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ePaper created 2015-03-02, 10:26:30 | version 1.35.0
RADBOOK 2015 11 COMPUTED TOMOGRAPHY ◼ RADBOOK 2015 11 COMPUTED TOMOGRAPHY ◼ The benefits of the new procedure are illustrated by the diagnostics in a case of suspected pulmonary embolism: Due to the improved tissue differentiation and the precise representation of contrast media distribution, vascular occlusions can be quickly identified and their size determined. In addition to increasing the diagnostic strength of clinical images, TwinBeam technology also minimizes the X-ray dose required in a different way to other single source dual energy pro- cedures. All dose-reducing Siemens technologies can be used with the SOMATOM Definition Edge.This now also includes ADMIRE, the model-based iterative reconstruction procedure which was just recent released on the SOMATOM Force and whose scanner-specific algorithms can reduce X-ray doses further still – achieving excellent image resolution and extremely low image noise even at low doses. Iterative metal artifact reduction for clearer material differentiation To further improve not only the quality of dual energy examina- tions, but also of conventional CT scans, Siemens Healthcare is additionally introducing a new iterative algorithm for metal arti- fact reduction with the new SOMATOM Definition Edge: iMAR.This allows respective artifacts – caused by implants, artificial joints or pacemakers – to be reduced significantly. Such artifacts may lead in the worst case to non-diagnostic images by concealing the rele- vant pathologies. Even if a radiologist wishes to check whether bone fractures have healed and metal objects such as screws and plates can be removed, the iMAR algorithm can be used to clearly assess the ana- tomical details in the area of transition between bone and metal. With the aid of iMAR, streak artifacts can, for instance, be signifi- cantly reduced in clinical images, according to first scientific results. The products/features (here mentioned)are notcommerciallyavailable in all countries. Due to regulatory reasons their future availability can- not be guaranteed. Further details are available from the local Siemens organizations.www.siemens.com/healthcare With the new version of the SOMATOM Definition Edge, Siemens Healthcare has created the basis for establishing the dual energy procedure in clinical routine.The innovative X-ray tube concept in the new CT scanner enables simultaneous imaging at two different energy levels for the first time in single source computed tomography. RADBOOK 201511 RADBOOK 201511