Scan Data Manager - GE Revolution CT User Manual

8 Scan Data Manager

Scan data
During a scan, x-rays pass through the patient's anatomy with each rotation of the gantry and
strike the detectors. The signal from the detectors is converted to an analog signal that is then
captured as part of the scan file. This is the scan data (or raw data). The scan data contains all
of the information gathered during an exposure.
Lock scan data
As patient exams and scans are performed on the system, the raw scan data is saved to a
database. By default, the scan data from the earlier scans is deleted to make room for the data
from newer scans. However, it may be necessary to retain (lock) the scan data for
reconstruction at a later time or perform additional reconstructions.
Unlock scan data
Once scan files are no longer needed, you can unlock them so they can be overwritten with new
data. Unlocked scan data files are overwritten as the system requires space for new scan data
files.
Save scan data
You can save scan data to USB media if scan data needs to be retained for an indefinite time or
sent elsewhere for diagnostic review.
Scan data may be saved to a USB hard drive.
Saved scan data can be restored back to the system database for later reconstruction.
NOTE: Only scan data from a Revolution CT system can be restored on a Revolution CT
system.
The system overwrites the oldest scan files on the system when restoring scan data.
If you have several files to restore, lock the scan files as they are restored to make
sure the system does not overwrite them.
Scan Data Manager
From the File Manager control panel, click the [Scan Data Manager] icon
Chapter 17 Data Management
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
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