Whole Brain Radiation Using IMRT for Patients With Brain Metastases

"Whole brain radiation using IMRT: 60 Gy to gross disease (planning treatment volume \[PTV\] 60) or 45 Gy to gross disease (PTV 45) and 30 Gy to subclinical sites (PTV 30) over 15 fractions.~Patients will be treated Monday through Friday (5 days per week) for 3 weeks. Patients with either a single metastasis greater than 15 cubic centimeters (cm) or total volume of metastases greater than 26 cubic cm will receive the lower dose of 45 Gy to visible brain metastases. 45 Gy may also be prescribed per physician discretion.~Gross disease which has received prior radiosurgery will receive 30 Gy."