November 28, 2011 – At the 97th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA), from November 27 to December 2 in Chicago, Siemens Healthcare is unveiling the Somatom Definition Edge – the first single-source computed tomography (CT) to use Siemens’ recently developed Stellar Detector. In routine examinations, structures up to 0.3 mm are visible, and image sharpness may potentially be improved. Boasting a rotation speed of 0.28 seconds, the Somatom Definition Edge is Siemens’ fastest single-source CT scanner, acquiring up to 23 centimeters per second – which may enable a physician to perform a customary thorax-abdomen examination in approximately two seconds and potentially eliminate the need for patient breath-holding during a scan. Siemens also has developed a new Dual Energy mode for the Somatom Definition Edge. In Dual Energy images, two different tube voltages are generated to help enable recognition of different tissue types.