- All patients must have their disease status documented by a complete physical examination and imaging studies within 4 weeks prior to the first dose of study drug. Imaging studies must include computerized tomography (CT) scan of neck, chest, abdomen, pelvis, and all known sites of resected disease in the setting of Stage IIIb/c or Stage IV disease, and brain magnetic resonance imaging ([MRI], brain CT allowable if MRI is contraindicated).