data_type INT16

dim1 256

dim2 256

dim3 186

dim4 1

datatype 4

pixdim1 1.000000

pixdim2 1.000000

pixdim3 1.000000

pixdim4 0.008136

cal_max 0.000000

cal_min 0.000000

file_type NIFTI-1+; 

but I need this dimensionality:

data_type INT16

dim1 64

dim2 64

dim3 30

dim4 196

datatype 4

pixdim1 3.437500

pixdim2 3.437500

pixdim3 5.000000

pixdim4 2.000000

cal_max 9897.000000

cal_min 0.000000

file_type NIFTI-1+

Can someone help me please? Thanks

Your question is underspecified. What tool reports the wrong dimensionality? What were the dimensions of the input DICOM? Are you running the current version of dcm2niix (v1.0.20230411) and if not does upgrading resolve your issue. Maybe you can provide the complete output of running `fslhd mynifti.nii` which would provide additional details.