Hologic Faxitron CT, User Manual

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FAXITRON CT USER MANUAL | HOLOGIC | REVISION 002
SECTION
Schedule of
Maintenance
8
8-10
3D Resolution
The user should be familiar with using the Faxitron CT and be familiar with performing a 3D
scan. In this procedure, the 3D Resolution Phantom will be scanned in 3D mode,
reconstructed, and measurements performed on the reconstructed data.
As per standard procedure, the 3D volume data of the reconstruction will be stored in New
Volume (D:) > data directory. The file name is by timestamp and
– unless more data was
taken after scanning the resolution phantom
– will be the most recent file in the directory. The
volume data will be opened using ImageJ. To be accepted, the volume data of the 3D
Resolution Phantom must meet certain criteria for 3D resolution by measuring a line profile
through the wire in the middle of the reconstructed 3D Resolution Phantom.
Required Materials
•
The 3D Resolution Phantom is required for this test which is provided with the
system.
ACCEPTANCE CRITERIA
1. Place the Resolution Phantom in the center on the CT pedestal, taking care to make sure
the phantom is clean and free from debris.
2. Perform a 3D scan procedure on the 3D Resolution Phantom and allow the
reconstruction to finish.
3.
Locate the reconstructed volume data in the “Data” folder of the software installation
directory. It is named by timestamp and will be the most recent file in the directory.
4. Open the reconstructed volume in the ImageJ software.
5. Select the Line Selection tool from the icon toolbar as shown below.
8.11.0
3D Resolution
Test