Diagnostic reference levels and achievable doses for common computed tomography examinations: Results from the Japanese nationwide dose survey

Abstract

The widespread implementation of iterative reconstruction algorithms and low-tube voltage in CT scanners is likely to facilitate further reduction in the CT radiation dose used in Japan. Although radiological technologists may require further education on appropriate CTDI_vol and DLP usage, the DRLs 2015 greatly contributed to the reduction of the CT radiation dose used in Japan.