Sort DCM files with multiple variables in the name

Does anybody know an easy way to sort DCM files with two variables in the name, for example:

ADNI_002_S_0295_MR_MPRAGE_br_raw_20110602125226441_80_S110476_I238627.dcm ADNI_002_S_0295_MR_MPRAGE_br_raw_20110602125227472_51_S110476_I238627.dcm

As can be seen the first number is a recording data and a random number, the second is the slice-number. In order to sort these files, based on slice-number i need to extract the slice-number from the name and rename the files afterwards without the randomly generated number. Does anybody know an easy way to do this?