EP-4736772-A1 - IMAGING SYSTEM AND METHOD, RADIOTHERAPY SYSTEM, AND ELECTRONIC DEVICE

Abstract

Provided are an imaging system and method, a radiotherapy system, and an electronic device, belonging to the medical field of technologies. The imaging system of the present disclosure is configured to image a target object (1), and includes: a radiation source (2), configured to emit a beam (201) to the target object (1); a detector (3), arranged opposite to the radiation source (2); and a diagnosis and treatment couch (5), disposed between the radiation source (2) and the detector (3), fixed relative to the detector (3), and configured to bear and drive the target object (1) to move. During movement of the diagnosis and treatment couch (5), the beam (201) emitted by the radiation source (2) always partially or entirely overlaps with a target volume of the target object (1), and the beam (201) passing through the target volume of the target object (1) is receivable by the detector (3).

Inventors

• LIU, HAIFENG
• ZHANG, Zhongyuan
• LI, Jiuliang
• WANG, Zhongya
• ZHANG, Shenglin
• XU, QIUHAO

Assignees

• Our United Corporation

Dates

Publication Date

20260506

Application Date

20251030

Claims (15)

1. An imaging system, configured to image a target object (1), comprising: a radiation source (2), configured to emit a beam (201) to the target object (1); a detector (3), arranged opposite to the radiation source (2); and a diagnosis and treatment couch (5), disposed between the radiation source (2) and the detector (3), fixed relative to the detector (3), and configured to bear and drive the target object (1) to move; wherein during movement of the diagnosis and treatment couch (5), the beam (201) emitted by the radiation source (2) always partially or entirely overlaps with a target volume of the target object (1), and the beam (201) passing through the target volume of the target object (1) is receivable by the detector (3).
2. The imaging system according to claim 1, wherein a plurality of radiation sources (2) are provided.
3. The imaging system according to claim 2, wherein central axes of beams (201) of the plurality of radiation sources (2) intersect at an imaging point (4).
4. The imaging system according to claim 2, wherein the imaging system satisfies at least one of: angles between central axes of beams (201) of the plurality of radiation sources (2), and mounting positions, arrangement directions, and an excitation sequence of the plurality of radiation sources (2) are all adjustable; or the plurality of radiation sources (2) are arranged in a cranio-caudal direction of the target object (1).
5. The imaging system according to claim 1, wherein a straight-line distance between the detector (3) and the radiation source (2) is adjustable.
6. The imaging system according to claim 1, wherein the diagnosis and treatment couch (5) comprises a couch board (501) and a couch base (502), the couch board (501) being fixed on the couch base (502), wherein a position of the couch board (501) is fixed relative to a position of the detector (3).
7. The imaging system according to claim 6, wherein the imaging system satisfies at least one of: the detector (3) is disposed on the couch board (501); or the couch board (501) and the detector (3) are capable of reciprocating separately along an X axis, a Y axis, and a Z axis in an IEC coordinate system.
8. The imaging system according to claim 1, comprising: an imaging control processing device, capable of controlling, based on an imaging mode selected by a user, the imaging system as defined in any one of claims 1 to 7 to perform imaging; wherein the imaging mode comprises tomography, KV imaging, or CBCT imaging.
9. The imaging system according to claim 1, wherein the detector (3) is sized to be able to cover a part, wherein the target volume is located, of the target object (1).
10. A radiotherapy system, comprising: the imaging system as defined in any one of claims 1 to 9 and a radiotherapy device (6).
11. The radiotherapy system according to claim 10, wherein an overlapping volume between the beam (201) emitted by the radiation source (2) and the target volume of the target object (1) always partially or entirely overlaps with a treatment volume of the radiotherapy device (6).
12. The radiotherapy system according to claim 10, wherein during movement of the diagnosis and treatment couch (5) from a positioning reference point to a radiotherapy isocenter of the radiotherapy device (6), the imaging system monitors a position of the target volume of the target object (1), and an imaging point (4) of the imaging system moves along a connecting line between the positioning reference point and the radiotherapy isocenter; wherein the connecting line between the positioning reference point and the radiotherapy isocenter is parallel to an X axis, a Y axis, or a Z axis in an IEC coordinate system of the radiotherapy device (6).
13. An imaging method, applicable to the imaging system as defined in any one of claims 1 to 9 or the radiotherapy system as defined in any one of claims 10 to 12, wherein the method comprises: adjusting (801) the radiation source, to enable that, during the movement of the diagnosis and treatment couch, the beam emitted by the radiation source always partially or entirely overlaps with the target volume of the target object, and the beam passing through the target volume of the target object is receivable by the detector; and controlling (802) the detector to generate image data.
14. The imaging method according to claim 13, wherein a plurality of radiation sources are provided, and adjusting (801) the radiation source comprises at least one of: adjusting a number of the plurality of radiation sources; adjusting mounting positions of the plurality of radiation sources; adjusting arrangement directions of the plurality of radiation sources; adjusting an excitation sequence of the plurality of radiation sources; or adjusting angles between central axes of beams of the plurality of radiation sources.
15. An electronic device, comprising: a processor; and a memory, configured to store one or more instructions executable by the processor; wherein the processor, when executing the one or more instructions, is caused to perform the imaging method as defined in claim 13 or 14.

