The purpose of the present analysis was to assess whether adding a 1 mm margin to the gross tumour volume (GTV) improves the control rate of brain metastasis treated with radiosurgery (RS).
Department of Radiation Oncology, Groupe Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, 47-83, Bd de l'Hôpital, 75651 Cedex 13, Paris, France.