| Exclusion Criteria: | 1) Patients who have received prior radiation therapy to the brain for any reason.
2) There is radiographic evidence of leptomeningeal disease prior to study entry.
3) The primary tumor is small-cell lung cancer, lymphoma, leukemia, or multiple myeloma.
4) For females, if they are pregnant or breast-feeding (The exclusion is made because gadolinium may be teratogenic in pregnancy). |