NOTE: If the system has an unrecognized X-ray tube:
•
The performance of the system cannot be guaranteed.
•
Tube warmup scans may cause subsequent tube cooling delays. The tube
warmup will run in
Auto scan
mode.
•
Fast calibration techniques are designed specifically for GE tubes. GE cannot
guarantee that the performance of the system will meet specifications with an
unrecognized tube.
3.3 Daily QA workflow
1.
From the image monitor, click the
Utilities
icon .
2.
From the
Utilities
menu, click
Daily Prep
, then
Fast Cal
.
The
Service-Calibration Tools
window opens.
3. Select
Fast Cal
from the drop-down and click [Run].
4.
When the fast calibration is complete, perform a quality assurance scan.
5.
Restart the system, if not restarted in the last 24 hours.
3.4 Tube Warmup
NOTICE
Please refer to the Safety chapter for important safety information regarding the
use of the equipment and software on this system.
The system operates most efficiently within certain parameters. These parameters are
established by warming the tube using a preset group of exposures. When you perform a tube
warmup at least once every 24 hours and at any system prompt, it reduces the possibility of
image artifacts, and may aid in prolonging the life of the tube.
•
SmarTube
™
warmup optimizes system scanning performance by including an indication of
the temperature state of the tube. Operating the system in the green zone will maximize
tube life.
•
The tube state is indicated by the
icon. The time indicated next to the state button
represents approximately how long before the tube is cold. If the tube temperature is not in
the optimal range, a message will display when your cursor is hovered over the icon to
indicate the tube condition.
Table 1: Tube Icons
Tube Icon Tube Message User Action
Green Tube is optimal. Normal scanning temperature. Proceed with scanning.
Time indicates how long the tube can remain idle before
tube warmup is required.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
Chapter 9 Startup and Shutdown 199