Hi jeffrey,Got my results of my ct scan i had two days ago and nothing has changed. The ct scan shows if the tumors have grown; and they have not, so i guess the tarceva is working. I was told the reason for the ct scan and not a pet scan is because the ct scan shows the size of the tumors clearer. I always thought the pet scan was a sharper immage. I guess it all depends on what the professionals are looking for. However, i am off the tarceva for now and will be seeing a dr. Tomorrow to discuss radiation treatments, as i'm having some problems. For the past two weeks my face has been swollen, i have developed a cough, i am more shortwinded than usual and swallowing at times is difficult.i thought these were signs of an allergic reaction to the tarceva but my dr. Says it's pressure on some of the veins and arteries near the top of my lung caused by the tumor. The radiation supposedly will shrink the tumor quicker than the chemo drugs, thus it will alleviate the uncomfortable symptoms i'm experiencing. I hope this works. I have to admit i'm a bit aprehensive about radiation treatments.