I was diagnosed with non-small cell lung cancer earlier this year. I had my surgery on April 8, 2009. At that time I was told there was no metastases, however, I was advised to undergo a round of chemo. I opted, instead, for a clinical study of Tarceva. Two days ago I had a CAT Scan and x-ray prior to starting therapy on June 29, 2009. Would the CAT scan show metastases?