Controlling an x-ray tube
AssigneeSiemens Healthcare GmbH
InventorJosef Deuringer
Life of this patent
Estimating the term…
Abstract
A method is for controlling an X-ray tube including at least one grid electrode arranged between an anode electrode and a cathode electrode. In an embodiment, the method includes focusing, via a focusing unit, a flow of electrons from the cathode electrode to the anode electrode; applying in a first switching state, a first electrical grid potential to the at least one grid electrode via a switching unit, to pinch off the flow of electrons between the anode electrode and the cathode electrode; and applying in a second switching state, a second electrical grid potential to the at least one grid electrode to enable the flow of electrons, at least the second electrical grid potential being provided by the focusing unit.
Claims28
A method for controlling an X-ray tube including at least one grid electrode, the at least one grid electrode being arranged between an anode electrode and a cathode electrode, and the method comprising:
- focusing, via a focusing unit, a flow of electrons from the cathode electrode to the anode electrode;
- applying, via a switching unit, a first electrical grid potential to the at least one grid electrode in a first switching state to pinch off the flow of electrons between the anode electrode and the cathode electrode;
- and
- applying a second electrical grid potential to the at least one grid electrode in a second switching state to enable the flow of electrons, at least the second electrical grid potential being provided by the focusing unit.
A circuit arrangement for controlling an X-ray tube, the X-ray tube including at least one grid electrode arranged between an anode electrode and a cathode electrode, and the circuit arrangement comprising:
- a focusing unit to focus a flow of electrons from the cathode electrode to the anode electrode;
- and
- a switching unit to
- apply a first electrical grid potential to the at least one grid electrode in a first switching state for pinching off the flow of electrons between the anode electrode and the cathode electrode,
- apply a second electrical grid potential in a second switching state for enabling the flow of electrons,
- the switching unit and the focusing unit being connected in series.
Dependencies are inferred from the claim text.