WO2022141568A1 - 放疗系统 - Google Patents

放疗系统 Download PDF

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Publication number
WO2022141568A1
WO2022141568A1 PCT/CN2020/142497 CN2020142497W WO2022141568A1 WO 2022141568 A1 WO2022141568 A1 WO 2022141568A1 CN 2020142497 W CN2020142497 W CN 2020142497W WO 2022141568 A1 WO2022141568 A1 WO 2022141568A1
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Prior art keywords
treatment
imaging
radiation
area
patient
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PCT/CN2020/142497
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English (en)
French (fr)
Inventor
何冰
闫浩
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深圳市奥沃医学新技术发展有限公司
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Application filed by 深圳市奥沃医学新技术发展有限公司 filed Critical 深圳市奥沃医学新技术发展有限公司
Priority to CN202080108247.9A priority Critical patent/CN116744852A/zh
Priority to PCT/CN2020/142497 priority patent/WO2022141568A1/zh
Publication of WO2022141568A1 publication Critical patent/WO2022141568A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy

Definitions

  • the present application relates to the technical field of medical equipment, and in particular, to a radiotherapy system.
  • a radiotherapy system is a therapeutic device widely used in tumors and other diseases.
  • the radiotherapy system projects the radiation emitted by the radioactive source to the lesion area, so that the lesion area produces biological effects, so as to achieve the purpose of disease treatment.
  • Radiation includes alpha, beta, and gamma rays produced by radioisotopes and x-rays, electron rays, proton beams and other particle beams produced by various x-ray therapy machines or accelerators.
  • the body radiotherapy system using cobalt 60 as the radiation source when in use, places the patient on the treatment couch of the radiotherapy system, and the treatment couch carries the patient to the radiation irradiation area, so that the radiotherapy system can treat the patient's treatment.
  • the irradiation area is irradiated with radiation.
  • the embodiments of the present application provide a radiotherapy system to at least solve the problems in the related art.
  • An embodiment of the present application provides a radiotherapy system
  • the radiotherapy system includes: a gantry, a radiation source device and an imaging device; the radiation source device is arranged on the gantry; the radiation source device is used to irradiate a patient with radiation For treatment, the radiation source device is rotated between different working positions; the imaging device is used to image the part of the patient's body.
  • the centerline of the imaging beam of the imaging device is not coplanar with the centerline of the treatment beam of the radiation source device.
  • the radiation source device is turned over to form a first treatment mode and a second treatment mode, and when the radiation source device is in the first treatment mode, a first treatment area is formed; the radiation source device is in the first treatment mode. In the second treatment mode, a second treatment area is formed; the first treatment area and the second treatment area do not overlap.
  • a first treatment beam centerline is formed; when the radiation source device is in a second treatment mode, a second treatment beam centerline is formed; the first treatment beam centerline is formed. At least one of a treatment beam centerline and/or the second treatment beam centerline is non-coplanar with an imaging beam centerline of the imaging device.
  • the cross-section of the centerline of the first treatment beam and/or the centerline of the second treatment beam and the centerline of the imaging beam of the imaging device along the left-right direction of the patient are not coplanar.
  • the radiation source device when the radiation source device is in the first treatment mode, the radiation source device is used to treat the patient's head, and the imaging area of the imaging device at least partially overlaps the patient's head; or, the radiation source device When in the second treatment mode, for treating the patient's body, the imaging area of the imaging device at least partially overlaps the patient's body.
  • the imaging area of the imaging device covers the target volume of the patient.
  • the imaging area of the imaging device does not overlap or at least partially overlaps the treatment area of the radiation source device.
  • a first treatment area is formed, and the imaging area of the imaging device at least partially overlaps the first treatment area; or, the radiotherapy system is in a In the second treatment mode, a second treatment area is formed, and the imaging area of the imaging device at least partially overlaps the second treatment area.
  • the imaging equipment is installed on the rack; or, the imaging equipment is independently installed in the treatment room through a fixing device.
  • the imaging area of the imaging device is adjustable.
  • the imaging device includes a ray transmitting device and a ray receiving device, the radiation generated by the ray transmitting device is received by the ray receiving device; the ray transmitting device and/or the ray receiving device may be move and/or turn.
  • the radiation emitting device or the radiation receiving device is mounted on the frame and can move and/or rotate relative to the frame.
  • a guide rail is provided on the rack, and the ray transmitting device or the ray receiving device can move relative to the rack along the guide rail.
  • the radiation transmitting device or the radiation receiving device is fixed to the frame by a fixing mechanism, and the radiation transmitting device or the radiation receiving device moves and/or rotates relative to the fixing mechanism.
  • the fixing mechanism is movable and/or rotatable relative to the frame.
  • the radiation emitting device and/or the radiation receiving device moves in at least one of the direction of the patient's head and feet, the patient's left-right direction, and the patient's up-down direction.
  • the ray emitting device is arranged on the first rotating mechanism and can rotate around the first rotating shaft; and/or the ray receiving device is arranged on the second rotating mechanism, and can rotate around the second shaft.
  • the imaging beam centerline of the imaging device intersects the treatment beam centerline of the radiation source device.
  • the centerline of the imaging beam of the imaging device is perpendicular to the centerline of the treatment beam of the radiation source device.
  • the radiation emitting device and the radiation receiving device are located on both sides of the treatment area along the direction of the patient's head and feet.
  • the radiation emitting device in the direction of the patient's head and feet, is located on one side of the treatment area in the direction of the head, and the radiation receiving device is located on one side of the treatment area in the direction of the foot.
  • the radiation emitting device in the direction of the patient's head and feet, is located on one side of the treatment area in the direction of the foot, and the radiation receiving device is located on the side of the treatment area in the direction of the head.
  • the imaging device includes at least one radiation emitting device and at least one radiation receiving device.
  • the imaging device includes two ray emitting devices and two ray receiving devices, and the two ray emitting devices and the two ray receiving devices cross-imaging.
  • the intersection angle of the cross imaging is not 90°.
  • the imaging device is disposed on the radiation source device, and is rotated synchronously with the radiation source device, so as to image parts of the patient's body when the radiation source device is in different working positions.
  • the center of the beam emitted by the radiation generating device of the imaging equipment is projected on the radiation receiving device, which is deviated from the imaging center of the radiation receiving device.
  • the radiation source device can be converted between different working positions by turning over.
  • the radiotherapy system is then equipped with an imaging device.
  • the imaging device can be used to determine the positional relationship between the area to be irradiated of the patient and the treatment area of the radiotherapy system. Then, the positioning is performed according to the positional relationship, thereby ensuring higher positioning accuracy, further making the effect of radiation irradiation more ideal, and avoiding damage to other areas of the patient.
  • FIG. 1 is a front view of a radiotherapy system provided according to an embodiment of the present application.
  • FIG. 2 is a side view of a radiotherapy system provided according to an embodiment of the present application.
  • Words like "connected,” “connected,” “coupled,” and the like referred to in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
  • the “plurality” referred to in this application refers to two or more.
  • “And/or” describes the association relationship between associated objects, indicating that there can be three kinds of relationships. For example, “A and/or B” can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • the terms “first”, “second”, “third”, etc. involved in this application are only to distinguish similar objects, and do not represent a specific order for the objects.
  • an embodiment of the present application provides a radiotherapy system.
  • the radiotherapy system includes: a gantry 100 , a radiation source device 200 and an imaging device 300 ; the radiation source device 200 is arranged on the gantry 100 ; The device 200 is used to perform radiation therapy on a patient, and the radiation source device 200 is switched between different working positions by turning over, and different working positions correspond to various treatment modes.
  • two modes can be implemented, and the patient can be treated in different treatment modes.
  • the patient's head can be treated both before and after the inversion; or, the patient's body can be treated both before and after the inversion. Get treatment.
  • the embodiments of the present application illustrate by taking an example that the radiation source device is turned over to form a first treatment mode and a second treatment mode.
  • the first treatment mode is a head treatment mode
  • the second treatment mode is a body treatment mode.
  • Imaging device 300 is used to image parts of a patient's body.
