May 13 (Reuters) - Infratil Ltd IFT.NZ :
* PACIFIC RADIOLOGY GROUP ACQUISITION UNCONDITIONAL-IFT.NZ
* COMPLETION OF ACQUISITION IS EXPECTED TO OCCUR ON 31 MAY
* NOW EXPECTS ITS OWNERSHIP STAKE IN PACIFIC RADIOLOGY BETWEEN 53.5% & 58.5%, FOR TOTAL CONSIDERATION OF NZ$312 MILLION TO NZ$344 MILLION