Radium-223 for Advanced Prostate Cancer with Bone Metastases

Inclusion Criteria: * Patient must be \>= 18 years of age * Patient must have histopathologic diagnosis of prostate cancer * Patient must have castration-resistant prostate cancer * Patient must have radiographic evidence of bone metastasis * Patients must be symptomatic from prostate cancer * Patient must have plans to undergo treatment with radium-223 * Patient must have a PSA level \>= 10 ng/mL * Patient must have castrate testosterone levels demonstrated within the last 3 months prior to screening * Patient must have anticipated survival \> 3 months * Patient must be willing and able to authorize consent * Patient must be willing and able to comply with the protocol, including follow-up visits Exclusion Criteria: * Patient must not have visceral metastasis * Patients on regimens of radium-223 in combination with other antineoplastic agents are excluded \* Bone-targeted only therapy (e.g. denosumab or zoledronic acid) will be allowed * Patients who have received prior radium-223 * Patients who have received prior platinum containing chemotherapy * Absolute neutrophil count (ANC) \< 1.5 x 10\^9/L * Hemoglobin (HB) \< 9 g/dL * Platelets (PLT) \< 100 x 10\^9/L * Any condition which, in the investigator's opinion, makes the subject unsuitable for trial participation