TECHNICAL FIELD

The present disclosure relates to the field of medical appliance technologies, and more particularly, to a radiation therapy device and system.

BACKGROUND

Radiation therapy has become one of main means for treatment of malignant tumors. According to types of radioactive rays, mainstream radioactive rays include γ-ray radiation therapy devices and X-ray radiation therapy devices.

In the actual radiation therapy processes, no matter what type of radiation therapy devices are used, doctors usually hope that dose rates at tumor target regions are as high as possible. This is because the higher the dose rates at the tumor target regions are, the more successfully DNA chains of tumor cells can be destroyed, and the better the therapeutic effects are. The dose rates refer to doses applied to the tumor target regions in unit time.

SUMMARY

Embodiments of the present disclosure provide a radiation therapy device, which includes a first treatment head and a second treatment head. A beam emitted from the second treatment head intersects with a beam emitted from the first treatment head at an intersection point. The first treatment head is an X-ray treatment head configured to generate a single narrow X-ray beam, and the second treatment head is an X-ray treatment head, a multi-source focusing treatment head, or an intensity-modulated treatment head.

In an embodiment, the X-ray treatment head includes a channel collimator configured to limit a beam. The channel collimator includes a plurality of beam channels, and any two of the beam channels are different in at least one of aperture size and shape. Alternatively, the channel collimator includes a single beam channel, and the single beam channel is adjustable in at least one of shape and size.

In an embodiment, the X-ray treatment head further includes an accelerator configured to emit the beam.

In an embodiment, the X-ray treatment head further includes a multi-leaf collimator configured to conform the beam, and the multi-leaf collimator is connected to the channel collimator. The channel collimator is configured to limit the beam conformed by the multi-leaf collimator.

In an embodiment, the channel collimator is detachably connected to the multi-leaf collimator.

In an embodiment, the channel collimator is movable with respect to the multi-leaf collimator.

In an embodiment, at least one of the first treatment head and the second treatment head is arranged on a rotating gantry.

In an embodiment, at least one of the first treatment head and the second treatment head is reciprocally rotatable around a rotation axis of a rotating gantry or continuously rotatable through 360 degrees around the rotation axis of the rotating gantry.

In an embodiment, at least one of the first treatment head and the second treatment head is axially movable or swingable around the rotation axis of the rotating gantry.

In an embodiment, a radial angle formed between a beam centerline of the first treatment head and a beam centerline of the second treatment head is less than or equal to 180 degrees. The radial angle is an angle formed between an orthographic projection of the beam centerline of the first treatment head on a first section and an orthographic projection of the beam centerline of the second treatment head on the first section, and the first section is a section perpendicular to the rotation axis.

In an embodiment, an axial angle formed between a beam centerline of the first treatment head and a beam centerline of the second treatment head is less than or equal to 90 degrees. The axial angle is an angle formed between an orthographic projection of the beam centerline of the first treatment head on a second section and an orthographic projection of the beam centerline of the second treatment head on the second section, and the second section is a section parallel to or passing through the rotation axis.

In an embodiment, the radiation therapy device further includes a third treatment head. A beam emitted from the third treatment head intersects with the beam emitted from the first treatment head and the beam emitted from the second treatment head at the intersection point. The third treatment head is an X-ray treatment head, a multi-source focusing treatment head, or an intensity-modulated treatment head.

In an embodiment, the second treatment head is an X-ray treatment head, and the third treatment head is an X-ray treatment head.

In an embodiment, at least one of the first treatment head, the second treatment head and the third treatment head is arranged on the rotating gantry.

In an embodiment, at least one of the first treatment head, the second treatment head and the third treatment head is axially movable or swingable along the rotation axis of the rotating gantry.

In an embodiment, the first treatment head, the second treatment head and the third treatment head are arranged on a fixing apparatus, and the fixing apparatus is connected to the rotating gantry.

In an embodiment, a radial angle formed between two adjacent treatment heads ranges from 5 degrees to 45 degrees. The radial angle is an angle formed between orthographic projections of beam centerlines of the two adjacent treatment heads on a first section, and the first section is a section perpendicular to the rotation axis.

In an embodiment, the rotating gantry is a roller gantry or a C-shaped arm.

In an embodiment, the multi-source focusing treatment head emits an X-ray beam or a γ-ray beam, and the intensity-modulated treatment head emits an X-ray beam or a γ-ray beam.

The embodiments of the present disclosure provide a radiation therapy system, which includes a treatment couch and the aforementioned radiation therapy device.

