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syngo.via - CT Body Perfusion

syngo.via - CT Body Perfusion Step by Step

syngo.via® CT Body Perfusion syngo.via CT Body Perfusion is designed to aid in the diagnostic evaluation of the perfusion of or- gans and tumors. The software can calculate blood flow, blood volume, mean transit time, and permeability of contrasted dynamic CT volume data sets. 1. From the Patient Worklist, load an appropriate data set into the CT Body Perfusion Work- flow: • If the examination has been correctly mapped, double click to load • If manual mapping is required, right-click the examination and select Open With > CT Body Perfusion 2. Body Perfusion results are auto-processed and can be viewed on the Perfusion Evaluation step. Information AF X 0.00S Results are already available and can be 1: Motion Correction i viewed in the Perfusion Evaluation Task. 2: Segmentation 3: Vessel Definition 4: Liver Definition OK 4: Results Preview 5: Results Perfusion Evaluation MM Reading 3. In the Perfusion Evaluation step, Circular or Freehand ROIs can be drawn to obtain addi- tional quantitative information about the body perfusion data set. Results are populated to the Statistics tab, which can be exported with a right mouse click. Perfusion Evaluation Statistics IT ROI/VOI MIP BFD BVD MTTD FED Circular Freehand VOI TAC Marker [2] ROI 96.41 47.71 6.21 7.56 34.73 Area/cm2 or Volicm3 Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Job Aid | syngo.via CT Body perfusion Effective Date: 05/01/2017 | HOOD05162002591115 4. Should a manual evaluation be desired or necessary, return to the CT Body Perfusion work- flow step and select a template. Clinical administrators can create new custom templates using the Configuration under the gear icon. Evaluate the quality of the CT examination by navigating through the time points of the data set using the Time Slider. CT Body Perfusion 2.43s Select to Start 15 Select to Start TAC Reset Liver Tumor 1: Motion Correction 2: Segmentation 3: Vessel Definition 4: Liver Definition 4: Results Preview 5: Results Motion Correction and Time Point Exclusion: During preprocessing, syngo.via performs a mo- tion correction of the dynamic data set. Use the Motion Correction step to improve images that still show motion. • To perform an automated body motion correction, click the Align icon. To define a new motion correction base: Align • o Navigate on the Time Slider to the desired time point. Align o Triangle will jump to the selected time point. Base • To exclude time points from evaluation: o Navigate on the Time Slider to the desired time point. o In the Case Navigator, click the Exclude icon to exclude the currently displayed time point, or click the Range Exclude icon to exclude all time points from the cur- rently displayed to the last available time point. Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Page 2 of 6 Job Aid | syngo.via CT Body perfusion Effective Date: 05/01/2017 | HOOD05162002591115 Segmentation and 4D Noise Reduction: Use the Segmentation step to reduce image noise and to check and define the volume and structures for evaluation. • If the images are very noisy because of low kV or low dose, enable the Reduce Noise icon to perform a 4D Noise Reduction. Reduce Noise • You can define a volume of interest (VOI) to evaluate a specific organ or volume only enable the Segment Organ icon. Segment Organ – • Click and drag the mouse pointer to define a contour, and double click to end the drawing. Draw • Scroll through the slices and create additional contours on other images. Images in between are interpolated automatically. • Click the Accept icon to finish drawing. Contours can then be edited if necessary with the tools on the mini toolbar. Accept • You can exclude structures, such as bone or air, by adjusting the values of the HU-based segmentation. min -50 HU • Enable the HU Segmentation icon. Segment max 150 HU • Enter desired values in the min or max HU fields and press Return. Vessel Definition: Click the Vessel Definition step when the segmentation results are satisfac- tory. • Check that the reference artery (red circle) and the vessels (purple overlay) are appropri- ately identified. These can be adjusted if the automatic identification is not as expected. • To define an artery manually:  Enable the Artery Definition icon. Artery  Click and drag an ROI in the desired artery. Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Page 3 of 6 Job Aid | syngo.via CT Body perfusion Effective Date: 05/01/2017 | HOOD05162002591115  Disable the Artery Definition icon to complete. • To adjust the threshold of the purple overlay: • Enable the Window icon. Use the middle mouse to window vessels in and out. Window • • Disable the Window icon to complete. Liver Definition (if using the Liver template): For liver evaluation, define the spleen and portal vein perfusion using ROIs in the Liver Definition step. • To define the arterial perfusion: • Scroll through the tMIP to an image that shows the spleen. Spleen • Click and drag the mouse to draw a freehand ROI that covers the spleen. • Check the Spleen curve in the TAC tool and click the Spleen Definition icon to finish editing. • To define the venous perfusion: • Scroll through the tMIP to a slice displaying the portal vein. Portal • Click and drag the mouse to draw an ROI that covers the vessel. Vein • Check the Portal Vein curve in the TAC tool and click the Portal Vein Definition icon to finish editing. Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Page 4 of 6 Job Aid | syngo.via CT Body perfusion Effective Date: 05/01/2017 | HOOD05162002591115 Results Preview: Click the Results Preview step once the vessels are properly defined. • Check the displayed result images. 5: Results Preview Check result images. Click Confirm to save and start the evaluation. Unsaved results • Click Confirm to start the evaluation and to will be deleted. proceed to the Results step. Confirm Results: In the Results step, Circular or Freehand ROIs can be drawn to obtain additional quanti- tative information about the body perfusion data set. Results are populated to the Statistics tab, which can be exported with a right mouse click. 6: Results O IT Circular Freehand VOI Marker Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Page 5 of 6 Job Aid | syngo.via CT Body perfusion Effective Date: 05/01/2017 | HOOD05162002591115 Please note that the learning material is for training purposes only! For the proper use of the software or hardware, please always use the Operator Manual or Instructions for Use (hereinafter collectively “Operator Manual”) issued by Siemens Healthineers. This material is to be used as training material only and shall by no means substitute the Operator Manual. Any material used in this training will not be updated on a regular basis and does not necessarily reflect the latest version of the software and hardware available at the time of the training. The Operator's Manual shall be used as your main reference, in particular for relevant safety information like warnings and cautions. Note: Some functions shown in this material are optional and might not be part of your system. Certain products, product related claims or functionalities (hereinafter collectively “Functionality”) may not (yet) be commercially available in your country. Due to regulatory requirements, the future availability of said Functionalities in any specific country is not guaranteed. Please contact your local Siemens Healthineers sales representative for the most current information. The reproduction, transmission or distribution of this training or its contents is not permitted without express written authority. Offenders will be liable for damages. All names and data of patients, parameters and configuration dependent designations are fictional and examples only. All rights, including rights created by patent grant or registration of a utility model or design, are reserved. Copyright © Siemens Healthcare GmbH 2020 Siemens Healthineers Headquarters Siemens Healthcare GmbH Henkestr. 127 91052 Erlangen, Germany Phone: +49 9131 84-0 siemens-healthineers.com Unrestricted 0 Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2020 SIEMENS Master Template Effective Date: 3/5/2020 | HOOD05162003074494 Job Aid Effective Date: 05/01/2017 | HOOD05162002591115 Healthineers Page 6 of 6