Table of Contents
8 X-ray Tube and Generator
8.1 X-ray tube
•
The Performix
focal spots.
•
The tube supports normal and Hi Resolution imaging modes.
•
80 kW peak power (large spot, 0.3 second exposure, 120 kV and 140kV, Non-Hi-Res Mode)
•
49 kW peak power (small spot, 0.3 second exposure, 100 kV, 120 kV and 140 kV, Non-Hi-
Res Mode)
8.2 Generator Serial Load Rating
(Reference IEC 60613:1989/2010, 21CFR 1020.30, 21CFR 1020.30 (h)(2)(iii) and 21CFR
1020.30 (h)(3)(v))
The serial load ratings shown in
total cycle time of 10 minutes. These ratings are applicable for the nominal anode rotation
speed of 8400 RPM.
These ratings apply to a system with computer controlled technique selection, scan mode, and
scan duration.
The system uses a mathematical model to track tube temperature.
This tube cooling algorithm delays the start of a scan, if necessary, to avoid exceeding
temperatures that may damage the tube anode or unit.
Table 15: Maximum permissible mA values for serial 0.3 second exposures (10 minute cycle
time)
Chapter 8 Equipment
HDw X-ray tube assembly provides mA capabilities for the small and large
™
Table
15,
Serial Scan mA Ratings: 0.3s
Scan Mode
kV
70
80
Normal
100
120
140
70
80
Hi-Res
100
120
140
Table 16
and
Table 17
Focal Spot
Extra Large
Large
375
375
580
580
720
720
735
665
630
570
N/A
375
N/A
580
N/A
540
N/A
450
N/A
385
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
below are applicable for a
Small
250
580
485
405
345
250
425
340
280
240
187
Table of Contents
Troubleshooting