  • the gantry 100 is used to carry the radiation source device 200, which may be a frame-shaped gantry, a semicircular gantry, etc.
  • the shape and structure of the gantry 100 are not limited in this application. , the description and drawings take the frame-type rack as an example to illustrate.
  • the frame 100 of the radiotherapy system is a frame frame, and the frame frame includes at least four uprights and two beams. One end of the four uprights is fixed to the ground or to the base of the radiotherapy system, the positions of the four uprights form a rectangle, and the tops of the two uprights that form the short sides of the rectangle are provided with beams.
  • the radiation source device 200 of the present application is used to emit radiation rays to perform radiation therapy on a patient.
  • the radiation can be gamma rays, X-rays, electron beams, proton beams and other particle beams.
  • the present application describes the structure and radiation of the radiation source device 200 The type is not limited, and the description and embodiments take a gamma knife for emitting gamma rays as an example for illustration.
  • Gamma Knife is the main treatment method of stereotactic radiosurgery.
  • the diseased tissue in the body is determined as the target point, and cobalt 60 is used as the radioactive source to generate gamma rays.
  • Dose-focused irradiation makes the cells of the diseased tissue necrotic, so as to achieve the purpose of treatment.
  • Gamma Knife is divided into Body Gamma Knife and Head Gamma Knife.
  • Body Gamma Knife is a Gamma Knife device aimed at patients' body lesions
  • Head Gamma Knife is a Gamma Knife device aimed at patients' head lesions. equipment. That is, the current Gamma Knife device can only target the head or body alone.
  • the embodiment of the present application provides a radiotherapy system.
  • the radiotherapy system can not only meet the treatment needs of the head, but also meet the treatment needs of the body.
  • the radiation source device 200 is installed on the rack 100, and the radiation source device 200 further includes a turning mechanism, and the radiation source device 200 is turned over by the turning mechanism to realize the rotation between different working positions, and different working positions correspond to more a mode of treatment.
  • the embodiments of the present application illustrate by taking an example that the radiation source device is turned over to form a first treatment mode and a second treatment mode.
  • the first treatment mode is a head treatment mode
  • the second treatment mode is a body treatment mode.
  • the turning mechanism When the target area is on the patient's body, the turning mechanism turns the radiation source device 200 to a horizontal state, that is, the radiotherapy system is in the body treatment mode at this time, and the target area of the patient is subjected to radiation therapy; when the target area is on the patient's body When the head is turned over, the turning mechanism turns the radiation source device 200 to produce an inclination angle with the horizontal state, that is, the radiotherapy system is in the head treatment mode at this time, and the target area of the patient is subjected to radiation treatment.
  • the embodiment of the present application does not limit the position of the treatment center of the radiation source device 200 after the inversion, and the treatment centers before and after the inversion may or may not overlap.
  • the radiotherapy system provided by the embodiment of the present application further includes an imaging device 300, which can perform auxiliary positioning during the positioning stage; and can also perform real-time imaging during the treatment stage to assist in improving the treatment accuracy.
  • the imaging device 300 may be installed on the gantry 100, or may be installed in the treatment room through a fixing device, as long as the imaging beam of the imaging device 300 can reach a designated position.
  • the imaging device 300 may be an infrared imaging device, a visible light imaging device, an X-ray imaging device, a magnetic resonance imaging device, an ultrasonic imaging device, a nuclear medicine imaging device (PET, SPECT), and the like.
  • the fixing device may be a threaded screw, a clip, etc., through which the imaging device 300 is fixed on the wall of the treatment room, or may be fixed on the top surface or the bottom surface of the treatment room.
  • the fixing device can also be a bracket, through which the imaging device 300 is fixed around the rack 100 , and the bracket can be fixed with the rack 100 or fixed on the ground.
  • the patient Before the radiotherapy system is used, the patient is lying on the treatment couch 400. After the image of the patient is collected by the imaging device 300, the patient can be positioned through the collected image to ensure that the target of the patient is aligned with the isocenter of the treatment of the radiotherapy system. allow.
  • the imaging device 300 can image the patient in real time, so as to determine the center position of the target and the treatment isocenter of the radiotherapy system in real time, so as to help improve the treatment accuracy.
  • the embodiment of the present application may further include a treatment couch, where the treatment couch is used to carry a patient.
  • the patient is moved to the treatment area for treatment by the movement of the treatment couch.
  • the patient is lying on the treatment couch and enters the treatment area with the head advanced.
  • the direction of the patient's head and feet is the Y direction of the radiotherapy system; the left and right directions of the patient are the X direction of the radiotherapy system; it is perpendicular to both the X and Y directions
  • the direction is the Z direction of the radiotherapy system.
  • the radiation source device 200 can be turned over to be in different working positions, and different working positions correspond to various treatment modes, so that the radiation source device 200 can be used in a variety of treatments. treatment in the mode.
  • the radiotherapy system is then equipped with an imaging device 300.
  • the imaging device 300 can be used to determine the positional relationship between the area to be irradiated of the patient and the treatment area of the radiotherapy system. Then, according to the positional relationship, the tumor can be placed or tracked during the treatment, so as to ensure the accuracy of the treatment, further improve the effect of radiation irradiation, and avoid additional damage to other areas of the patient.
  • the centerline of the imaging beam of the imaging device 300 and the centerline of the treatment beam of the radiation source device 200 are not coplanar.
  • an X-ray imaging device includes two ray emitting devices 310 and two ray receiving devices 320 as an example.
  • the ray emitting device 310 emits cone-beam X-rays
  • the ray receiving device 320 receives a cone beam of X-rays passing through a patient's body to image the patient's body.
  • the beam center of the cone beam emitted by the ray emission device 310 is the imaging center line of the imaging device 300 .
  • the radiation source device 200 takes Cobalt 60 as an example of a radiation source.
  • the rays emitted by a plurality of Cobalt 60 sources are focused to form a focus center.
  • the rays emitted by the multiple cobalt 60 sources form a focused beam, and the centerline of the focused beam is the centerline of the treatment beam of the radiation source device 200 .
  • the imaging beam centerline is neither intersecting nor parallel to the treatment beam centerline.
  • the imaging beam centerline is non-coplanar with the treatment beam centerline over the entire spatial region.
  • the radiation source device is turned over to form a first treatment mode and a second treatment mode, and when the radiation source device 200 is in the first treatment mode, a first treatment area is formed; the radiation source device 200 is in the second treatment mode In the treatment mode, a second treatment area is formed; the first treatment area and the second treatment area may or may not overlap.
  • This embodiment of the present application uses the non-overlapping case as an example for illustration, and the overlapping case may refer to this embodiment.
  • the first treatment mode is a head treatment mode
  • the second treatment mode is a body treatment mode.
  • the radiation source device 200 realizes switching between the head treatment mode and the body treatment mode under the driving of the turning mechanism.
  • the rays emitted by the multiple cobalt 60 sources are focused in an area, which is the first treatment area O 2
  • the first treatment area O 2 may be a spherical area. It only needs to satisfy that the first treatment area O 2 can perform radiation therapy on the tumor area of the head.
  • the rays emitted by the multiple cobalt 60 sources are focused in an area, which is the second treatment area O 1 , and the second treatment area O 1 may be a spherical area.
  • the first treatment area O 2 of the head treatment mode and the second treatment area O 1 of the body treatment mode do not overlap each other.
  • the first treatment beam centerline when the radiation source device 200 is in the first treatment mode, the first treatment beam centerline is formed; when the radiation source device 200 is in the second treatment mode, the second treatment beam centerline is formed; the first treatment beam centerline At least one of the line and/or the second treatment beam centerline is non-coplanar with the imaging beam centerline of the imaging device 300 .
  • the first treatment mode is a head treatment mode
  • the second treatment mode is a body treatment mode.
  • the rays emitted by the multiple cobalt 60 sources form a first treatment beam
  • the first treatment beam is focused in one area
  • the center line of the optical path formed by the first treatment beam is the first treatment beam.
  • a treatment beam centerline When the radiation source device 200 is in the body treatment mode, the rays emitted by the multiple cobalt 60 sources form a second treatment beam, the second treatment beam is focused in one area, and the center line of the optical path formed by the second treatment beam is the first treatment beam.
