Radiological Society of North America
RSNA 2008

SOMATOM® Definition Flash
With the SOMATOM Definition Flash, Siemens Healthcare is introducing a CT scanner that will set new standards regarding speed and dose reduction. The system requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before.
  SOMATOM® Definition Flash 1[1.43 MB] 

The SOMATOM Definition Flash is a new dual-source CT from Siemens, 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 just 0.6 seconds.
  SOMATOM® Definition Flash 2[1.28 MB] 
  SOMATOM® Definition Flash 3[1.31 MB] 

With the SOMATOM Definitions Flash, patients are no longer required to hold their breath during the exam the way they had in the past. At the same time, the system 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.
  SOMATOM® Definition Flash 4[1.79 MB] 

SOMATOM® Definition AS 20
The SOMATOM Definition AS 20 is the latest addition the Siemens Definition family of CT scanners. The Definition AS 20 is a 20-slice configuration scanner; the technology couples multiple components in a dynamic manner: a large-volume coverage area with a 200-cm scan range, 78-cm gantry bore and the ability to add a high-capacity 650-lb patient table.
  SOMATOM® Definition AS 20[184 KB]