Hologic DISCOVERY A, Техническое руководство

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Discovery QDR Series Technical Manual
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2. Center the table, place the phantom on the table and set up a exam using the AP/
Lateral setup, uncheck the use default scan mode box, click next, select Array
scan mode for the AP component and Fast Array for the Lateral component. The
sides of the phantom should be aligned parallel to the table, using a ruler if neces-
sary.
3. Press and hold Enable until the arm and table move into position. Recheck phan-
tom alignment with laser, and click continue.
Note: Do not move the arm or table, otherwise the test will have to be started
over.
4. Change the scan length to 6 inches, and click start scan to begin the AP compo-
nent.
5. When scan has finished, select Spine as the analysis method, and click Next.
6. Analyze the scan, and click start position. Check at bottom of screen that the cen-
terline angle is + or - 2 Degrees.
7. Click close, and then hold the enable button to lateral position.
8. Click Start Scan to perform Lateral component.
9. Press and hold the Enable switch to return to AP position.
10. Analyze scan (refer to user guide for Lateral analysis) and close the screen.
11. Click exit to close the Exit Analysis screen.
12. Restart QDR for Windows software in service mode (if not already). From the
QDR Main window, select Utilities, Service Utilities, Field Service Calibration.
13. Select Highs/Lows for Array Spine Phantom
14. Select the AP scan just performed and click next
15. Click continue on the Calculated highs and lows page.
16. Select Highs/Lows for Array Lateral Phantom.
17. Click continue on the Calculated highs and lows page.
18. Click Temp Write to write temporary results and click continue to exit the write
dialog box.
3.5.9 Calibration of Area and BMC, for Array Scan Modes
After the machine has been calibrated for thickness measurement in the array mode, it
must be calibrated for the array AREA and BMC measurements.
1. Restart the Discovery software in service mode (if not already). Center the table.
From the Discovery Main Menu screen, select
Utilities|Service Utilities|AP
Reposition . Return to the menu and select Utilities|Service Utilities|Auto
Scan .
2. Select the Spine Phantom.