PEPconnect

CT Constancy for SPECT

CT Constancy Procedure for Symbia SPECT/CT Scanners 1. Install QC phantom at end of table. (2) (1) (3) (4) (7) (5) (6) 2. Use the hand controller to position the table into the “CT Brain” index via the following: a. •Press the “CT Index” button twice b. Press the “Bed Up” button (1) CT Brain Study Position (1) CT Body Study (2) (3) SPECT Position Study Position c. Position CT phantom so “etched” markings are centered on both the horizontal and vertical laser lights. 3. From the “MI Apps” drop down menu at the top of the screen select Options>Service>Local Service a. Delete password entirely and click “ok” SIEMENS www.usa.siemens.com/healthcare 848 Effective Date: 09/06/2016 Page 1 of 6 b. Select Quality Assurance Siemens Med Service Software - Microsoft Internet Explorer provided by Siemens AG ... [D|x SIEMENS Home Menu System Statusl Event Log Reports Help Service Software Configuration TuneUp Quality Assurance File & Image Tools Backup & Restore Control TestTools Start Quality Assurance DICOM Tests Utilities SoftwareDistribution Copyright @ Siemens AG, Berlin and Munich 2005. All rights reserved. The use of this software without a valid license is prohibited. 4. Select Constancy Quality + Constancy + IEC Acceptance + Evaluations SIEMENS www.usa.siemens.com/healthcare Page 2 of 6 5. Recommended tests are displayed with pre-selected checkmarks. Tests can be added or removed depending on site specific needs @ Siemens Med Service Software - Windows Internet Explorer provided by Siem ... ] Quality I Add. Window | Help | Home REFERENCE - Constancy Mi Quality Constancy Calibration (Click GQ to start Quality Constancy.) RM Phantom Check RM Lichtmarker Date : 13.02.2014 08:53:31 8ª M Sag/Cor Lightm R Prev. Image Pos Function Last Last Run R Reference Expires Run Tolerance Reference Tolerance RM Slice Lightmarker today Homogeneitv/Water Sag /Cor. Lightm. today today R Noise Prev. Image Pos. Slice today RIM MTE Homogeneity/Water today R Contrast Noise today R Low Contrast MTF today Contrast today R M Table Position Low Contrast today RT CTDI Air Table Position today +IEC Acceptance CTDI Air today Evaluations Customer CTDI 6. Confirm selection of desired tests by clicking go in the lower right corner. Go 7. Enter name of tester and press GO Quality Constancy Enter name of tester: tester Enter serial numbers: Slice phantom: Water phantom: Wire phantom: CTDI Body phantom: CTDI Head phantom: Dosimeter: 8. Press the Start key on the CT control box as promoted SIEMENS www.usa.siemens.com/healthcare Page 3 of 6 9. The CT Phantom Check test is performed 10. The Lightmarker test is loaded automatically a. Press Start on the CT control box b. Compare the position of the strip in the 12 o’clock position of the CT Phantom to the choices in the dialog box Check Z-Position of Phantom Z-Position Feed in 1 mm Feed out 1mm Back to main correct and scan and scan window KV 130 mAs 80 TI 1.0 GT 0.0 SL 1.0/1x1.0 250 0/0 S80s S1TO 2 Lightmarker 500 c. Select the corresponding image 11. The Sag/Cor Lightmarker test is started automatically a. Ensure CT phantom is positioned so the “etched” markings are centered on both the horizontal and vertical laser lights b. Press Start on the CT control box 12. The Prev. Image Pos. test is loaded a. Position CT phantom so the horizontal and vertical laser lights are on the edge of the phantom, just before the scan field. b. Press Start on the CT control box SIEMENS www.usa.siemens.com/healthcare Page 4 of 6 c. A horizontal line is displayed, move the horizontal line to the middle of the slice thinkness phantom d. Click Go e. Compare the 12 o’clock positon of the strip in CT phantom to the choices in the dialog box Check Z-Position of Phantom Z-Position Feed in 1 mm Feed out 1mm Back to main correct and scan and scan window 10cm KV 130 mAS 80 TI 1.0 GT 0.0 SL 1.0/1x1.0 250 0/0 S80s S1TO 2 Lightmarker f. Select the corresponding image g. Click Continue 13. The Slice Thickness, Homogeneity, Pixel Nose, and MTF tests are completed automatically 14. Click Go to start the Table Position test a. Draw a line on a piece of tape and place between PHS/Table b. Cut tape SIEMENS www.usa.siemens.com/healthcare Page 5 of 6 c. Click Go d. The pallet will move to -300mm e. Measure the actual distance with a ruler between the lines drawn on the tape T f. Enter Value and Click Continue Quality Table Position Enter actual value at 300 mm position: |300) Click CONTINUE, when ready. g. Repeat steps to move table +300mm, -300mm stepwise, and +300mm stepwise h. Enter corresponding values and Click Continue 15. Verify all desired tests are “In Tolerance” and repeat tests “Out of Tolerance” 16. Notify Clinical Service Engineer if tests remain “Out of Tolerance” SIEMENS www.usa.siemens.com/healthcare Page 6 of 6

  • symbia
  • quality control
  • physics