FORCE project aims to measure actives forces of malignant tumor by FRM. Two main forces are considered as key indicators of therapeutic response and metastatic potential: interstitial force and traction force at the cell/tumor interface. Biomarkers of these forces will be developped using direct images of magnetic resonance force (FRM). Efficiency of these non-invasive biomarkers will be evaluated through their capacity to predict tumoral environment invasion, notably micro-vascular invasion, and therapeutical results in Hepatocellular Cancer (HCC).