CT MACHINE COMPARISON CHART
CT Scanner Model > LightSpeed RT 16 > Brilliance 16-Slice
Company GE Healthcare Philips Healthcare FDA Clearance/ CE Mark YES, 2008 (both) YES Intended Use Treatment planning, bariatrics & general radiology (including CTA and CTC) Neuro, general radiology >> GANTRY Geometry Rotate-rotate, slip ring Rotate-rotate, 16-slice Detectors, type HiLight, ceramic matrix II Solid-state GOS Detector width 20 mm 0.75 mm # of rows 24 16 Reconstructed slice 0.625, 1.25, 2.5, 0.6 – 12 Elements per row 912 672 # of detection elements 21,888 16,128 Rotation times, sec., 360° 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4 0.5, 0.75, 1, 1.5, 2; 0.4 Partial N/A 0.28, 0.33 (240) X-ray fan beam angle 55 degrees 57 degrees Gantry tilt 30 degrees +/- 30 degrees Gantry dimensions (cm) 189 x 223 x 101 203 x 239 x 94 Gantry weight 1920 kg 1764 kg Gantry aperture 80 cm 70 cm Scan localizer Laser Laser
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CT Scanner Model > LightSpeed RT 16 > Brilliance 16-Slice >>X-RAY TUBE X-ray tube anode N/S N/S Heat storage, HU 8,000,000 8 (MRC technology) Dissipation rate, HU/min 1,782,000 1608 kHU Tube cooling Oil/air Oil/air Tube focal spot (mm) 1.2 x 1.2 to 0.9 x 0.7 Small 0.5 x 1, large 1 x 1 Optional x-ray tubes N/A N/S >>X-RAY GENERATOR kW output 100 60 kVp range 80, 100, 120, 140 90, 120, 140 mA range 10 to 800 20 to 500 in 1 mA increments >>SPIRAL SCANNING Max scan time 120 seconds 100 seconds Max scan volume 170 cm (200 option) 175 cm Spatial resolution, lp/cm Same as axial Up to 24 Pitch 0.5625, 0.9375, 1.375 0.2 to 1.7 Reconstruction time Up to 16 ips N/S >>PATIENT TABLE Vertical 43 to 99.1 cm 58 to 103 cm Longitudinal 170 cm (200 option) 190 cm Scannable range 170 cm (200 option) 175 cm Max load capacity 650 lb or 500 lb +/-0.25mm 204 +/-0.25 >>IMAGE RECONSTRUCTION Computer CPU Open architecture (LINUX) Intel, Windows OS Scan FOVs 10 to 50 Up to 50 Reconstruction matrices 512 x 512 512×512; 768×768; 1024×1024 Reconstruction time, sec Up to 16 ips N/S Per slice, sec As fast as 0.063 Up to 20ips w/ 3-D cone beam For localization scan, sec Real time N/S
CT Scanner Overview The CT Scan Procedure & Risks Types of CT Scanners Economic Considerations Tips for Purchasing a CT Scanner CT Site Planning CT Scan Radiation
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CT Scanner Model > LightSpeed RT 16 > Brilliance 16-Slice >> DISPLAY Monitor size 2 – 19 inch LCD 19 inch LCD Matrices 1280 x 1024 pixels 1280 x 1024 pixels Range of CT numbers -1024 to 3072 -1024 to 3072 Image enlargement Up to 8x Available Maximum # of slices 16 1,000 w/ scrolling >> IMAGE STORAGE Hard disk, MB 73 GB 146 GB # of online images 250,000; 512 x 512 matrix 250,000 Archival storage 8.5 GB DVD-R/CD-R DVD-RAM, CD-R >>RADIATION DOSE Dose-modulation technique SmartmA- DoseRight ACS Pediatric-specific Color coding for kids Pediatric protocols Prospective ECG gating N/A Available Retrospective ECG N/A Available >>PERFORMANCE Min. inter-scan time, sec 1 0.5 Dynamic scan rate 960 2284 High-contrast spatial res. 15.4/8.5 Ultra-high resolution 0% MTF, lp/cm 15.4 24 50% MTF, lp/cm 8.5 8 Low contrast resolution 5 at 0.3% at 13.3 mGy; 4 at 0.3% Noise (% at 2.5 rads) 0.32 at 2.85 rads 0.27 CT Angiography Standard (MiP) Available CT Simulation Optional Available 3-D Package Optional Available DICOM 3.0 interface YES YES Additional features Wide-bore, multi-purpose capabilities such as routine scans, interventional procedures, radiation therapy planning and scan trauma. Other features: AutoScan, AutoFilm, AutoVoice, AutoArchive, AutoTransfer, N/S
The Bottom Line: The GE LightSpeed 16-slice has features that separate itself from the Philips product. GE has a higher Kw rating (100) and mA (800). The GE also offers a higher scan at 120 seconds, compared to Philips’ at 100 seconds. However, the Philips Brilliance 16 system is much more affordable, possibly saving someone around 20 to 30% compared to the GE unit. If these differences, features or any other items on this comparison chart do not make a difference for your specific application, then the Philips system may prove to be a scanner that will fall within your price range.
