KaVo 3D eXam, Operator'S Manual

Page: 104 / 170

Kavo 3D eXam ® Operators’ Manual
k990400 September 19, 2007
10-14
QA Water Phantom Test
The Water Phantom Test is a noise level test. The HU measurements
are taken at five different regions in the Water volume.
1. Remove Chin Cup and insert Phantom Platform.
2. Fill Phantom with water, approximately one inch from the top.
3. Carefully place Phantom on platform.
4. Using the Alignment Lasers such that the water bath is in the
center of rotation and the horizontal laser line is located across
the center of water depth.
5. Start test by selecting File > New Patient from the Main menu.
6. From the Patient Information Panel, click Add or right click an
existing image from database and select Acquire Now .
If adding a new patient, enter Water Calibration in the First
Name field and Noise Test in the Patient ID field.
7. Click OK to close the Patient Information box.
8. From the Volume tab in the Acquisition window, select the
following:
Exposure: Large
Height of Reconstruction Volume: Landscape 13cm
Resolution: .4 voxel
9. Click Preview to check the phantom position.