2011年12月30日 · For example, being 50 or older increases the probability that the nodule is cancerous. A history of smoking increases lung cancer risk. Asbestos exposure and a family history of lung cancer also are risk factors. Your doctor may compare your current X-ray or CT scan with a previous one to see if the nodule was present.

2017年11月10日 · If ovarian cancer is suspected based on symptoms or exam, women often will undergo a CT scan of the abdomen and pelvis, or an ultrasound of the pelvis. On a CT scan, a health care provider may see an ovarian mass, tumors within the abdomen or extra fluid within the abdomen — all of which would increase the suspicion of ovarian cancer.

2017年7月15日 · A heart scan can reveal if you have any calcium in your heart’s arteries. The test itself doesn’t take long — usually about 10 to 15 minutes. The entire appointment may take up to an hour. The risks associated with a heart scan are minimal. A heart scan exposes you to radiation, but the amount is considered safe.

2019年12月30日 · "That CT scan caught the top of my kidneys, and on my left kidney, they discovered a spot," Carol says. An unexpected problem. Melissa Nissen, M.D., a urologist at Mayo Clinic Health System in Eau Claire, Wisconsin, says characteristics revealed on the CT scan made it more likely that the spot on Carol's kidney was a solid mass — causing ...

2015年10月5日 · Dr. McCollough wrote “Answers to Common Questions About the Use and Safety of CT Scans,” which was published Oct. 1 in Mayo Clinic Proceedings as a Q&A in an effort to provide credible, balanced information about how much radiation a CT scan delivers and what levels are considered safe. So, are CT scans safe? Yes, says Dr. McCollough.

2024年5月3日 · The coronary calcium scan starts with a CT scan of your chest that measures calcification in the arteries that feed your heart. It's typically a one-time test that combines a series of X-ray images of your body. If calcification is found, we usually don't repeat the test.

2018年5月15日 · ROCHESTER Minn. – A team of researchers including investigators from Mayo Clinic has identified a technology to address the problem of false positives in CT-based lung cancer screening. The team’s findings are published in the current issue of PLOS One. “As physicians, one of the most challenging problems in screening patients for lung cancer is […]

2021年6月28日 · ROCHESTER, Minn. — Performing the first cardiac scan on their new photon-counting-detector CT scanner was a once-in-a-career moment for Joel (J.G.) Fletcher, M.D., and Cynthia McCollough, Ph.D. The medical and scientific directors, respectively, of the CT Clinical Innovation Center describe the arrival of this latest research CT system as a major milestone in CT imaging, […]

2022年1月19日 · World Cancer Day is February 4 ROCHESTER, Minn.— World Cancer Day is February 4 and that makes this the ideal time to talk about lung cancer and smoking. Internationally, lung cancer is the most common cause of cancer deaths and the World Health Organization estimates that 90% of cases could be prevented by eliminating tobacco […]

2022年9月30日 · "This new scanner is literally an order of magnitude more powerful than our prior best PET/CT scanners, allowing for dramatic improvements in clinical practice while also opening whole new horizons," says Geoffrey Johnson, M.D., Ph.D., chair of the Division of Nuclear Medicine in the Department of Radiology at Mayo Clinic. ###