Centre Léon Bérard, 28 rue Laennec 69373, LYON Cedex 08, France; CREATIS, CNRS UMR5220, Inserm U1044, INSA-Lyon, Université Lyon 1, Villeurbanne, France. Electronic address: marie-claude.biston@lyon.unicancer.fr.Physica medica : PM : an international journal devoted to the applications of ...