Hologic QDR 4500 - Page 118

QDR

4500 Technical Manual
4-32
4. From the main menu, press <P> for biograPhy, <Insert> to add, and choose spine
phantom biography.
5. From the main menu, press <S> to Scan, <L> for AP/Lateral, then <1> for AP setup.
The laser will turn on and a message will appear on the monitor to check the laser
targeting. Re-check the laser targeting and move the phantom if necessary (do not move
the arm or table).
6. Press any key to continue.
7. Press <2> for AP Scan.
8. Press <A> for Array.
9. Type “6” followed by <F10> to run a six inch scan.
10. Upon completion, press <A> to Analyze.
11. Press <End> three times to begin analysis.
12. At the “Insert or delete points...” prompt, press <End>.
13. A dashed line will appear (centerline) and an angle will be displayed just below the
scan. The angle must be between -2 and +2 degrees.
14. Press <End> twice to complete the analysis.
15. Press <Esc> to return to the Lateral Scan menu.
16. Press <3> to perform a Lateral Setup.
17. A message will appear asking you to hold the Enable Motion switch (on the control
panel) while the arm moves to the Lateral position.
18. Hold down the Enable Motion switch until the arm and table are in the lateral position.
When the motion is complete, the Lateral Scan menu will appear on the screen.
19. Press <4> for Lateral scan.
20. Press <F> for Fast Array scan.
21. Press <F10> to begin scanning.
22. Upon completion, press <5> to return to the AP position. A message will appear to hold
down the Enable Motion switch while the system moves into position.
23. Hold down the Enable Motion switch until the arm and table return to the AP position.
When the motion is complete, the Lateral Scan menu will appear on the screen.
24. Press <6> to analyze the Lateral Scan.
25. Press <A> to analyze.
26. Press <Enter> and use the arrow keys to change the level and width (contrast) until the
posterior elements of the spine are visible. Press <Enter>.
27. Press <B> and use the arrow keys to make the ROI vertical. Press <Insert> and use the
left and right arrow keys to align the left edge of the ROI with the edge of the posterior
elements of the spine.