Mass General Imaging has been at the forefront of research into
reducing radiation exposure from radiology exams since the mid
1990s. Read about the many ways we work to minimize radiation
dose for adult and child patients, especially from CT (computed
tomography) scans. Current radiation levels Current radiation
levels for common CT exams at Mass General, compared with
national benchmarks and annual background radiation. Radiation
measured in mSv (millisieverts). PROGRESS OVER TIME Reduction in
average CT radiation dose, last 24 months:25% - Head 28% - Chest
39% - Abdomen/pelvis 42% - CT enterography 55% - Kidney stone
(initial) 87% - Kidney stone (followup) 75% - Cardiac Department
of Radiology Chairman Emeritus James H. Thrall, MD, discusses
our decade-long commitment to reducing CT radiation to as low a
level as possible for each patient. Watch now > Mass General
Imaging has developed software tools that help referring
physicians choose exams that match the patient's needs—including
radiation-free alterna