  Recent results of resonance production from RHIC at $\sqrt{s_{\rm NN}} = $
200 GeV and SPS at $\sqrt{s_{\rm NN}} = $ 17 GeV are presented and discussed in
terms of the evolution and freeze-out conditions of a hot and dense fireball
medium. Yields and spectra are compared with thermal model predictions at
chemical freeze-out. Deviations in the low transverse momentum region of the
resonance spectrum of the hadronic decay channel, suggest a strongly
interaction hadronic phase between chemical and kinetic freeze-out. Microscopic
models including resonance rescattering and regeneration are able to describe
the trend of the data. The magnitude of the regeneration cross sections for
different inverse decay channels are discussed. Model calculations which
include elastic hadronic interactions between chemical freeze-out and thermal
freeze-out based on the K(892)/K and $\Lambda$(1520)/$\Lambda$ ratios suggest a
time between two freeze-outs surfaces of $\Delta \tau>$ 4 fm/c. The difference
in momentum distributions and yields for the $\phi$(1020) resonance
reconstructed from the leptonic and hadronic decay channels at SPS energy are
discussed taking into account the impact of a hadronic phase and possible
medium modifications.
