Mobile PET/CT: GE DiscoveryMobile PET/CT: GE Discovery

The GE Discovery ST Scanner consists of:

• One integrated gantry containing slip-ring design CT X-Ray tube and multi-slice detector, 24 PET detector rings of bismuth germinate (BGO) crystals, high-speed acquisition electronics and PET image reconstruction system with high performance array processor system and reconstruction algorithms
• Volume Viewer Plus for fast and flexible PET/CT review including PET/CT fusion
• One patient imaging table with extended dual patient scan range
• One integrated Operator Console

System Components

CT Gantry

• Aperture: 70 cm
• Focus to Detector: 95 cm
• Focus to Isocenter: 54 cm
• Maximum SFOV: 50 cm
• Maximum CTAC FOV: 70 cm
• Rotational Speeds: 360º in 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 2.0, 3.0 and 4.0 sec
• Integrated start scan button with countdown to X-ray on
• Scan plane towards front of gantry for improved position access

CT X-Ray Tube

Performix ADV Metal-Ceramic Tube Unit. Design optimized for exams requiring a large number of scans without tube cooling

• Heat Storage Capacity: 6.3 MHU
• Heat Dissipation:
  • Anode (max) 840KHU/min
  • Casing (cont.) 300KHU/min
  • Tube Unit: 6.9 kW continuous for 10 minutes

CT High Voltage Generation

• High-frequency on-board generator. Continuous operation during scan
• 2 kW output power
• kVp: 80, 100, 120, 140 kVp
• mA: 10 to 440 mA, 5 mA increments

PET Acquisition Subsystem

• Detector ring diameter: 88.6 cm
• Detector layout: 10,080 individual crystals a24 rings or 420 crystals each
• Crystal type/size: BGO 6.3 mm trans axial, 6.3 mm axial, 30 mm radial
• 8 mm tungsten interplane septa, 5.4 cm long to minimize random and scattered coincidences
• Automatic retraction of interplane septa to switch from 2D too 3D mode or back in <30 seconds
• Patient port size: 70 cm diameter
• Low acoustic noise (approx. 65 dBA) at gantry center