Actually we are developing a performance measurement system based on DEA for non-centralized organization (31 states) in National Iranian Gas Company Interanet.
I recommend reading the following article in this connection:
- Lore Timmermans (2014) Impact of the digitalisation of mammography on performance parameters and breast dose in the Flemish Breast Cancer Screening Programme, Eur Radiol 24:1808–1819, DOI 10.1007/s00330-014-3169-y