Blood samples will be obtained one week after the first treatment with microspheres. If the patient has bi-lobar disease and the results of lab tests meet protocol specified criteria, the dose will be repeated in the initially-untreated lobe. If the lab tests do not meet protocol specified criteria (i.e. study inclusion/exclusion criteria), the treatment will be deferred for fourteen days and labs repeated. If they are then within parameters, the patient will receive the second dose. If they are not within parameters, the patient will proceed to chemotherapy.