I don't know how many CT scans I've had total. I've had 3 so far this year (2 during an exacerbation, 1 for my transplant evaluation) and 4 a couple years ago to track the progression of an invasive wangiella infection. Before that I had a couple during exacerbations and as a kid to monitor my sinus polyps. Only once did I have contrast, when I had a particularly bad pneumonia and they wanted to map it out. Add in a couple of barium swallows, dexa scans, and about a million chest x-rays and I probably glow too.