Patients who undergo head and neck CTs have higher risk of developing cataracts than those never exposed to the procedure.
Repeated exposure to head and neck CTs significantly increases the risk of cataract development, according to a study published in the American Journal of Roentgenology.
Researchers from Taiwan undertook a retrospective study to evaluate the possible effect of head and neck CTs on medical radiation-induced cataracts. Using a random sample from 2 million people enrolled in the Taiwan National Health Insurance Research Database, the researchers analyzed 2,776 subjects with head and neck tumors who underwent at least one CT scan between 2000 and 2009.
They were all aged between 10 and 50 years old. A control group of 27,761 subjects who were not exposed to radiation was matched by time of enrollment, age, sex, history of coronary artery disease, hypertension, and diabetes. The average follow up was 10 years.
The results showed that the subjects who had undergone CTs had a higher overall incidence of cataracts compared with the nonexposed group (0.97 percent versus 0.72 percent). As the number of CTs increased, so did the cataract frequency:
· One or two scans: 0.79 percent;
· Three or four scans: 0.93 percent;
· Five scans: 1.45 percent.
“Radiation exposure due to repeated head and neck CT studies was independently associated with an increased risk of developing cataracts when the cumulative CT exposure frequency involved more than four studies,” the authors wrote.
GE HealthCare Debuts AI-Powered Cardiac CT Device at ACC Conference
April 1st 2025Featuring enhanced low-dose image quality with motion-free images, the Revolution Vibe CT system reportedly facilitates improved diagnostic clarity for patients with conditions ranging from in-stent restenosis to atrial fibrillation.
The Reading Room: Racial and Ethnic Minorities, Cancer Screenings, and COVID-19
November 3rd 2020In this podcast episode, Dr. Shalom Kalnicki, from Montefiore and Albert Einstein College of Medicine, discusses the disparities minority patients face with cancer screenings and what can be done to increase access during the pandemic.
Can Photon-Counting CT be an Alternative to MRI for Assessing Liver Fat Fraction?
March 21st 2025Photon-counting CT fat fraction evaluation offered a maximum sensitivity of 81 percent for detecting steatosis and had a 91 percent ICC agreement with MRI proton density fat fraction assessment, according to new prospective research.