In an X-ray tube, electrons are accelerated in a vacuum by an electric field and shot into a piece of metal called the "target".
Electron beam tomography (EBT) is a specific form of computed tomography (CAT or CT) in which the X-ray tube is not mechanically spun in order to rotate the source of X-ray photons.
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As in standard X-ray tubes, part of the electron current energy when hitting the tungsten target is converted into photons.
Peak kilovoltage (kVp) is the maximum voltage applied across an X-ray tube.
Additionally the giant pill on the Spree riverside was meant to be a reminder of medical equipment like the X-ray tube, the Cardiac catheter and dialysis which are German developments.
Some X-ray examinations (such as, e.g., non-destructive testing and 3-D microtomography) need very high-resolution images and do therefore require X-ray tubes that can generate very small focal spot sizes, typically below 50 µm in diameter.
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