P.12.17: Intermodality Agreement Between Contrast-Enhanced Ultrasonography and Contrast-Enhanced Computed Tomography for the Follow-Up of Liver Metastases After Stereotactic Body Radiation Therapy. (15th March 2017) - Gabbani, T.; Marsico, M.; Lunardi, S.; Marocchi, M.; Annese, V.; Biagini, M.R.