Operator's Guide
437D140 Rev. I
Additional Techniques
11-65
Auto Centering Mode
HOW IT WORKS: The Auto Centering option automatically centers the spine in the image. When Auto Cen-
tering is checked (enabled) [default], a ‘U’ shaped scan is performed prior to the Measure scan (see figure). The
start and end points marked by the operator will be on the path of the U.
Figure 11-3:
Auto-Centering U-Scan
Note:
The “Force mark points on-axis” option should be disabled (not checked) to fully take advantage
of the Auto Centering mode.
If the start and end points are found to be off center, they are recalculated and implemented for the Measure
scan. No operator intervention is required and there is no need to physically reposition the patient.
Note:
WHAT TO DO: There are four possible warning dialog boxes that may pop up. They are reprin-
ted next, and discussed.
1. Click on Continue to acknowledge any of the warnings.
2. Click on Stop to reposition and remark the patient.
If automatic centering was not successful, the original start and end points would be used for the
Measure
scan and the following warning message will display:
“The original mark points are being used because the automatic centering of the spine was not suc-
cessful.”
In this case, Norland recommends that the scan be terminated and the scan region re-marked. Take care to
mark 1-cm below the xiphoid and 2-cm below the iliac crests. Note that marking too high or too low caused the
Auto Centering to fail.
If metal was detected on the U shaped scan, the following warning message will display.
“The original mark points are being used because metal was detected.”
If auto centering determined that the start and end points would require shifting by 5-cm or more, the fol-
lowing warning will display.
“The original mark points are being used because the scan was moved 5-cm or more.”
If auto centering determined that the scan would exceed the scanner arm travel limits, the following warning
will display.
“The scan extends off the table. Either remark the scan location or adjust the scan parameters.”
Summary of Contents for Elite 437A150
Page 1: ...DXA Bone Densitometer Operator s Guide Elite Model 437A150 Operator s Guide 437D140 Rev I...
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Page 66: ...11 Click Operator s Guide 437D140 Rev I 3 10 Installation and Setup...
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Page 124: ...Sample Printed QA Results Report Operator s Guide 437D140 Rev I 4 16 Basic Operation...
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Page 198: ...Operator s Guide 437D140 Rev I 7 20 Scanning AP Spine...
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Page 238: ...Figure 8 6 Page 2 of the Bone Exam Report Operator s Guide 437D140 Rev I 8 32 Scanning Hip...
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Page 326: ...Operator s Guide 437D140 Rev I 11 36 Additional Techniques...
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Page 446: ...Label Locations continued Operator s Guide 437D140 Rev I 17 18 Technical Reference...
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Page 459: ...Operator s Guide 437D140 Rev I Reference Data Sets 18 9...
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