  • Two treatment beam centerline are two treatment beam centerline.
  • the centerline of the first treatment beam and the centerline of the imaging beam of the imaging device 300 do not intersect nor parallel, and the centerline of the imaging beam and the centerline of the first treatment beam are not common in the entire spatial area noodle.
  • the centerline of the second treatment beam and the centerline of the imaging beam of the imaging device 300 ie, neither intersect nor parallel, and the centerline of the imaging beam and the centerline of the second treatment beam are not coplanar in the entire spatial region.
  • the centerline of the first treatment beam and the centerline of the second treatment beam are both, neither intersecting nor parallel to the centerline of the imaging beam of the imaging device 300 , and both the centerline of the imaging beam and the first The centerline of the treatment beam and the centerline of the second treatment beam are non-coplanar.
  • the XZ plane K 2 passing through the first treatment region, the XZ plane K 1 passing through the second treatment region, and the XZ plane K 3 passing through the centerline of the imaging beam are not the same flat.
  • the centerline of the first treatment beam and/or the centerline of the second treatment beam is not coplanar with the cross-section of the centerline of the imaging beam of the imaging device 300 along the left-right direction of the patient.
  • the centerline of the first treatment beam forms a cross-section of the first treatment beam, ie, a first plane, in the left-right direction of the patient.
  • the centerline of the second treatment beam forms a cross-section of the second treatment beam in the left-right direction of the patient, that is, the second plane.
  • the centerline of the imaging beam of the imaging device 300 forms a transverse section of the imaging beam in the left-right direction of the patient, that is, the third plane.
  • the first plane and the third plane are not coplanar.
  • the second plane is non-coplanar with the third plane.
  • both the first plane and the second plane are non-coplanar with the third plane.
  • the imaging area of the imaging device 300 when the radiation source device 200 is in the first treatment mode, for treating the patient's head, the imaging area of the imaging device 300 at least partially overlaps the patient's head; or, when the radiation source device 200 is in the second treatment mode In the treatment mode, for the treatment of the body of the patient, the imaging area of the imaging device 300 at least partially overlaps the body of the patient.
  • the first treatment mode is a head treatment mode, and the first treatment mode is used to treat the patient's head;
  • the second treatment mode is a body treatment mode, and the second treatment mode is used for Treat the patient's body.
  • the imaging area formed by the imaging beam generated by the imaging device 300 covers at least a partial area of the patient's head.
  • the imaging area of the imaging device 300 covers the entire head of the patient.
  • the imaging area of the imaging device 300 can also cover a part of the patient's head to generate at least a partial image of the patient's head, so as to assist the positioning during the positioning stage, and also perform real-time positioning during the treatment stage.
  • the imaging area formed by the imaging beam generated by the imaging device 300 covers at least a partial area of the patient's body.
  • the imaging area of the imaging device 300 can also cover a part of the patient's body, generate at least a partial image of the patient's body, and then assist the positioning during the positioning stage, and can also perform real-time positioning during the treatment stage.
  • the generated partial image of the patient may or may not cover the target area.
  • the imaging area of the imaging device 300 covers the target volume of the patient.
  • the target volume is the solid tumor area, that is, the tumor area that can be observed by imaging equipment;
  • the clinical target volume (CTV) is the increase of subclinical lesions on the basis of the solid tumor volume (GTV).
  • the target volume (PTV) is a safety margin added to the clinical target volume (CTV).
  • the target volume described in this embodiment can be any of a solid tumor volume (GTV), a clinical target volume (CTV), and a planned target volume (PTV), as long as the solid tumor is included.
  • the imaging area of the imaging device 300 does not overlap or at least partially overlaps the treatment area of the radiation source device 200 .
  • the positional relationship between the imaging area and the treatment area needs to be predetermined.
  • the imaging device 300 needs to be used for positioning, firstly, the patient is moved to the imaging area by the treatment couch 400, the target position is determined in the imaging area, and then according to the positional relationship between the imaging area and the treatment area, the target is moved by the treatment couch 400. Move the point position to the treatment area to complete the setup.
  • the imaging area of the imaging device 300 completely overlaps with the treatment area of the radiation source device 200, when the imaging device 300 needs to be used for positioning, the patient is first moved to the imaging area, that is, the treatment area, by the treatment couch 400, and the imaging device 300 is placed in the treatment area.
  • the imaging device 300 may also be used for real-time positioning during the treatment stage.
  • the imaging area of the imaging device 300 when the imaging area of the imaging device 300 does not overlap with the treatment area of the radiation source device 200, the imaging area O 3 of the imaging device 300; when the radiation source device 200 is in the head treatment mode, The first treatment area O 2 formed; the second treatment area O 1 formed when the radiation source device 200 is in the body treatment mode. That is to say, the imaging area O 3 will neither cover the first treatment area O 2 nor cover the second treatment area O 1 .
  • the radiation source device 200 when the radiation source device 200 is in the first treatment mode, a first treatment area is formed, and the imaging area of the imaging device 300 at least partially overlaps the first treatment area; or, the radiation source device 200 is in the second treatment mode When the second treatment area is formed, the imaging area of the imaging device 300 at least partially overlaps the second treatment area.
  • the first treatment mode is a head treatment mode
  • the second treatment mode is a body treatment mode.
  • the radiation source device 200 is in the head treatment mode
  • the rays emitted by the multiple cobalt 60 sources are focused in an area, which is the first treatment area.
  • the imaging area of the imaging device 300 partially overlaps the first treatment area, the positional relationship between the imaging area and the first treatment area needs to be predetermined.
  • the imaging device 300 needs to be used for positioning, firstly, the patient is moved to the imaging area through the treatment couch 400, the target position is determined in the imaging area, and then according to the positional relationship between the imaging area and the first treatment area, the patient is moved through the treatment couch 400 through the treatment couch 400. Move the target position to the first treatment area to complete the setup.
  • the imaging device 300 When the imaging area of the imaging device 300 completely overlaps the first treatment area, when the imaging device 300 needs to be used for positioning, the patient is first moved to the imaging area, that is, the first treatment area, through the imaging device 300 through the treatment couch 400 . Set up in the first treatment area.
  • the imaging device 300 may also perform real-time positioning during the treatment stage.
  • the rays emitted by the multiple cobalt 60 sources are focused in an area, which is the second treatment area.
  • the imaging area of the imaging device 300 partially overlaps the second treatment area, the positional relationship between the imaging area and the second treatment area needs to be predetermined.
  • the imaging equipment 300 needs to be used for positioning, firstly, the patient is moved to the imaging area by the treatment couch 400, the target position is determined in the imaging area, and then according to the positional relationship between the imaging area and the second treatment area, the patient is moved through the treatment couch 400. Move the target position to the second treatment area to complete the setup.
  • the imaging device 300 When the imaging area of the imaging device 300 completely overlaps with the second treatment area, when the imaging device 300 needs to be used for positioning, the patient is first moved to the imaging area, that is, the second treatment area, through the imaging device 300 through the treatment couch 400 . Set up in the second treatment area.
  • the imaging device 300 can also perform real-time positioning during the treatment stage.
  • the imaging area of the imaging device 300 is adjustable.
  • the imaging area of the imaging device 300 can be adjusted by moving or rotating.
  • the imaging device 300 is fixed on the gantry 100 through sliding rails or independently installed in the treatment room, and the imaging area of the imaging device 300 is adjusted by moving the imaging device 300 on the sliding rails.
  • the imaging device 300 can be fixed on the gantry 100 through a turntable with a rotating shaft or independently installed in the treatment room, and the imaging area of the imaging device 300 can be adjusted by rotating the imaging device 300 around the rotating shaft.
  • the imaging device 300 can be set on the turntable of the rotating shaft first, and then the turntable can be fixed on the rack 100 through sliding rails or installed independently in the treatment room, so that it can be moved or rotated.
  • the imaging device 300 includes a ray transmitting device 310 and a ray receiving device 320, the radiation generated by the ray transmitting device 310 is received by the ray receiving device 320; the ray transmitting device 310 and/or the ray receiving device 320 can move and/or or turn.
