Radiation therapy device

1. A radiation therapy device comprising:

a rotatable holder;

an overhanging arm, from which a therapeutic treatment beam is operable to be directed onto an object to be irradiated, the overhanging arm being attached to the rotatable holder so that the overhanging arm is operable to be rotated about an isocenter, such that the therapeutic treatment beam is operable to be directed from different angles onto the isocenter;

a holder ring that is arranged concentrically in a plane of rotation of the radiation therapy device, the holder ring being connected to the overhanging arm;

an x-ray source for emitting diagnostic x-rays; and

an x-ray detector of the diagnostic x-rays,

wherein the x-ray source and the x-ray detector are operable to be moved along the holder ring so that a diagnostic x-ray image of an object to be irradiated is produced from a settable direction, and

wherein the x-ray source and the x-ray detector are operable to be moved independently of one another.

2. The x-ray therapy device as claimed in claim 1 , further comprising a controller for controlling a position of the x-ray detector, the controller being configured such that in a first mode, the x-ray detector is arranged opposite the overhanging arm for recording an image of the object to be irradiated that is produced with the therapeutic treatment beam, and in a second mode, the x-ray detector is positioned opposite the x-ray source for recording an image of the object to be irradiated that is produced with the diagnostic x-rays.

3. The radiation therapy device as claimed in claim 2 , further comprising:

another x-ray source for emitting diagnostic x-rays; and

another x-ray detector of the diagnostic x-rays,

wherein the other x-ray source and the other x-ray detector are operable to be moved along the holder ring.

4. The radiation therapy device as claimed in claim 2 , wherein the combination of a rotation of the rotatable holder and a movement of the x-ray source and the x-ray detector along the holder ring is operable to produce an image chain with fluoroscopic images of different orientations, from which a three-dimensional image of the object to be irradiated is produced.

5. The radiation therapy device as claimed in claim 2 , wherein the holder ring is operable to be moved towards the rotatable holder in a direction of an axis of rotation into a park position.

6. The radiation therapy device as claimed in claim 1 , further comprising:

another x-ray source for emitting diagnostic x-rays; and

another x-ray detector of the diagnostic x-rays,

wherein the other x-ray source and the other x-ray detector are operable to be moved along the holder ring.

7. The radiation therapy device as claimed in claim 6 , wherein the x-ray source and the x-ray detector, and the other x-ray source and the other x-ray detector, respectively, are operable to produce fluoroscopic images from different directions, from which a stereoscopic image is created.

8. The radiation therapy device as claimed in claim 7 , wherein the holder ring is operable to be moved towards the rotatable holder in a direction of an axis of rotation into a park position.

9. The radiation therapy device as claimed in claim 6 , wherein the combination of a rotation of the rotatable holder and a movement of the x-ray source and the x-ray detector along the holder ring is operable to produce an image chain with fluoroscopic images of different orientations, from which a three-dimensional image of the object to be irradiated is produced.

10. The radiation therapy device as claimed in claim 1 , wherein the combination of a rotation of the rotatable holder and a movement of the x-ray source and the x-ray detector along the holder ring is operable to produce an image chain with fluoroscopic images of different orientations, from which a three-dimensional image of the object to be irradiated is produced.

11. The radiation therapy device as claimed in claim 10 , wherein the rotatable holder comprises a central cylindrical opening, in which the object to be irradiated is at least partly positioned.

12. The radiation therapy device as claimed in claim 1 , wherein the holder ring is operable to be moved towards the rotatable holder in a direction of an axis of rotation into a park position.

13. The radiation therapy device as claimed in claim 12 , wherein the x-ray source and the x-ray detector are operable to be activated while the holder ring is being moved from the park position at the rotatable holder into an operating position.

14. The radiation therapy device as claimed in claim 12 , wherein the rotatable holder comprises a central cylindrical opening, in which the object to be irradiated is at least partly positioned.

15. The radiation therapy device as claimed in claim 1 , wherein the rotatable holder comprises a central cylindrical opening, in which the object to be irradiated is at least partly positioned.

16. A radiation therapy device comprising:

a rotatable holder;

an overhanging arm, from which a therapeutic treatment beam is operable to be directed onto an object to be irradiated, the overhanging arm being attached to the rotatable holder so that the overhanging arm is operable to be rotated about an isocenter, such that the therapeutic treatment beam is operable to be directed from different angles onto the isocenter;

a holder ring that is arranged concentrically in a plane of rotation of the radiation therapy device, the holder ring being connected to the overhanging arm;

an x-ray source for emitting diagnostic x-rays;

an x-ray detector of the diagnostic x-rays; and

a controller for controlling a position of the x-ray detector;

wherein the x-ray source and the x-ray detector are operable to be moved along the holder ring so that a diagnostic x-ray image of an object to be irradiated is produced from a settable direction, and

wherein the controller is configured such that in a first mode, the x-ray detector is arranged opposite the overhanging arm for recording an image of the object to be irradiated that is produced with the therapeutic treatment beam, and in a second mode, the x-ray detector is positioned opposite the x-ray source for recording an image of the object to be irradiated that is produced with diagnostic x-rays.

17. The radiation therapy device as claimed in claim 16 , further comprising:

another x-ray source for emitting diagnostic x-rays; and

another x-ray detector of the diagnostic x-rays,

wherein the other x-ray source and the other x-ray detector are operable to be moved along the holder ring.

18. The radiation therapy device as claimed in claim 16 , wherein the combination of a rotation of the rotatable holder and a movement of the x-ray source and the x-ray detector along the holder ring is operable to produce an image chain with fluoroscopic images of different orientations, from which a three-dimensional image of the object to be irradiated is produced.

19. The radiation therapy device as claimed in claim 16 , wherein the holder ring is operable to be moved towards the rotatable holder in a direction of an axis of rotation into a park position.

20. A radiation therapy device comprising:

a rotatable holder;

an overhanging arm, from which a therapeutic treatment beam is operable to be directed onto an object to be irradiated, the overhanging arm being attached to the rotatable holder so that the overhanging arm is operable to be rotated about an isocenter, such that the therapeutic treatment beam is operable to be directed from different angles onto the isocenter;

a holder ring that is arranged concentrically in a plane of rotation of the radiation therapy device, the holder ring being connected to the overhanging arm;

an x-ray source for emitting diagnostic x-rays; and

an x-ray detector of the diagnostic x-rays;

wherein the x-ray source and the x-ray detector are operable to be moved along the holder ring so that a diagnostic x-ray image of an object to be irradiated is produced from a settable direction, and

wherein the rotatable holder comprises a central cylindrical opening, in which the object to be irradiated is at least partly positioned.