X-ray device

Abstract

An X-ray device having an X-ray source, a high voltage generator supplying power to the X-ray tube and an inverter to generate, at the output end, an AC input voltage for the high voltage generator is disclosed. Provision is made therein for a resonance network to be formed between the inverter and the high voltage generator. This allows transmission of the AC input voltage with low power dissipation and low radiation levels. It also achieves spatial separation of the inverter from the high voltage generator and the X-ray source.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention are explained in more detail by way of a drawing. The drawing shows:

FIG. 1 diagrammatically, in an X-ray device, the energy supply for an X-ray source, wherein a resonance network is formed between an inverter and a high voltage generator and

FIG. 2 an equivalent circuit diagram for the X-ray device shown in FIG. 1.

Claims

1. An X-ray device used in a medical procedure, comprising: an X-ray source;a high voltage generator connected to the X-ray source that supplies power to the X-ray source;an inverter that generates an AC input voltage for the high voltage generator; anda resonance network that connects the inverter and the high voltage generator.

2. The X-ray device as claimed in claim 1, wherein the resonance network is a multiresonance network.

3. The X-ray device as claimed in claim 1, wherein the resonance network comprises an isolating transformer for potential isolation.

4. The X-ray device as claimed in claim 3, wherein the isolating transformer comprises a transformation ratio to minimize a transmission loss.

5. The X-ray device as claimed in claim 3, wherein the isolating transformer comprises an output that is balanced to ground.

6. The X-ray device as claimed in claim 5, wherein the isolating transformer comprises a grounded potential plate.

7. The X-ray device as claimed in claim 1, wherein the resonance network comprises an ancillary circuit.

8. The X-ray device as claimed in claim 7, wherein the ancillary circuit comprises a capacitor.

9. The X-ray device as claimed in claim 8, wherein the capacitor forms an oscillating circuit.

10. The X-ray device as claimed in claim 9, wherein the oscillating circuit is a resonant circuit.

11. The X-ray device as claimed in claim 8, wherein the capacitor is selected in such a way that a resonance frequency of the resonance network is consistent with an output frequency of the inverter in an operating point for a maximum power output.

12. The X-ray device as claimed in claim 7, wherein the ancillary circuit comprises an inductance.

13. The X-ray device as claimed in claim 12, wherein the inductance is disposed in such a way that a resonance frequency of the resonance network is consistent with an output frequency of the inverter in an operating point for a maximum power output.

14. The X-ray device as claimed in claim 1, wherein the resonance network comprises a screened transmission line that transmits the AC input voltage.

15. The X-ray device as claimed in claim 1, wherein the AC input voltage is transmitted to the high voltage generator by a slip ring.

16. The X-ray device as claimed in claim 1, wherein the AC input voltage is transmitted to the high voltage generator by an inductance coupling.

17. The X-ray device as claimed in claim 1, wherein the X-ray device is used in a computer tomography scanner.

18. A method for supplying power to an X-ray source of an X-ray device used in a medical procedure, comprising: generating an AC input voltage by an inverter;connecting the inverter to a high voltage generator by a resonance network;transmitting the AC input voltage to the high voltage generator by the resonance network;connecting the high voltage generator to the X-ray source; andsupplying power generated by the high voltage generator to the X-ray source.