  • the ray emitting device 310 may be: a bulb, an accelerator, a radioisotope, etc.; the ray receiving device 320 may be any device that can receive rays, such as a detector.
  • the imaging device 300 is an X-ray imaging device
  • the ray emitting device 310 of the imaging device 300 can be a bulb
  • the ray receiving device 320 can be a detector.
  • the ray emitting device 310 can be moved; the ray emitting device 310 can also be rotated; the ray emitting device 310 can be moved or rotated.
  • the detector can move; the detector can also rotate; the detector can also move and rotate. It only needs to satisfy that the ray emitting device 310 and the ray receiving device 320 are opposite.
  • the way of moving and rotating can be realized by the way of the above-mentioned slide rail and turntable.
  • the radiation emitting device 310 or the radiation receiving device 320 is mounted on the gantry 100 and can move and/or rotate relative to the gantry 100 .
  • the radiation emitting device 310 is installed on the gantry 100, and the opposite radiation receiving device 320 can be installed on the gantry 100 or independently installed in the treatment room. It can be understood that the radiation receiving device 320 may be arranged on the gantry 100, and the radiation emitting device 310 opposite thereto may be installed on the gantry 100 or independently installed in the treatment room.
  • the ray emitting device 310 is installed on the gantry 100, movement or rotation or both movement and rotation can be realized on the gantry 100 by means of the above-mentioned sliding rails and turntables.
  • the ray receiving device 320 When the ray receiving device 320 is installed on the gantry 100, movement or rotation or both movement and rotation can also be realized on the gantry 100 by means of the above-mentioned sliding rails and turntables. It only needs to satisfy that the ray emitting device 310 and the ray receiving device 320 are opposite.
  • the rack 100 is provided with a guide rail, and the ray transmitting device 310 or the ray receiving device 320 can move relative to the rack 100 along the guide rail.
  • the frame 100 includes a column and a beam, and in order to better ensure the stability of the radiotherapy system, a fixed beam is provided between the two beams.
  • a sliding rail may be provided on the rack 100, and the ray transmitting device 310 or the ray receiving device 320 may be provided on the sliding rail, and move on the rack 100 through the sliding rail.
  • a sliding rail may also be provided on the rack 100, a slider is arranged on the sliding rail, and the ray transmitting device 310 or the ray receiving device 320 is fixed on the slider, and moves on the rack 100 through the slider.
  • the sliding rails can be arranged on the beam to ensure that the radiation emitting device 310 or the radiation receiving device 320 moves in the direction of the patient's head and feet;
  • the device 320 moves in the up and down direction of the patient;
  • the slide rail can also be arranged on the fixed beam to ensure that the radiation emitting device 310 or the radiation receiving device 320 moves in the left and right directions of the patient.
  • slide rails can also be provided on at least two of the column, the beam and the fixed beam, so that the ray transmitting device 310 or the ray receiving device 320 can move in two directions, or in three directions make a move.
  • the ray emitting device 310 may be separately arranged on the guide rail, and the ray receiving device 320 may be relatively fixed; the ray receiving device 320 may be separately arranged on the guide rail, and the ray emitting device 310 may be relatively fixed; or the ray emitting device 310 and the ray receiving device 320 are set on the guide rails. It only needs to satisfy that the ray emitting device 310 and the ray receiving device 320 are opposite.
  • the radiation transmitting device 310 or the radiation receiving device 320 is fixed to the frame 100 by a fixing mechanism, and the radiation transmitting device 310 or the radiation receiving device 320 moves and/or rotates relative to the fixing mechanism.
  • the fixing mechanism can be a fixing plate, the fixing plate can cover the column, the beam and the fixing beam, the fixing plate is provided with a sliding rail, and the ray emitting device 310 or the ray receiving device 320 can move on the fixing plate to ensure that the ray emitting device 310 And/or the radiation receiving device 320 moves in at least one direction of the patient's head-to-foot direction, the patient's left-right direction, and the patient's up-down direction.
  • the fixing plate may be a short plate with a length within a certain range, and is arranged on the beam, and a sliding rail is arranged on the fixing plate, and the ray emitting device 310 or the ray receiving device 320 moves on the sliding rail. It only needs to satisfy that the ray emitting device 310 and the ray receiving device 320 are opposite.
  • the ray emitting device 310 or the ray receiving device 320 is fixed on the fixed plate by a turntable with a rotating shaft, so that the ray emitting device 310 or the ray receiving device can rotate around the rotating shaft.
  • the securing mechanism can move and/or rotate relative to the frame 100 .
  • sliding rails may be provided on the rack 100 , and the fixing mechanism may be arranged on the sliding rails and move on the rack 100 through the sliding rails.
  • the slide rail can be set on the beam to ensure that the fixing mechanism moves in the direction of the patient's head and feet; the slide rail can also be set on the column to ensure that the fixing mechanism moves in the up and down direction of the patient; the slide rail can also be set on the fixed beam to ensure that the fixation mechanism moves in the left and right directions of the patient.
  • slide rails can also be provided on at least two of the upright column, the transverse beam and the fixed beam, so that the fixing mechanism can move in two directions, or move in three directions.
  • the fixing mechanism is fixed on the chute by a turntable with a rotating shaft, so that the fixing mechanism can rotate around the rotating shaft.
  • the ray emitting device 310 is disposed on the first rotating mechanism and can rotate around the first rotating shaft; and/or the ray receiving device 320 is disposed on the second rotating mechanism and can rotate around the second rotating shaft.
  • the first rotating mechanism includes a first rotating shaft
  • the ray emitting device 310 is disposed on the first rotating mechanism, and can rotate around the first rotating shaft
  • the first rotating mechanism can be disposed on the gantry 100
  • the first rotating mechanism can also be Independently fixed in the treatment room.
  • the second rotating mechanism includes a second rotating shaft
  • the ray receiving device 320 is disposed on the second rotating mechanism, and can rotate around the second rotating shaft
  • the second rotating mechanism can be disposed on the frame 100
  • the second rotating mechanism can also be independently fixed on Treatment room. It only needs to satisfy that the ray emitting device 310 and the ray receiving device 320 are opposite.
  • only the ray emitting device 310 can be arranged on the first rotating mechanism, and the opposite ray receiving device 320 cannot rotate; or only the ray receiving device 320 can be arranged on the second rotating mechanism, and the opposite ray receiving device 320 cannot rotate ;
  • the ray emitting device 310 can also be set on the first rotating mechanism, and the ray receiving device 320 can be set on the second rotating mechanism at the same time.
  • the imaging beam centerline of the imaging device 300 intersects the treatment beam centerline of the radiation source device 200 .
  • the radiation source device 200 when the radiation source device 200 is in the head treatment mode, the radiation source device 200 forms the first treatment beam centerline; when the radiation source device 200 is in the body treatment mode, the radiation source device 200 forms the second treatment beam centerline.
  • the centerline of the imaging beam of the imaging device 300 is perpendicular to the centerline of the treatment beam of the radiation source device 200 . That is, the centerline of the imaging beam of the imaging device 300 is parallel to the horizontal plane and perpendicular to the centerline of the treatment beam of the radiation source device 200, that is, perpendicular to the centerline of the first treatment beam; or perpendicular to the centerline of the second treatment beam; or respectively Perpendicular to the centerline of the first treatment beam and the centerline of the second treatment beam.
  • the radiation emitting device 310 and the radiation receiving device 320 are located on both sides of the treatment area along the direction of the patient's head and feet.
  • the first treatment area is formed.
  • the second treatment area is formed when the radiation source device 200 is in the body treatment mode.
  • the radiation emitting device 310 and the radiation receiving device 320 are on both sides of the first treatment area or the second treatment area.
  • the radiation emitting device 310 is located on one side of the treatment area in the direction of the head, and the radiation receiving device 320 is located on the side of the treatment area in the direction of the foot.
  • the radiation emitting device 310 is located on the foot direction side of the treatment area, and the radiation receiving device 320 is located on the head direction side of the treatment area.
