I think this question of what to look for in the CT scans is a vexing question for a lot of us. The way I understand it is that bronchiectasis involves permanent changes -- thickening, scarring, etc -- in the airways. My respiratory therapist told me the goal is to prevent further damage. So we hope that those signs show "no changes." But the CT may show "plugs" in the airways and/or inflammation which may come and go. These kinds of signs on a CT may (or may not) be treatable and temporary.