Today, CT Scans play a critical role in the diagnosis and management of most patients with complex thoracic and cardiopulmonary diseases. As the use of CT imaging increases, however, so does the risk for latent carcinogenic effects of ionizing radiation on radiosensitive tissue including the female breast. The recently redesigned Attenurad Breast Shield System consists of a thin (1 mm) piece of bismuth impregnated synthetic rubber covering that mounts firmly on an offset quarter inch foam base. The breast shield system offers up to a 57% reduction of radiation exposure during a CT scan without significant changes in image quality, including artifacts and beam hardening effects. Additional foam offsets are available.