  • the radiation emitting device 310 may be arranged in front of the treatment area, that is, the direction of the head, and the radiation receiving device 320 may be arranged at the back of the treatment area, that is, the direction of the feet; or the radiation emitting device 310
  • the radiation receiving device 320 is arranged in the back of the treatment area, that is, in the direction of the feet, and the radiation receiving device 320 is arranged in the front of the treatment area, that is, in the direction of the head. It is only necessary to ensure that when the patient is on the treatment couch 400, the radiation generated by the radiation emitting device 310 is received by the radiation receiving device 320 after passing through the patient.
  • the ray emitting device 310 can be arranged above the patient, and the ray receiving device 320 can be arranged below the patient; or the ray emitting device 310 can be arranged below the patient, and the ray receiving device 320 can be arranged at the bottom of the patient. above the patient.
  • the radiation emitting device 310 and the radiation receiving device 320 are located on both sides of the treatment area along the left and right directions of the patient.
  • the radiation emitting device 310 and the radiation receiving device 320 are disposed on the gantry 100 and on both sides of the patient in the left and right direction.
  • the ray emitting device 310 may be arranged on the left side, and the ray receiving device 320 may be arranged on the right side; or the ray emitting device 310 may be arranged on the right side, and the ray receiving device 320 may be arranged on the left side.
  • the imaging device 300 includes at least one radiation emitting device 310 and at least one radiation receiving device 320 .
  • the imaging apparatus 300 may include a set of ray emitting devices 310 and ray receiving devices 320 .
  • the imaging device 300 includes two ray emitting devices 310 and two ray receiving devices 320 .
  • the two radiation emitting devices 310 and the two radiation receiving devices 320 are respectively disposed opposite to each other.
  • the first ray emitting device is arranged opposite to the first ray receiving device; the second ray emitting device is arranged opposite to the second ray receiving device.
  • the first ray emitting device, the first ray receiving device, the second ray emitting device and the second ray receiving device may all be arranged behind the treatment area.
  • the first ray emitting device, the first ray receiving device, the second ray emitting device and the second ray receiving device may all be arranged in front of the treatment area.
  • the first ray emitting device may be arranged in front of the treatment area, the first ray receiving device may be arranged behind the treatment area, the second ray emitting device may be arranged in front of the treatment area, and the second ray receiving device may be arranged behind the treatment area. It is also possible that the first ray emitting device is arranged behind the treatment area, the first ray receiving device is arranged in front of the treatment area, the second ray emitting device is arranged behind the treatment area, and the second ray receiving device is arranged in front of the treatment area.
  • the first ray emitting device may be arranged in front of the treatment area, the first ray receiving device may be arranged behind the treatment area, the second ray emitting device may be arranged behind the treatment area, and the second ray receiving device may be arranged in front of the treatment area.
  • the first ray emitting device may be disposed behind the treatment area, the first ray receiving device may be disposed in front of the treatment area, the second ray emitting device may be disposed in front of the treatment area, and the second ray receiving device may be disposed behind the treatment area.
  • the left side of the treatment area is the left direction of the patient; the right side of the treatment area is the right direction of the patient.
  • the first ray emitting device can be arranged on the right side of the treatment area, the first ray receiving device can be arranged on the left side of the treatment area, the second ray emitting device can be arranged on the right side of the treatment area, and the second ray receiving device can be arranged on the right side of the treatment area. left.
  • the first ray emitting device is arranged on the left side of the treatment area, the first ray receiving device is arranged on the right side of the treatment area, the second ray emitting device is arranged on the left side of the treatment area, and the second ray receiving device is arranged in the treatment area. to the right. It is also possible that the first ray emitting device is arranged on the right side of the treatment area, the first ray receiving device is arranged on the left side of the treatment area, the second ray emitting device is arranged on the left side of the treatment area, and the second ray receiving device is arranged in the treatment area. to the right.
  • the first ray emitting device is arranged on the left side of the treatment area
  • the first ray receiving device is arranged on the right side of the treatment area
  • the second ray emitting device is arranged on the right side of the treatment area
  • the second ray receiving device is arranged in the treatment area. to the left.
  • the treatment area formed by the radiation source device 200 it is in the up-down direction of the patient.
  • Above the treatment area that is, the upper direction of the patient; below the treatment area, that is, the lower direction of the patient.
  • the first ray emitting device may be arranged above the treatment area, the first ray receiving device may be arranged below the treatment area, the second ray emitting device may be arranged above the treatment area, and the second ray receiving device may be arranged below the treatment area.
  • the first ray emitting device may be disposed below the treatment area, the first ray receiving device may be disposed above the treatment area, the second ray emitting device may be disposed below the treatment area, and the second ray receiving device may be disposed above the treatment area.
  • the first ray emitting device may be disposed above the treatment area, the first ray receiving device may be disposed below the treatment area, the second ray emitting device may be disposed below the treatment area, and the second ray receiving device may be disposed above the treatment area.
  • the first ray emitting device may be disposed below the treatment area, the first ray receiving device may be disposed above the treatment area, the second ray emitting device may be disposed above the treatment area, and the second ray receiving device may be disposed below the treatment area.
  • the settings in the above three directions can be freely combined, as long as the ray beams of the two groups of ray receiving devices 320 and ray emitting devices 310 intersect, and the intersecting area can cover the patient on the treatment couch 400 .
  • the imaging device 300 includes two ray emitting devices 310 and two ray receiving devices 320 , and the two ray emitting devices 310 and the two ray receiving devices 320 are crossed for imaging.
  • the intersection angle of the two imaging beams may be 90°, or the intersection angle may not be 90°.
  • the imaging device is arranged on the radiation source device, and is rotated synchronously with the radiation source device, so as to image parts of the patient's body when the radiation source device is in different working positions.
  • the imaging device may be arranged at the edge of the radiation source device, and when the radiation source device is turned over to be in different working positions, the imaging device can be synchronously turned over with the radiation source device. Before and after the inversion, the position of the imaging device relative to the radiation source device remains unchanged, the position of the imaging area of the imaging device relative to the radiation source device remains unchanged, and the position of the imaging area of the imaging device relative to the treatment area of the radiation source device remains unchanged.
  • the center of the beam emitted by the radiation generating device of the imaging equipment is projected on the radiation receiving device, which is deviated from the imaging center of the radiation receiving device.
  • the ray beam emitted by the imaging device is projected on the surface of the ray receiving device, and the point formed by the center line of the ray beam on the surface of the ray receiving device is not the same point as the center point of the ray receiving device. That is to say, the area where the radiation beam emitted by the imaging device is formed on the surface of the radiation receiving device is not the central area of the radiation receiving device.
  • the radiotherapy system provided by the embodiment of the present application can realize the head treatment mode and the body treatment mode at the same time, and by adding an imaging device, the imaging device is used to determine the positional relationship between the area to be irradiated of the patient and the radiation irradiation area of the radiotherapy system . Then, the positioning is performed according to the positional relationship, thereby ensuring higher positioning accuracy, further making the effect of radiation irradiation more ideal, and avoiding damage to other areas of the patient.
  • the imaging equipment can be used for real-time imaging, so as to ensure the positional accuracy of the target area and the radiation irradiation area, and the dose of the radiation beam can be detected in real time to ensure the effect of the treatment.