Description

TECHNICAL FIELD The present disclosure relates to the medical field, in particular to the field of target volume imaging technologies, and particularly to an imaging system and method, a radiotherapy system, and an electronic device. BACKGROUND OF THE INVENTION With the rapid development of computer and imaging technologies, image-guided therapy technologies are playing an increasingly important role in improving the accuracy of radiotherapy. These technologies improve the local control rate of tumors and reduce the irradiation dose to surrounding normal tissues, which in turn reduces damage to normal tissues. SUMMARY OF THE INVENTION The present disclosure provides an imaging system and method, a radiotherapy system, and an electronic device. In a first aspect, the present disclosure provides an imaging system. The imaging system is configured to image a target object, and the imaging system includes: a radiation source, configured to emit a beam to the target object;a detector, arranged opposite to the radiation source; anda diagnosis and treatment couch, disposed between the radiation source and the detector, fixed relative to the detector, and configured to bear and drive the target object to move;wherein during movement of the diagnosis and treatment couch, the beam emitted by the radiation source always partially or entirely overlaps with a target volume of the target object, and the beam passing through the target volume of the target object is receivable by the detector. In some embodiments, a plurality of radiation sources are provided. In some embodiments, central axes of the beams of the plurality of radiation sources intersect at an imaging point. In some embodiments, angles between central axes of the beams of the plurality of radiation sources, and mounting positions, arrangement directions, and an excitation sequence of the plurality of radiation sources are all adjustable. In some embodiments, the plurality of radiation sources are arranged in a cranio-caudal direction of the target object. In some embodiments, a straight-line distance between the detector and the radiation source is adjustable. In some embodiments, the diagnosis and treatment couch includes a couch board and a couch base, the couch board being fixed on the couch base, wherein a position of the couch board is fixed relative to a position of the detector. In some embodiments, the detector is disposed on the couch board. In some embodiments, the couch board and the detector are capable of reciprocating separately along an X axis, a Y axis, and a Z axis in an IEC coordinate system. In some embodiments, the imaging system further includes: an imaging control processing device, capable of controlling, based on an imaging mode selected by a user, the imaging system as described above to perform imaging. In some embodiments, the imaging mode includes tomography, KV imaging, or CBCT imaging. In some embodiments, the size of the detector is selectable according to actual situations. In some embodiments, the detector is sized to be able to cover a part, where the target volume is located, of the target object. In a second aspect, the present disclosure provides a radiotherapy system, including: the imaging system as described above; and a radiotherapy device. In some embodiments, an overlapping volume between the beam emitted by the radiation source and the target volume of the target object always partially or entirely overlaps with a treatment volume of the radiotherapy device. In some embodiments, during movement of the diagnosis and treatment couch from a positioning reference point to a radiotherapy isocenter of the radiotherapy device, the imaging system monitors a position of the target volume of the target object, and an imaging point of the imaging system moves along a connecting line between the positioning reference point and the radiotherapy isocenter; wherein the connecting line between the positioning reference point and the radiotherapy isocenter is parallel to an X axis, a Y axis, or a Z axis in an IEC coordinate system of the radiotherapy device. In a third aspect, the present disclosure provides an imaging method, applicable to the imaging system as described above, and the method including: adjusting the radiation source, to enable that, during movement of the diagnosis and treatment couch, the beam emitted by the radiation source always partially or entirely overlaps with a target volume of the target object, and the beam passing through the target volume of the target object is receivable by the detector; and controlling the detector to generate image data. In some embodiments, a plurality of radiation sources are provided, and adjusting the radiation source includes at least one of: adjusting a number of the plurality of radiation sources;adjusting mounting positions of the plurality of radiation sources;adjusting arrangement directions of the plurality of radiation sources;adjusting an excitation sequence of the