Arterial Spin Labeling Blood Flow Magnetic Resonance Imaging for the Evaluation of Response to Therapy in Metastatic Renal Cell Carcinoma

All participants must be enrolled on protocol, "Collection of Specimens and Clinical Data from Patients with Renal Cell Carcinoma Treatment with Targeted Therapies", about to start a treatment course with sunitinib and AMG386, and willing to come in for successive MRIs at the following times: baseline, 2 weeks upon initiation of therapy with sunitinib and AMG386, after cycle 2 and/or cycle 4 of therapy, and at the end of your study therapy.