Twenty-five cases with liver metastases cancer were treated by the application of technique of body-γ-knife radiotherapy. Planning of treatment was made and the prescribed dose was adjusted depending on the site of the tumor, clinical target volume (CTV), Kanofsky Performance and aim of treatment. The optimized index: 100% gross tumor volume (GTV) received a minimum of perimeter isodose curve 50%-80% of the prescribed dose for 3.2-4.4 Gy per-fraction from eight to fifteen times. Treatment dose: perimeter do...