non-small cell lung cancer patients with less than brain metastases
Patients must have received at least the first-line anti-tumor treatment, and the front-line treatment must include chemotherapy or targeted treatment with a platinum containing combination scheme, but not anti-PD-1 / L1 treatment
Patients who have not received intracranial local treatment before
You may not be if
Patients who toke major surgery within 4 weeks prior to enrollment or had ununited wounds
Patients with hemorrhage in intracranial metastasis
