X-ray tube
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United States of America Patent
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-
Jan 15, 2002
Grant Date -
N/A
app pub date -
Mar 10, 1999
filing date -
Mar 10, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An x-ray tube has a vacuum housing containing a cathode arrangement that emits electrons and an anode having a target surface on which the electrons, accelerated by an electrical field and forming an electron beam strike in a focal spot, and having a quadrupole magnet system including a coil, for focusing and deflection of the electron beam. A control unit is connected to the quadrupole magnet system. The control unit is supplied with, or has stored therein various parameter sets of predetermined coil currents that can be activated, so that, dependent on the respective parameter set, the focal spot can be displaced discretely in azimuthal fashion onto particular locations of the target surface of the anode.
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