3D labelled atlas rather than 4D probablistic?

[rtybanana]

Hi,

As I understand it, the DiFuMo atlas is currently accessible as a 4D probalistic atlas with each region on a different volume and voxel values corresponding to the probability that it belongs to the ROI marked by each volume. For my purposes, I need the atlas to be in a 3D format where voxels are labelled with a number corresponding to the region ID; however, I've done some research but can't find any documented way of converting between the two.

Is there a way that you know of to convert from a 4D probablistic to a 3D labelled atlas, perhaps using FSL?

Many thanks, Rory