Calibration control of PET cameras participating at the multi centers study F.N.C.L.C.C.-F.L.T. (P.H.R.C.01/0505)

The principal objective of the P.H.R.C. F.L.T. 01/0505 is to evaluate the response to the neo-adjuvant therapy of breast cancers by PET with 18F-fluoro thymidine (F.L.T.) imaging. The PET cameras of the participating centers were from different models, so the study includes an inter-sites protocol of calibration control whom we give here the first results. The conclusions are that no important deviation appeared on the PET cameras calibrations. these first very encouraging results confirm that the multi centers protocols allow to get data as reliable as if they were got on a single PET system. (N.C.)