dMR During First Line Treatment of Non Squamous Lung Cancer: Time Course and Prognostic and Predictive Impact.

A Non Interventional, open-label, single arm, single institution pilot study. Eligible patients will be monitored by diffusion-weighted magnetic resonance tomography (dMRT) during treatment with bevacizumab + chemotherapy for up to four cycles followed by bevacizumab maintenance therapy until disease progression.