18F-FLT-PET Imaging of the Brain in Patients With Metastatic Breast Cancer to the Brain Treated With Whole Brain Radiation Therapy With or Without Sorafenib: Comparison With MR Imaging of the Brain

"All patients will be imaged using FLT-PET scans at baseline (within 4 weeks of initiation of WBRT), 7-10 days after completion of WBRT and then 10-12 weeks after WBRT.~Patients will also be evaluated with MRI imaging at baseline and then 10-12 weeks after WBRT.~Patients will be followed with MRI every 3 months (+/- 7 days) for the first year and then every 6 months (+/- 7 days) thereafter which is the standard of care."

"All patients will be imaged using FLT-PET scans at baseline (within 4 weeks of initiation of WBRT), 7-10 days after completion of WBRT and then 10-12 weeks after WBRT.~Patients will also be evaluated with MRI imaging at baseline and then 10-12 weeks after WBRT.~Patients will be followed with MRI every 3 months (+/- 7 days) for the first year and then every 6 months (+/- 7 days) thereafter which is the standard of care."