45 f. ive had a total of 7 radiology tests within the past year (ct and x-ray)for various health issues. concerned about radiation exposure and cancer now? suppose to get mammogram and another ct this year, scared to have them done. should i cancel?

Not knowing all your history & clinical findings, I don't think we could advise you to skip those tests. There are no guidelines of how many CT scans one should have in their lifetime. I do know that it is more of a concern for children who are at risk for other cancers later in life. I'm confident that your physicians feel the benefits of the testing recommended outweigh any risks.