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Abstract

一种放疗系统，包括：机架（100）、射源装置（200）以及影像设备（300）；射源装置（200）设置于机架（100）上；射源装置（200）用于对患者进行射线照射治疗，射源装置（200）通过翻转在不同工作位之间进行转换；影像设备（300）用于对患者身体的部分进行成像。放疗系统可以使射源装置（200）处于不同工作位置，并且通过增加影像设备（300）能够保证摆位过程中的摆位精度更高，使射线照射的效果更加理想，避免对患者的其他区域造成损伤。在放疗系统进行治疗时，可以利用影像设备（300）进行实时成像，从而确保靶区和射线照射区域的位置精度，并且可以实时检测射线束的剂量，以确保治疗的效果。

Description

放疗系统 技术领域
本申请涉及医疗设备技术领域，特别是涉及一种放疗系统。
背景技术
放疗系统是一种广泛应用于肿瘤等疾病的治疗性设备。放疗系统将放射源发出的放射线投射于病灶区域，使得病灶区域产生生物学效应，从而达到疾病治疗的目的。放射线包括放射性同位素产生的α、β、γ射线和各类x射线治疗机或加速器产生的x射线、电子线、质子束及其他粒子束等。
目前的传统技术，以钴60为放射源的体部放疗系统，在使用时，将患者放置在放疗系统的治疗床上，并由治疗床承载患者至射线照射区域，以使放疗系统对患者的待照射区域进行射线照射。在将患者移动至射线照射区域时，患者的待照射区域与放疗系统的射线照射区域之间的位置关系，只能根据操作人员的经验进行确定。这就会造成，待照射区域与射线照射区域之间存在误差，进而导致射线照射的效果不理想，并且还会使射线照射至待照射区域之外的其他区域，对患者造成损伤。
发明内容
本申请实施例提供了一种放疗系统，以至少解决相关技术中的问题。
本申请实施例提供了一种放疗系统，所述放疗系统包括：机架、射源装置以及影像设备；所述射源装置设置于机架上；所述射源装置用于对患者进行射线照射治疗，所述射源装置通过在不同工作位之间进行转；所述影像设备用于对患者身体的部分进行成像。
在其中一个实施例中，所述影像设备的成像束中心线与射源装置的治疗束中心线非共面。
在其中一个实施例中，所述射源装置通过翻转形成第一治疗模式和第二治疗模式，且所述射源装置处于第一治疗模式时，形成第一治疗区域；所述射源装置处于第二治疗模式时，形成第二治疗区域；所述第一治疗区域与所述第二治疗区域不重叠。
在其中一个实施例中，所述射源装置处于第一治疗模式时，形成第一治疗束中心线；所述射源装置处于第二治疗模式时，形成第二治疗束中心线；所述 第一治疗束中心线和/或所述第二治疗束中心线中至少一个与所述影像设备的成像束中心线非共面。
在其中一个实施例中，所述第一治疗束中心线和/或所述第二治疗束中心线与所述影像设备的成像束中心线沿患者左右方向的横截面非共面。
在其中一个实施例中，所述射源装置处于第一治疗模式时，用于对患者头部进行治疗，所述影像设备的成像区域与患者头部至少部分重叠；或，所述射源装置处于第二治疗模式时，用于对患者体部进行治疗，所述影像设备的成像区域与患者体部至少部分重叠。
在其中一个实施例中，所述影像设备的成像区域覆盖所述患者的靶区。
在其中一个实施例中，所述影像设备的成像区域与所述射源装置的治疗区域不重叠或至少部分重叠。
在其中一个实施例中，所述射源装置处于第一治疗模式时，形成第一治疗区域，所述影像设备的成像区域与所述第一治疗区域至少部分重叠；或，所述放疗系统处于第二治疗模式时，形成第二治疗区域，所述影像设备的成像区域与所述第二治疗区域至少部分重叠。
在其中一个实施例中，所述影像设备安装在所述机架上；或者，所述影像设备通过固定装置独立安装在治疗室内。
在其中一个实施例中，所述影像设备的成像区域可调整。
在其中一个实施例中，所述影像设备包括射线发射装置以及射线接收装置，所述射线发射装置产生的射线被所述射线接收装置接收；所述射线发射装置和/或所述射线接收装置可移动和/或转动。
在其中一个实施例中，所述射线发射装置或所述射线接收装置安装在所述机架上，并可相对所述机架移动和/或转动。
在其中一个实施例中，所述机架上设置有导轨，所述射线发射装置或所述射线接收装置可沿所述导轨相对所述机架移动。
在其中一个实施例中，所述射线发射装置或所述射线接收装置通过固定机构与所述机架固定，所述射线发射装置或所述射线接收装置相对所述固定机构移动和/或转动。
在其中一个实施例中，所述固定机构可相对所述机架移动和/或转动。
在其中一个实施例中，所述射线发射装置和/或所述射线接收装置在患者头脚方向、患者左右方向、患者上下方向中的至少一个方向移动。
在其中一个实施例中，所述射线发射装置设置于所述第一转动机构上，且 能绕所述第一转轴旋转；和/或所述射线接收装置设置于所述第二转动机构上，且能绕所述第二转轴旋转。
在其中一个实施例中，所述影像设备的成像束中心线与所述射源装置的治疗束中心线相交。
在其中一个实施例中，所述影像设备的成像束中心线与所述射源装置的治疗束中心线垂直。
在其中一个实施例中，所述射线发射装置和所述射线接收装置沿患者头脚方向位于治疗区域的两侧。
在其中一个实施例中，在患者头脚方向，所述射线发射装置位于治疗区域头部方向一侧，所述射线接收装置位于治疗区域的脚部方向一侧。
在其中一个实施例中，在患者头脚方向，所述射线发射装置位于治疗区域脚部方向一侧，所述射线接收装置位于治疗区域的头部方向一侧。
在其中一个实施例中，所述影像设备包括至少一个射线发射装置以及至少一个射线接收装置。
在其中一个实施例中，所述影像设备包括两个射线发射装置以及两个射线接收装置，两个所述射线发射装置与两个所述射线接收装置交叉成像。
在其中一个实施例中，所述交叉成像的交叉角度不为90°。
在其中一个实施例中，所述影像设备设置于所述射源装置上，随所述射源装置同步翻转，以在所述射源装置处于不同工作位时，对患者身体的部分进行成像。
在其中一个实施例中，所述影像设备的射线发生装置发出的射束中心在所述射线接收装置的投影，偏离所述射线接收装置的成像中心。
相比于相关技术，本申请实施例提供的放疗系统，通过将射源装置设置在机架上，该射源装置能够通过翻转在不同工作位之间进行转换。再为放疗系统配备影像设备，在使用申请实施例的放疗系统时，可以利用影像设备确定患者的待照射区域与放疗系统的治疗区域之间的位置关系。再根据位置关系进行摆位，从而保证摆位精度更高，进一步的使射线照射的效果更加的理想，避免对患者的其他区域造成损伤。
本申请的一个或多个实施例的细节在以下附图和描述中提出，以使本申请的其他特征、目的和优点更加简明易懂。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据本申请实施例提供的放疗系统的正视图；
图2是根据本申请实施例提供的放疗系统的侧视图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行描述和说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。基于本申请提供的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
显而易见地，下面描述中的附图仅仅是本申请的一些示例或实施例，对于本领域的普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图将本申请应用于其他类似情景。此外，还可以理解的是，虽然这种开发过程中所作出的努力可能是复杂并且冗长的，然而对于与本申请公开的内容相关的本领域的普通技术人员而言，在本申请揭露的技术内容的基础上进行的一些设计，制造或者生产等变更只是常规的技术手段，不应当理解为本申请公开的内容不充分。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域普通技术人员显式地和隐式地理解的是，本申请所描述的实施例在不冲突的情况下，可以与其它实施例相结合。
