- An assessment of the patient's tumor using the exams of your doctor's choice, either CT (Computerized Tomography) scan or MRI (Magnetic Resonance Imaging). In addition, the patients may also receive a bone scan or PET scan. Assessments of the patient's tumor will be performed after every 2 cycles for the first 6 cycles. From there, this testing will occur after every 3 cycles until tumor progression.