Hologic DISCOVERY A, Technical Manual

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Discovery QDR Series Technical Manual
3-63
3. Click
OK
at Patient Confirmation dialog box.
4. Select AP Lumbar Scan Type, input
20
for number of scans, uncheck Use
Default, and click the
Next
button.
5. Select Array and click the
Next
button.
6. Analyze the first scan manually. Note the scan #. Click the
Close
button to exit
analysis.
7. From the Discovery Main Menu screen, select
Utilities|Service Utili-
ties|Auto Analyze
.
8. Click on unanalyzed Scans and select the 19 scans, click on
Compare
radio but-
ton and then click the
next
button.
9. Now, select the scan analyzed in step 6 and click the
next
button.
10. The 19 scans will now be compared with the analyzed scan.
11. From the Discovery Main Menu screen, select
Utilities|Service Utili-
ties|Field Service Calibration
.
12. Click the
ACF/BCF
button. Select the 20 scans, click
next
, and then click
Con-
tinue
at the Successfully Calculated dialog box.
13. At the Field Service Calibration dialog box, click the
Write
button to write the
values to ARRC.TXT file. Click the
Continue
button to return to the Discovery
Main Menu screen.
14. Print ARRC.TXT file by using these steps:
• Press the
<Ctrl><Esc>
keys to bring up the WindowsXP Taskbar.
• Select
Find
• Select
Files or Folders
• Type
ARCC.TXT
in the Named: edit box.
• Click
Find Now
or simply hit the
<Enter>
key.
• Right click on the first ARRC.TXT entry in the list presented to you and
select
Print
from the menu. (You want the ARRC.TXT entry in the
QDR\DATA directory NOT the QDR\DATA\LRTEMP directory.)
15. Verify ACF=ACFL=ACFT and BCF=BCFL=BCFT in ARRC.TXT.
3.5.10 RECALYZE and Add Array AP Scans to the QC
Database
Once the unit has been calibrated, AP scans must be re-analyzed and added to the QC
database.
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. From the Discovery Main Menu screen, select
Utilities|Service Utili-
ties|Auto Analyze
.