除非另作定义，本申请所涉及的技术术语或者科学术语应当为本申请所属技术领域内具有一般技能的人士所理解的通常意义。本申请所涉及的“一”、“一个”、“一种”、“该”等类似词语并不表示数量限制，可表示单数或复数。本申请所涉及的术语“包括”、“包含”、“具有”以及它们任何变形，意图在于覆盖不排他的包含；例如包含了一系列步骤或模块(单元)的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可以还包括没有列出的步骤或单元，或可以还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。本申请所涉及的“连接”、“相连”、“耦接”等类似的词 语并非限定于物理的或者机械的连接，而是可以包括电气的连接，不管是直接的还是间接的。本申请所涉及的“多个”是指两个或两个以上。“和/或”描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。本申请所涉及的术语“第一”、“第二”、“第三”等仅仅是区别类似的对象，不代表针对对象的特定排序。
如图1-2所示，本申请实施例提供了一种放疗系统，该放疗系统包括：机架100、射源装置200以及影像设备300；射源装置200设置于机架100上；射源装置200用于对患者进行射线照射治疗，射源装置200通过翻转在不同工作位之间进行切换，不同的工作位对应多种治疗模式。示例的，可以是实现两种模式，对患者进行不同治疗模式下的治疗，示例的，翻转前和翻转后都可以对患者头部进行治疗；或，翻转前和翻转后都可以对患者体部进行治疗。本申请实施例以射源装置通过翻转形成第一治疗模式和第二治疗模式为例进行示例说明，第一治疗模式为头部治疗模式，第二治疗模式为体部治疗模式。影像设备300用于对患者身体的部分进行成像。
本发明实施例提供的一种放疗系统，机架100用于承载射源装置200，其可以是框型机架、半圆形机架等，本申请对于机架100的形状和结构不做限定，说明书及附图以框型机架为例进行示例说明。示例地，放疗系统的机架100为框形机架，该框形机架至少包括四根立柱以及两根横梁。四根立柱的一端固定于地面或者固定于放疗系统的基座，四根立柱所在位置构成一长方形，构成长方形短边的两根立柱顶端设置有横梁。
本申请射源装置200用于发出放射线射线以对患者进行射线照射治疗，射线可以是伽玛射线、X射线、电子线、质子束及其他粒子束，本申请对射源装置200的结构及射线类型不做限定，说明书及实施例以用于发出伽玛射线的伽玛刀为例进行示例说明。
伽玛刀是立体定向放射外科的主要治疗手段，是根据立体定向原理，将体内的病变组织确定为靶点，使用钴60作为放射源，产生伽玛射线，利用伽玛射线进行一次性的大剂量聚焦照射，使病变组织的细胞坏死，从而达到治疗的目的。
伽玛刀分为体部伽玛刀以及头部伽玛刀，顾名思义体部伽玛刀为针对患者体部病灶的伽玛刀设备；头部伽玛刀为针对患者头部病灶的伽玛刀设备。也就是目前的伽玛刀设备，只能单一的针对头部或体部。为了使一台伽玛刀设备能 够同时满足头部和体部的治疗需求，本申请实施例提供了一种放疗系统。该放疗系统既能够满足头部的治疗需求，还能够满足体部的治疗需求。
示例的，射源装置200安装在机架100上，射源装置200还包括翻转机构，通过翻转机构将射源装置200翻转，以实现在不同工作位之间进行转，不同的工作位对应多种治疗模式。本申请实施例以射源装置通过翻转形成第一治疗模式和第二治疗模式为例进行示例说明，第一治疗模式为头部治疗模式，第二治疗模式为体部治疗模式。当靶区在患者的体部时，翻转机构将射源装置200翻转至水平状态，也即此时放疗系统为体部治疗模式，对患者的靶区进行射线照射治疗；当靶区在患者的头部时，翻转机构将射源装置200翻转至与水平状态产生倾角，也即此时放疗系统为头部治疗模式，对患者的靶区进行射线照射治疗。本申请实施例对翻转后射源装置200的治疗中心位置不做限定，翻转前后治疗中心可以是重叠的，也可以是不重叠的。
本申请实施例提供的放疗系统，还包括影像设备300，该影像设备300能够在摆位阶段进行辅助摆位；还能够在治疗阶段进行实时成像，以辅助提高治疗精度。示例的，影像设备300可以安装在机架100上，也可以通过固定装置安装在治疗室内，只需保证影像设备300的成像束能够到达指定位置即可。其中，影像设备300可以是红外成像设备、可见光成像设备、X射线成像设备、磁共振设备、超声成像设备以及核医学成像设备(PET、SPECT)等。示例的，固定装置可以是螺纹螺钉、卡扣等，通过固定装置将影像设备300固定在治疗室的墙壁上，也可以固定在治疗室的顶面或者底面上。固定装置还可以是支架，通过支架将影像设备300固定在机架100的周围，支架可以与机架100固定，也可以固定在地面。当放疗系统使用之前，患者躺在治疗床400上，可以通过影像设备300采集患者图像之后，通过采集到的图像对患者进行摆位，以确保患者的靶点与放疗系统的治疗等中心点对准。当放疗系统对患者的靶点进行照射时，可以通过影像设备300实时的对患者进行成像，从而实时确定靶点与放疗系统的治疗等中心位置，以辅助提高治疗精度。
示例的，本申请实施例还可以包括治疗床，治疗床用于承载患者。通过治疗床的移动将患者移动至治疗区域进行治疗。其中，患者躺在治疗床上采用头先进的方式进入治疗区域，此时，患者的头脚方向为放疗系统的Y方向；患者的左右方向为放疗系统的X方向；与X方向和Y方向均垂直的方向为放疗系统的Z方向。
本申请实施例提供的放疗系统，通过将射源装置200设置在机架100上， 该射源装置200能够通过翻转处于不同工作位，不同的工作位对应多种治疗模式，以在多种治疗模式下进行治疗。再为放疗系统配备影像设备300，在使用申请实施例的放疗系统时，可以利用影像设备300确定患者的待照射区域与放疗系统的治疗区域之间的位置关系。再根据位置关系进行摆位或治疗过程中的肿瘤追踪，从而保证治疗精度，进一步的使射线照射的效果更加的理想，避免对患者的其他区域造成额外损伤。
在其中一个实施例中，影像设备300的成像束中心线与射源装置200的治疗束中心线非共面。
示例地，本申请实施例以影像设备300为X射线成像设备为例进行举例说明。示例的，本申请实施例及附图中，以X射线成像设备包括两个射线发射装置310以及两个射线接收装置320为例，示例的，该射线发射装置310发出锥形束的X射线，射线接收装置320接收穿过患者身体的锥形束的X射线，以对患者身体进行成像。本申请实施例中，射线发射装置310发出的锥形束的束流中心即为影像设备300的成像中心线。射源装置200以钴60为放射源为例，射源装置200在开启状态时，多个钴60源发出的射线聚焦后形成聚焦中心。多个钴60源发出的射线构成聚焦束，该聚焦束的中心线，即为射源装置200的治疗束中心线。成像束中心线与治疗束中心线既不相交也不平行。在整个空间区域内成像束中心线与治疗束中心线非共面。
在其中一个实施例中，所述射源装置通过翻转形成第一治疗模式和第二治疗模式，且射源装置200处于第一治疗模式时，形成第一治疗区域；射源装置200处于第二治疗模式时，形成第二治疗区域；第一治疗区域与第二治疗区域可以是重叠的，也可以是不重叠。本申请实施例以不重叠情况为例进行示例说明，重叠情况可以参考本实施例。
示例地，如图2所示，第一治疗模式为头部治疗模式，第二治疗模式为体部治疗模式。射源装置200在翻转机构的带动下实现头部治疗模式以及体部治疗模式的切换。在射源装置200处于头部治疗模式时，多个钴60源发出的射线聚焦在一个区域内，该区域即为第一治疗区域O 2，第一治疗区域O 2可以为类球状区域。只需满足第一治疗区域O 2能够对头部肿瘤区域进行照射治疗即可。在射源装置200处于体部模式时，多个钴60源发出的射线聚焦在一个区域内，该区域即为第二治疗区域O 1，第二治疗区域O 1可以为类球状区域。头部治疗模式的的第一治疗区域O 2和体部治疗模式的第二治疗区域O 1相互之间不重叠。
在其中一个实施例中，射源装置200处于第一治疗模式时，形成第一治疗 束中心线；射源装置200处于第二治疗模式时，形成第二治疗束中心线；第一治疗束中心线和/或第二治疗束中心线中至少一个与影像设备300的成像束中心线非共面。
示例地，第一治疗模式为头部治疗模式，第二治疗模式为体部治疗模式。在射源装置200处于头部治疗模式时，多个钴60源发出的射线形成第一治疗束，第一治疗束聚焦在一个区域内，该第一治疗束所形成光路的中心线即为第一治疗束中心线。在射源装置200处于体部治疗模式时，多个钴60源发出的射线形成第二治疗束，第二治疗束聚焦在一个区域内，该第二治疗束所形成光路的中心线即为第二治疗束中心线。在本实施例中，第一治疗束的中心线与影像设备300的成像束中心线，即不相交也不平行，既在整个空间区域内成像束中心线与第一治疗束的中心线非共面。或者，第二治疗束的中心线与影像设备300的成像束中心线，即不相交也不平行，既在整个空间区域内成像束中心线与第二治疗束的中心线非共面。或者，第一治疗束的中心线以及第二治疗束的中心线，均与影像设备300的成像束中心线，即不相交也不平行，既在整个空间区域内成像束中心线分别与第一治疗束的中心线以及第二治疗束的中心线非共面。
