Varex GS-298
The Varex GS-298 is a grid-controlled rotating anode X-ray tube that was supplied as an OEM tube for several Philips Tomoscan CT systems. It is part of the G-297/G-298 family, with the G-298 version providing grid control for rapid electron beam switching used in CT applications.
Philips compatibility
The GS-298 has been used as an OEM replacement for older Philips Tomoscan CT scanners, including:
- Philips Tomoscan M
- Philips Tomoscan M/EG
The Varex GS-298 is a grid-controlled rotating anode X-ray tube that was supplied as an OEM tube for several Philips Tomoscan CT systems. It is part of the G-297/G-298 family, with the G-298 version providing grid control for rapid electron beam switching used in CT applications.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Varex Imaging (formerly Varian) |
| Model | GS-298 (G-298) |
| Tube type | Rotating anode, grid-controlled CT X-ray tube |
| Maximum tube voltage | 150 kVp |
| Anode diameter | 102 mm (4.0 in) |
| Anode angle | 12° |
| Anode heat storage | 445 kJ (600 kHU) |
| Focal spots | 0.3 / 0.8 mm (IEC 60336) |
| Nominal power | 12 kW (small focus), 49.5 kW (large focus) |
Notes
- The GS-298 is an older CT tube and is no longer in current production.
- Newer Philips Tomoscan models (such as SR5000, SR6000, and AV) use later Varex tube families including GS-3070, GS-3072, and GS-2070, depending on the scanner model.
