With Dual Energy scanning, the SOMATOM Definition and SOMATOM Definition Flash open the door to a new world of characterization, visualizing the chemical composition of material. The idea of Dual Energy is not new to the CT community. Earlier approaches, including two subsequent scans at different tube voltages or two
subsequent scans at the same position, failed to seamlessly align the
imaged anatomy and to capture the same phase of contrast enhancement.
Dual Energy was introduced into clinical practice with
Dual Source CT.
SOMATOM Definition Flash with Spiral Dual Energy: Two X-ray sources running simultaneously at different energies acquire two data sets showing different attenuation levels. Result: Easy classification of the chemical composition of the scanned tissue.
SOMATOM Definition Flash uses the new Selective Photon Shield to filter out unnecessary photons of the high energy X-ray tube. Result: A much better separation of the 80/140 kV images, increasing bone-iodine differentiation by up to 80 %**.
*In clinical practice, the use of IRIS (Iterative Reconstruction in Image Space) or SAFIRE (Sinogram-Affirmed Iterative Reconstruction) may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task.
**Results may vary. Data on file.