stimuvax trial for nsclc

I am hoping that someone out there is on the Stimuvax Phase III trial for NSCLC. If so, are you having cat or pet scans, or just x-rays? My husband has been in the trial since Jan. 2008. He gets a lung x-ray every 12 weeks, but nothing else. Has not had a pet scan since July 2007 and a ct scan since Jan. 2008.He is having pain in his hips now and his arthritis doc has ordered an MRI to check for metasis.It was my understanding when my husband startedstimuvax trial that ct scans would be part of the protocol, but everytime I ask the oncologist about it, he says he is in no hurry. So if anyone is participating in this trial, please let me know what protocol your oncologist is following.