KaVo 3D eXam, Руководство оператора

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Kavo 3D eXam ® Operators’ Manual
k990400 September 19, 2007
6-6
b. Click the Delete button below the Quick Picks drop-down
list box.
c. A confirmation box is displayed, click Yes to delete.
Volume Scan
After the acquisition is launched and
the
Volume tab is selected, do the
following:
To acquire a Volume Acquisition:
1. From the Main menu select File
> New Patient .
2. From the Patient Information
Pane click Add .
3. From the Acquire window, click
the Volume tab.
4. Select Small or Large Exposure
The Operator is required to
determine the Patient’s head
size.
Small is normally selected
for young children and small
elderly females.
Large is for a
normal size adult or large child
(head size).
5. Select Resolution by using the
corresponding drop-down list
box.
In general, the lower the Voxel Size and the longer the Scan
Time, the better the resolution and detail; however, a smaller
Voxel Size and longer Scan Time creates a larger data set so the
reconstruction time is longer. Also, these protocols are more
sensitive to Patient movement, so it is critical to restrict Patient
movement during the scan. Longer scan times also deliver a
higher radiation dose.
Standard scans should be taken at Full 13cm, 8.5 sec, 0.3 Voxel .
This captures the entire maxillofacial region from above the
condyles down to below the lower jaw, at the most practical scan