How to Apply an Image Filter

How to Apply an Image Filter Computed Tomography Image filtering is a tool for manipulating the pixel data of a CT image and thus changes the image appearance. It is typically used to correct suboptimal image quality resulting from the use of an inappropriate kernel or to create a new image impression when the acquisition raw data is no longer available for further reconstruction. The types of image filters available are: LCE – Low Contrast Enhancement: Smoothing filter  4 grades: small, medium, strong, very strong  Less noise, better low-contrast resolution and tissue differentiation. Used mainly for soft tissue imaging. Similar results to smooth kernel utilization HCE – High Contrast Enhancement: Sharpening  Better high-contrast resolution. Sharper but grainier image. Used for detailed structures, mainly bones and lunch with appropriate window settings. Similar re- sults to sharp kernel utilization. ASA – Advanced Smoothing Algorithm: Smoothing  A numeric value is required. The higher the value the lower the noise. Default val- ues available for different organs. Similar to LCE filter. Reduces image noise with- out loss of sharpness. 1. Choose the desired series from the Patient Browser and click Load to Viewing. [1] Topogram 0.6 T20s Abdomen ABDWWO [9] Non Contrast 5x5 [10] With Contrast 5v5 Patient Browser [11] Delays 5x5 Patient Applications Transfer Edit View Filter Evaluation Sort Options Help [12] Lung With 5x5 Send Load to Viewing Ca Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2018 SIEMENS Master Template: EFF Date 22 Aug 17 | HOOD/HILS HOOD05162002647849 Healthineers Jobaid: Effective Date: 11/12/18| HOOD/HILS HOOD05162002966966 Job Aid | How to Apply an Image Filter Effective Date: 11/12/18| HOOD/HILS HOOD05162002966966 Patient Applications Transfer Edit View Image Tools Sc 3 PHASE ABD A Alamance Regional 693490 Sensation 40 2. In the Viewing Card, right mouse click an image and 25-Apr-1958, F, 47Y CT 2006A0.1.03 25-Apr-2005 H-SP-CR choose Select Series. This will activate all images in 08:23:37.99 9 IMA 1 the series (indicated with solid blue borders on all SPI 2 SP 53.0 images). 3. On the Eval tool tab, click the Filter icon. Patient Eval Select Series Select OnSucceeding X Select Marked Select Unmarked Deselect All 122 Copy kV 120 eff mAs 72 Mark ref mAs 200 10.5 Clear Document(s) SL 5.0/0.6101-0 320 -4/0 820f S3C0 A3 WITHOUT_CON Home Window Fit To Segment 4. Select the desired filter: LCE, HCE, or ASA. Filter X For LCE, choose the desired strength from the drop down. Operands: Series Description mage Range |Increment 9 Non Contrast 5x5 1-48 o LCE (Low-Contrast Enhancement) small HCE (High-Contrast Enhancement) small @ LCE (Low-Contrast Enhancement) medium small strong HCE (High-Contrast Enhancement) CASA (Advanced Smoothing Algorithm) very strong 8 ASA (Advanced Smoothing Algorithm) ABDOMEN 8 For ASA, choose LCE (Low-Contrast Enhancement) small Result Series Description: Non Contrast 5x5_LCE_S9_1 the desired organ HCE (High-Contrast Enhancement) characteristic. ASA (Advanced Smoothing Algorithm) ABDOMEN 8 ABDOMEN HEART OK Cancel Help EXTREMITIES Description: Non Contrast 5x5_ASA_S9_ HEAD NECK Ready 5. If desired, rename the series in the Result Series Description field. 6. Click OK to apply the filter. The new series Abdomen ABDWWO [1] Topogram 0.6 T20s will be saved to the Patient Browser. [9] Non Contrast 5x5 [10] With Contrast 5x5 [11] Delays 5x5 [12] Lung With 5x5 [13] Non Contrast 5x5_LCE_S9_1 /com/ /// / Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2018 Page 2 of 3 Job Aid | How to Apply an Image Filter Effective Date: 11/12/18| HOOD/HILS HOOD05162002966966 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 (herein- after 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 de sign, are reserved. Copyright © Siemens Healthcare GmbH 2018 ………………………………………………………… Siemens Healthineers Headquarters Siemens Healthcare GmbH Henkestr. 127 91052 Erlangen, Germany Telephone: +49 9131 84-0 siemens.com/healthineers Published by Siemens Healthcare GmbH © Siemens Healthcare GmbH, 2018 Page 3 of 3