New Siemens CT Offers Faster Speed, Lower Dose
Siemens Healthcare's SOMATOM Definition Flash dual-source CT requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before, according to Siemens. The SOMATOM Definition Flash featuring two X-ray tubes that simultaneously revolve around the patient's body. The fastest scanning speed in CT (i.e., 43 cm/s) and a temporal resolution of 75 ms, enable for example complete scans of the entire chest region in 0.6 seconds. Thus, patients are no longer required to hold their breath during the exam the way they had in the past. At the same time, the SOMATOM Definition Flash operates at an extremely reduced radiation dose. 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 40 mSv.
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