dcm2niix
dcm2niix is designed to convert neuroimaging data from the DICOM format (standard image format generated by modern medical imaging devices) to the NIfTI format ([Li_2016]).
Official resources
References
[Li_2016]
Li X, Morgan PS, Ashburner J, Smith J, Rorden C. The first step for neuroimaging data analysis: DICOM to NIfTI conversion. J Neurosci Methods., 2016, 264:47-56.