1:51gma3February 21, 2024Annual mammograms have greatest benefit, study saysABC News Chief Medical Correspondent Dr. Jen Ashton talks about breast cancer screenings, such as mammograms, ultrasounds and MRIs.Up Next in newsWhat you need to know about mammogramsOctober 5, 2023The 2024 total eclipse seen across North AmericaApril 8, 2024Sandra Day O'Connor, 1st woman on Supreme Court, dies at 93December 1, 2023