Optimizing Your c.cam Image Quality Job Aid

Optimizing Your c.cam Image Quality MI Essentials - SPECT Description: Proper patient positioning is extremely important when using a small field of view camera. Truncation can be an issue. To properly position a patient using the c.cam, follow these instructions. Proper Patient Positioning 1. Position the patient on the chair so that his spine is centered on the chair. Chair center 2. Once the camera is in the MARK position, ensure that the heart does get truncated by viewing of the patient positioning monitor on the acquisition laptop. Lt Lateral Anterior Effective Date: 08/21/2018 | HOOD05162002931930 SIEMENS siemens.com/healthineers Healthineers Job Aid | Optimizing Your c.cam Image Quality Effective Date: 08/21/2018 | HOOD05162002931930 3. Prior to marking the points for determining the scanning orbit, ensure that the detectors are approximately an inch from the front and side of the patient. TTT 4. When the patient is positioned properly, the sinogram should look like the image below. % 68 o Patient Spine - Center of the Chair 5. Troubleshooting The most common issues that arise with cardiac imaging are: a. Truncation caused by improper patient positioning b. Excessive patient motion c. Cardiac creep Siemens Healthineers Services Page 2 of 5 Job Aid | Optimizing Your c.cam Image Quality Effective Date: 08/21/2018 | HOOD05162002931930 6. Improper Patient Positioning The first indication of improper patient positioning can be seen, not only in the cine of the raw data, but also in the sinograms. The sinogram in Step 5 was the result of good patient positioning. The sinogram displayed below demonstrates patient positioning that may lead to truncation of the myocardium. Truncation 7. Excessive Patient Motion This can be caused by patients shifting their bodies during the scan or significant changes in breathing. Another common cause is cardiac creep. This is typically caused by excessive excursion of the diaphragm post stress. The best way to avoid the issue is to let the patient relax on the chair for a couple minutes before starting the scan. 8. In the case of motion, it is always best to rescan the patient. If this is not possible, some motion can be corrected for the Quality Control Activity. Once in the activity, proceed to Motion Correction and select the Head Misregistration option. Please note that the option allows the data from the detectors to be corrected independently and does not indicate a mechanical issue with the camera. This may correct the slow upward creep of the myocardium over the length of the scan. Siemens Healthineers Services Page 3 of 5 Job Aid | Optimizing Your c.cam Image Quality Effective Date: 08/21/2018 | HOOD05162002931930 9. In the image below, the heart shadow in the top linogram shows a steady incline between frames 1- 32 and 33-64. The bottom linogram demonstrates how the motion correction can solve this issue. Before 100 57 255 00 576.00 5075.00 345.00 385.00 X Motion O Sinogram Linogram 28.00 536.00 505.00 345.00 308.00 Y Mcgon After % 32 57 35.00 20/8 00 905:00 345 00 306:00 X Motion Sinogram Linogram 54500 206.00 505:00 345 00 385.00 10. Top 5 Takeaways for Optimizing Image Quality a. Always center the patient in the chair to avoid truncation b. Avoid cardiac creep by having the patient relax on the chair before starting the scan c. Decrease patient motion by stressing the importance of holding very still and not breathing deeply during the scan d. Review the raw cine for excessive motion before releasing the patient e. Repeat scans on those patients who have greater than 5mm of motion or a hot loop of bowel overlapping the inferior wall Siemens Healthineers Services Page 4 of 5 Job Aid | Optimizing Your c.cam Image Quality Effective Date: 08/21/2018 | HOOD05162002931930 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 design, are reserved. 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