2002 GE Lightspeed Plus 4 Slice CT with 2017 TubeGE LightSpeed Plus 4 CT Scanner The GE Lightspeed Plus 4 slice CT scanner replaces the QX i and adds a new gantry design and scan times up to 0. 5 seconds. GE Lightspeed Plus Features 0. 5 second scan 6. 3 MHU Tube 70cm Aperture Applications 4 slice, Abdominal, Angiography, BMD Bone Mineral Density, Brain, CT Perfusion,Dental, Fluoroscopy, Lung analysis, Neurology, Orthopedic, Pulmonary, Radiotherapy,Whole Body