GE LightSpeed Ultra 8

The GE Lightspeed Ultra 8 Slice CT System is a
third generation multi-slice helical CT Scanner.
It features a 53 kW generator, 6.3 MHU tube,
and a fast gantry rotation time of 0.5 seconds.
Capable of imaging 8 slices per rotation with
widths of 8 x 125 mm and 8 x 2.5 mm as well as
4 slice widths of 4 x 1.25 mm to 4 x 5 mm slices.

SCAN PARAMETERS
.5, .6, .7, .8, .9, 1, 2, 3, 4 second scans
80,100,120,140 kVp
10- 440 mA in 10mA increments
.63, 1.25, 2.5, 3.75, 5, 7.5, 10 mm slice thickness
1 second minimum interscan delay
25, 50 cm scan fields of view
4 x 912 No. detection channels
120 sec max scan time
160 cm max scan volume

IMAGE RECONSTRUCTION
Silicon Graphics Octane Computer
.5 sec recon time per slice
512 x 512 recon matrix

DATA STORAGE (STANDARD)
18GB Hard Disk for 20,000 Images
20,000 Online Images
2.3 GB MOD Archival Storage
18GB Hard Disk for 2000, 1 sec. scan raw data files

DISPLAY
(2) 21” Flat Screen monitors
1280 x1024 Matrices, Pixels
Up to 16 slices displayed at once

TABLE/GANTRY
51-99cm vertical range
170cm longitudinal scannable range
Supports 400 lb patients accurately
70 cm gantry aperture
Up to 50cm SFOV
±30 gantry tilt

GENERATOR/TUBE
53.2 kW maximum power
6.3 MHU anode heat capacity
840 KHU/min max anode heat dissipation rate

SITE REQUIREMENTS
Minimum Suite Size:
15.5 feet wide x 19.5 feet deep x 9 feet high
Recommended Suite Size:
19.5 feet wide x 24.5 feet deep x 9 feet high

SCAN PROTOCOLS
.300 Available user selected protocols to build
kV, mA and Time Accuracy
Kilovolts
Excludes first 10 msec of exposure

MILLIAMPERES
mA Selections
10 to 440 mA, by 10 mA increments
Patient scanning subject to scan limitations or 53.2 max mA Accuracy
Patient scanning selections of 10-440 mA
Calibration scan selections of 10-30 mA +/- 4mA

EXPOSURE TIME
Normal Axial Scan Selections: .5, .6, .7, .8, .9, 1, 2, 3 or 4 sec Cine: .5,.6,.7,.8,.9,1,2,3 or 4 sec

Kv selections 80, 100, 120 and 140 kV
Basic kvp accuracy +3% +/- (3% +2kV)
Kvp during first 10 ms Basic accuracy (see above) +/- 5kV
Scout Scan range 20-1600mm at 100mm/sec
Exposure time 0.20-16.0 sec
Standard spatial resolution 0.54 mm or 9.3 lp/ cm @ 0%
High spatial resolution 0.33 mm or 15 lp/ cm @ 0%
Low contrast detect ability 5.0 mm@ 0.3% at 100mAs (18mGy)