The Mayo Clinic in Rochester, Minn., is the first medical facility in the United States to install the Somatom Definition Flash dual-source CT scanner from Siemens Healthcare.
The Somatom Definition Flash requires only a fraction of the radiation dose that systems previously required to scan even small anatomical details, the company said. For example, a spiral heart scan can be performed with less than 1 millisievert (mSv), whereas the average effective dose required for this purpose usually ranges from 8 mSv to 20 mSv.
The X-Care application selectively reduces the radiation exposure to dose-sensitive anatomical regions, such as the female breast, by as much as 40 percent. Furthermore, an adaptive dose shield blocks irrelevant pre-spiral and post-spiral radiation, thus ensuring that only a minimum and clinically essential radiation exposure occurs. This enables an additional 25 percent reduction of the dose required for routine exams, according to Siemens.