Description
Overview
The GE LightSpeed RT is a dedicated radiation oncology simulation and diagnostic CT scanner designed to bridge the gap between diagnostic imaging and precise radiation therapy planning. Featuring an extra-wide 80 cm gantry aperture, the LightSpeed RT eliminates spatial constraints when positioning oncology patients with bulky breast boards, prone headrests, immobilizing vacuum cushions, or radiation masks.
Equipped with a 60 cm wide anatomical Field of View (FOV)—expanding beyond standard 50 cm diagnostic limits—the system captures skin-to-skin patient contours without edge truncation artifacts. Driven by the high-capacity Performix™ tube and GE’s Advantage Sim / Advantage 4D oncology software, clinicians can assess organ motion over time, contour target tumors accurately, and calculate precise radiotherapy treatment plans.
Key Features & Advanced Technologies
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Extra-Large 80 cm Gantry Bore: Provides clearance for patient positioning devices, arm boards, and radiation therapy immobilization hardware.
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60 cm Wide Anatomical FOV: Extends reconstructive coverage to capture complete outer body contours, preventing edge artifacts in treatment planning calculations.
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Flat-Top Oncology Couch: Specialty flat table surface designed to mirror radiation therapy linear accelerator (Linac) treatment beds, ensuring positional reproducibility between simulation and treatment delivery.
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Advantage 4D Respiratory Gating: Tracks organ and tumor movement throughout the respiratory cycle, helping oncology teams calculate precise internal target volumes (ITV) for lung, esophageal, and abdominal cancers.
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Performix™ 6.3 MHU X-Ray Tube: High-capacity tube designed to handle multi-phase oncology simulation runs without thermal delays.
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ASiR™ (Adaptive Statistical Iterative Reconstruction): Optional low-dose iterative reconstruction engine that reduces radiation exposure by up to 40% while preserving low-contrast diagnostic detail.
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SmartDose & DoseWatch Suite: Incorporates 3D mA Modulation (SmartScan / AutomA) to adjust tube output continuously based on body thickness and anatomy.
Technical Specifications
| Parameter | Specification |
| Slice Capability | 16-Slice Acquisition per Rotation |
| Gantry Bore Aperture | 80 cm Extra-Large Aperture Clearance |
| Reconstruction FOV | 50 cm Standard up to 60 cm Wide FOV (Max Extended) |
| Gantry Rotation Speed | Sub-second rotation down to 0.5 seconds |
| X-Ray Tube Type | Performix™ 6.3 MHU Anode Capacity |
| Generator Output | 53.2 kW (up to 440 mA capacity) |
| Spatial Resolution | Up to 0.35 mm Isotropic Voxel Detail |
| Patient Table Design | Carbon-fiber Flat-Top RT Couch |
| Patient Couch Capacity | 204 kg (450 lbs) weight clearance |



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