Quantitative magnetic resonance imaging.

The state of the art of quantitative imaging in magnetic resonance will be illustrated, focusing in particular on the points of intersection between physical science and clinical radiology, both in the research world and in hospital practice. The work of the Associazione Italiana di Fisica Medica (AIFM) Working Group on MR Intercomparison will also be described. This group carries out inter-scanner comparisons with respect to various physical parameters that can be estimated in vivo using magnetic resonance tomographs.