• Topic ID: id_11038689
  • Version: 3.0
  • Date: Sep 13, 2021 2:19:15 AM

Quality Assurance Test

Prerequisites

This document provides the necessary steps to ensure system image quality before releasing.

1 Phantom Setup

Procedure

  1. Record the phantom serial number on GE e4879 Component Replacement Form.
  2. Perform Center Phantom
  3. Set Internal Landmark.

2 Acquire Scans

Procedure

  1. Select NEW PATIENT from bottom of Scan monitor.
  2. Type the following entries in the listed Patient Information fields:
    1. Patient ID: Service
    2. Patient Name: Quality Assurance Test
  3. Select Anatomical Selector Service tab from Protocol Selection.
  4. Select MANUFACTURING, IMGSER 20CMQA from Anatomical Selector Service tab.
  5. Select CONFIRM.
  6. Press START on SCIM / GSCB when it flashes. Scans are performed.
  7. Select NEXT SERIES.
  8. Select CONFIRM.
  9. Press MOVE TO SCAN on SCIM /GSCB if it flashes.
  10. Press START on SCIM / GSCB when it flashes. Scans are performed.
  11. Repeat Steps [7] – [10] until all series have been performed and completed.
  12. When all series are completed, select END EXAM.
  13. If a PPS Response window is displayed, select COMPLETE.

3 Analysis

Procedure

  1. Select SERVICE desktop and move SERVICE desktop window to left monitor.
  2. Select IMAGE QUALITY tab from SERVICE desktop.
  3. Select IMAGE ANALYSIS and move IMAGE ANALYSIS window to left monitor.
  4. Select scanned examination from right monitor List/Select browser.
    note:

    Series 1 and Image 1 should be selected. If not, select them.

  5. Press AUTO 1X radio button on IMAGE ANALYSIS window.
  6. Select AUTO 1X selection button, IMGSER 20QA, and first test choice.
    note:

    Number of test choices correspond to the number of series in the scanned examination. The order of the test choice correlates with the series number of the scanned examination (Series 1/Test 1, Series 2/Test 2, etc.).

  7. Select ACCEPT.
    note:

    At test completion, test data results, including specification limits and Pass/Fail results, are displayed.

    note:

    At the top of the results window, the test Pass/Fail summary result is posted.

  8. Record results on GE e4879 Component Replacement Form.
  9. Click DISMISS from Report window.
  10. Select next series from right monitor List/Select browser.
  11. From IMAGE ANALYSIS window, select AUTO 1X selection button, and select IMGSER 20QA and next test choice.
    note:

    If test choice has multiple selections, execute each selection.

  12. Select ACCEPT.
    note:

    If test requires user input, follow instructions in IMAGE ANALYSIS window lower right pane.

    note:

    At test completion, test data results, including specification limits and Pass/Fail results, are displayed.

    note:

    At the top of the results window, the test Pass/Fail summary result is posted.

  13. Record results on the GE e4879 Component Replacement Form.
  14. Click DISMISS from Report window.
  15. Repeat steps [10] – [14] until all tests have been performed.
  16. When all tests are completed, click QUIT.
    note:

    If any test fails, repeat failed test. If the test fails persistently, perform appropriate corrective action.

4 Image Review for Bands and Streaks

Procedure

  1. From IMAGEWORKS desktop List/Select browser, select scanned examination, and Series 3.
  2. Select VIEWER and review all images from series for band and streak artifacts.
  3. If any images depict bands, perform steps in Band Analysis, Band Analysis, on those images.
  4. If any images depict streaks, perform Streak Test.
  5. In viewer, select series 5 and review all images from series for band and streak artifacts.
  6. If any images depict bands or streaks, repeat Step [3] or [4].
  7. Repeat Steps [5] – [6] for Series 7 and 10.

5 Band Analysis

Procedure

  1. Select SERVICE desktop and move SERVICE desktop window to left monitor.
  2. Select IMAGE QUALITY tab from SERVICE desktop.
  3. Select IMAGE ANALYSIS and move IMAGE ANALYSIS window to left monitor.
  4. From the List/Select browser on right monitor, select image to be analyzed.
  5. Press MANUAL radio button on the IMAGE ANALYSIS window.
  6. Click MANUAL selection button, then BAND.
  7. Click ACCEPT. The image is displayed in IMAGE ANALYSIS window with a Band ROI.
  8. Follow instructions, in IMAGE ANALYSIS window lower right pane, to size Band ROI and analyze.
  9. From results, if Avg. Ref. Band Factor is out of specification range of +/-2.8, perform appropriate corrective action.
  10. When all tests are completed, click QUIT.

6 Finalization

Store the GE e4879 Component Replacement Form with system history records. The results are stored in a text file on the scanner and can be retrieved at /usr/g/service/state/image_analysis.log.