Hi Guys. Been following the site for some time but frist time participated. I have bronchiestasis in both lungs (but probably on moderate side) and two small nodules in one lung one nodule of which is growing. I have had no less than six CT scans in three years, plus full body CT Pet scan and a heart profusion test - all involving radiation albeit low doses. The only thing it seems in my favour as regards radiation is that I am 75. Has anyone any helpful informed comments as to why I should not be concerned. Or a suggestion how I can find out (I am even willing to pay). Best wishes to everyone. In Oz (where I spent 18 years) you would be called real Aussie battlers. It's a fine compliment.