fix passing parameters on _mat2itk
fix passing parameters on _mat2itk

poldracklab/preprocessing-workflow,oesteban/fmriprep,poldracklab/fmriprep,oesteban/preprocessing-workflow,oesteban/fmriprep,oesteban/preprocessing-workflow,poldracklab/preprocessing-workflow,oesteban/fmriprep,poldracklab/fmriprep,poldracklab/fmriprep