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syngo.via VA30 – Monoenergetic

syngo.via VA30 – Monoenergetic

syngo.via® CT Dual Energy Monoenergetic The syngo.via Dual Energy Monoenergetic application class simulates images scanned with a single photon energy beam, depending on the energy (keV) value. By changing the energy value (keV), the contrast between different materials can be enhanced. This may sometimes be helpful in improving the image quality of anatomy in the presence of metal. 1. From the Patient Worklist, load an appropriate data set into the Dual Energy Workflow:  If the examination has been correctly mapped, double click to load  If manual mapping is required, right-click the examination and select (Re-) Assign Workflow Template > CT Dual Energy 2. On the Dual Energy Workflow Step, click the drop-down arrow adjacent to the Optimum Contrast icon to expose both the Optimum Contrast and Monoenergetic icons. Click on the Monoenergetic icon. CT Dual Energy Extremity > Show Application Profile 3. From the upper right segment tools in any segment, click the drop-down arrow adjacent to the Dual Energy ROI Circle and select the ROI Monoenergetic option. A Distance Line DE_Nail_Monoenergetic 008 Dual Energy ROI Circle CURRENT.MONOENERGETIC. WORKIN Dual Energy ROI Circle # 13726874 9/21/2010 Dual Energy ROI Freehand 3:01:38.19 PM 21 FRM 1 DE Normalize Contrast SP H1041.2 ROI Monoenergetic -RF Angle Monoenergetic ROI 5cm MPF DE ME 1500 450 Dual Energy Monoenergetic E = 70 kev SIEMENS www.usa.siemens.com/healthcare 638 Effective date 9/8/2016 Page 1 of 2 4. Using the left mouse button, draw an ROI on the metal in that segment. syngo.via will graphically display the CT value (HU) and the contrast to noise ratio (CNR) curves for the tissue of interest. The white dotted vertical lines indicate the energy range of optimal metal artifact reduction (110 – 150 keV). Move the magenta line into this area using the mouse or the Monoenergetic slide bar at the bottom of the DE image until the desired image quality is obtained. DE_Nail_Monoenergetic CT Value [HU] PI CNR [A.U.] MG 008 Ref.: CT_VIA CASES SOMATOM Definition Flash OOG - 0.9: CURRENT.MONOENERGETIC. WORKINGSET CT 2010A 500 - # 13726874 - 0.8 9/21/2010 Mon> Run 3:01:38.19 PM Sn140/78 [kev] App: 30/ Sn140 leah: 2544.8/ 544.8/ 1550.3/ 1881.5 HU 21 FRM 1 - 0.7: 14/0.406/ 0.852 C/N: 0.914/0.40 SP H1041.2 500 - - 0.6: -RF - 0.5: - 0.4: 500 - - 0.3 0 - - 0.2: 500 - - 0.1 MPR DE ME Monoenergetic 1500 Energy [kev 450 0 40 78 190 60 BO 100 120 140 160 180 A 1DE Monoenergetic nail T Value [HUI CNR [A.U.] 008 SOMATOM Definition Flash ,3000 - - 0.9 .. > CURRENT.MONOENERGETIC.WORKINGSET 2500 - - 0.8 9/21/2010 3:01:38.19 PM 2000 - - 0.7 23 FRM 1 SP H1107.2 1500 - 0.6 -R- 1000 0.5 - 0.4 500 - 5cm - 0.3 0 - - 0.2 F -500 - MPR - 0.1 1500 DE ME 450 11000 Energy keV] Dual Energy Monoenergetic E = 158 keV CO- 40 80 100 120 140 180 18 18 5. This resulting Monoenergetic dataset may be saved as a new axial, coronal, or sagittal series using the Parallel Ranges tool in the upper left segment. SIEMENS www.usa.siemens.com/healthcare Page 2 of 2

  • syngo.via VA30 – Monoenergetic