A magnetic resonance imaging (MRI) system is provided for imaging immune response of soft tissue to therapy by, prior to therapy, administering a contrast agent to the soft tissue； imaging a region of interest using delta relaxation enhanced magnetic resonance (DREMR) to define a functional section； selectively sampling local cells in the functional section； conducting immuno-assay analysis on the sampled local cells； and following therapy, further imaging said region of interest using DREMR to assess immune response of said cells to therapy.
