glossarySiemensCT

STRATON

Siemens' rotating-anode X-ray tube family with a liquid-metal bearing instead of the conventional ball-bearing anode axle. A thin film of liquid metal (gallium-based alloy) supports the rotating anode, allowing higher continuous power, faster anode cooling through direct conduction, and longer service life than ball-bearing tubes. STRATON first shipped on the SOMATOM Sensation family and remains the Siemens CT tube through the Definition era; the Vectron is the next-generation tube on go / X.cite / Force.

Why it matters to buyers: The CT X-ray tube is the single most expensive wear item on a CT scanner. STRATON tubes typically support higher duty-cycle protocols than ball-bearing alternatives and their service history is a primary determinant of remaining useful life on a refurbished Siemens CT.

Why it matters to engineers: Liquid-metal-bearing tubes have different failure modes than ball-bearing tubes — bearing leak, thermal conduction degradation rather than mechanical wear. Tube-hour and tube-scan counters are the primary health metrics. The tube-life considerations differ from a conventional rotating-anode tube.

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