GE LightSpeed Ultra 8

GE LightSpeed Ultra 8

Description

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 IMAGE QUALITY

Specifications

ConditionUsed
Kv selections80, 100, 120 and 140 kV
Basic kvp accuracy+3% +/- (3% +2kV)
Kvp during first 10 msBasic accuracy (see above) +/- 5kV
ScoutScan range 20-1600mm at 100mm/sec
Exposure time0.20-16.0 sec
Standard spatial resolution0.54 mm or 9.3 lp/ cm @ 0%
High spatial resolution0.33 mm or 15 lp/ cm @ 0%
Low contrast detect ability5.0 mm@ 0.3% at 100mAs (18mGy)