示例的，如图1-2所示，在放疗系统中，过第一治疗区域的XZ平面K 2、过第二治疗区域的XZ平面K 1以及过成像束中心线的XZ平面K 3不是同一平面。
在其中一个实施例中，第一治疗束中心线和/或第二治疗束中心线与影像设备300的成像束中心线沿患者左右方向的横截面非共面。
示例地，第一治疗束的中心线在患者的左右方向形成第一治疗束的横断面，也即第一平面。第二治疗束的中心线在患者的左右方向形成第二治疗束的横断面，也即第二平面。影像设备300的成像束中心线在患者的左右方向形成成像束的横断面，也即第三平面。在本实施例中，第一平面与第三平面非共面。或者，第二平面与第三平面非共面。或者，第一平面和第二平面均与第三平面非共面。
在其中一个实施例中，射源装置200处于第一治疗模式时，用于对患者头部进行治疗，影像设备300的成像区域与患者头部至少部分重叠；或，射源装置200处于第二治疗模式时，用于对患者体部进行治疗，影像设备300的成像区域与患者体部至少部分重叠。
示例地，如图1-2所示，第一治疗模式为头部治疗模式，第一治疗模式用于对患者头部进行治疗；第二治疗模式为体部治疗模式，第二治疗模式用于对患者体部进行治疗。在射源装置200处于头部治疗模式时，影像设备300的产 生的成像束形成的成像区域至少覆盖患者头部的部分区域。例如，影像设备300的成像区域覆患者的整个头部，通过对患者整个头部进行成像，进而在摆位阶段辅助摆位，也可以在治疗阶段进行实时定位。影像设备300的成像区域也可以覆盖患者头部的部分区域，生成患者的头部的至少部分图像，进而在摆位阶段辅助摆位，也可以在治疗阶段进行实时定位。在射线装置处于体部模式时，影像设备300的产生的成像束形成的成像区域至少覆盖患者体部的部分区域。例如，影像设备300的成像区域也可以覆盖患者体部的部分区域，生成患者的体部的至少部分图像，进而在摆位阶段辅助摆位，也可以在治疗阶段进行实时定位。需要说明的是，对于头部治疗或体部治疗模式下，生成的患者的部分图像，可以是覆盖靶区也可以不覆盖靶区。
在其中一个实施例中，影像设备300的成像区域覆盖患者的靶区。
示例地，在使用方式放疗系统进行放射性治疗之前，首先需要对患者进行靶区勾画。其中，在靶区勾画的时，至少会勾画出三个轮廓：实体肿瘤体积(GTV)、临床靶区体积(CTV)以及计划靶区体积(PTV)。其中，实体肿瘤体积(GTV)为实体肿瘤区域，也就是能够通过成像设备成像观察到的肿瘤区域；临床靶区体积(CTV)为在实体肿瘤体积(GTV)的基础上增加亚临床病灶；计划靶区体积(PTV)为在临床靶区体积(CTV)的基础上增加安全边界。本实施例中所描述的靶区可以为实体肿瘤体积(GTV)、临床靶区体积(CTV)以及计划靶区体积(PTV)中的任一个，只需包含实体肿瘤即可。
在其中一个实施例中，影像设备300的成像区域与射源装置200的治疗区域不重叠或至少部分重叠。
示例地，当影像设备300的成像区域与射源装置200的治疗区域不重叠或至少部分重叠时，需要预先确定成像区域与治疗区域之间的位置关系。在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，在成像区域确定靶点位置，再根据成像区域与治疗区域之间的位置关系，通过治疗床400将靶点位置移动至治疗区域，完成摆位。当影像设备300的成像区域与射源装置200的治疗区域完全重叠时，在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，也即治疗区域，通过影像设备300在治疗区域内进行摆位。当影像设备300的成像区域与射源装置200的治疗区域至少部分重叠时，还可以在治疗阶段，通过影像设备300进行实时定位。
示例的，如图1-2所示，当影像设备300的成像区域与射源装置200的治 疗区域不重叠时，影像设备300的成像区域O 3；射源装置200处于头部治疗模式时，形成的第一治疗区域O 2；射源装置200处于体部治疗模式时，形成的第二治疗区域O 1。也就是说，成像区域O 3，不会覆盖第一治疗区域O 2，也不会覆盖第二治疗区域O 1。
在其中一个实施例中，射源装置200处于第一治疗模式时，形成第一治疗区域，影像设备300的成像区域与第一治疗区域至少部分重叠；或，射源装置200处于第二治疗模式时，形成第二治疗区域，影像设备300的成像区域与第二治疗区域至少部分重叠。
示例地，第一治疗模式为头部治疗模式，第二治疗模式为体部治疗模式。在射源装置200处于头部治疗模式时，多个钴60源发出的射线聚焦在一个区域内，该区域即为第一治疗区域。当影像设备300的成像区域与第一治疗区域部分重叠时，需要预先确定成像区域与第一治疗区域之间的位置关系。在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，在成像区域确定靶点位置，再根据成像区域与第一治疗区域之间的位置关系，通过治疗床400将靶点位置移动至第一治疗区域，完成摆位。当影像设备300的成像区域与第一治疗区域完全重叠时，在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，也即第一治疗区域，通过影像设备300在第一治疗区域内进行摆位。当影像设备300的成像区域与第一治疗区域至少部分重叠时，还可以在治疗阶段，通过影像设备300进行实时定位。
在射源装置200处于体部模式时，多个钴60源发出的射线聚焦在一个区域内，该区域即为第二治疗区域。当影像设备300的成像区域与第二治疗区域部分重叠时，需要预先确定成像区域与第二治疗区域之间的位置关系。在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，在成像区域确定靶点位置，再根据成像区域与第二治疗区域之间的位置关系，通过治疗床400将靶点位置移动至第二治疗区域，完成摆位。当影像设备300的成像区域与第二治疗区域完全重叠时，在需要通过影像设备300进行摆位时，首先通过治疗床400将患者移动至成像区域，也即第二治疗区域，通过影像设备300在第二治疗区域内进行摆位。当影像设备300的成像区域与第二治疗区域至少部分重叠时，还可以在治疗阶段，通过影像设备300进行实时定位。
在其中一个实施例中，影像设备300的成像区域可调整。
示例地，可以通过移动或转动的方式，调整影像设备300的成像区域。例如，将影像设备300通过滑轨固定在机架100上或独立安装在治疗室内，通过 将影像设备300在滑轨上移动，从而调整影像设备300的成像区域。示例的，可以将影像设备300通过带有转轴的转台固定在机架100上或独立安装在治疗室内，通过将影像设备300绕转轴旋转，从而调整影像设备300的成像区域。示例的可以将影像设备300先设置在转轴的转台上，再将转台通过滑轨固定在机架100上或独立安装在治疗室内，这样即能够进行移动也能够进行转动。
在其中一个实施例中，影像设备300包括射线发射装置310以及射线接收装置320，射线发射装置310产生的射线被射线接收装置320接收；射线发射装置310和/或射线接收装置320可移动和/或转动。
示例地，其中射线发射装置310可以为：球管、加速器以及放射性同位素等；射线接收装置320可以是：探测器等能够接收射线的任意装置。当影像设备300为X射线成像设备时，影像设备300的射线发射装置310可以为球管，射线接收装置320可以为探测器。射线发射装置310产生的射线在穿过患者衰减之后，被探测器接收，根据探测器接收到的信号生成患者的图像。其中，射线发射装置310可以进行移动；射线发射装置310也可以进行转动；射线发射装置310即可以进行移动也可以进行转动。同时，探测器可以进行移动；探测器也可以进行转动；探测器还可以即进行移动又进行转动。只需满足射线发射装置310和射线接收装置320相对即可。移动和转动的方式可以通过上述滑轨和转台的方式实现。
在其中一个实施例中，射线发射装置310或射线接收装置320安装在机架100上，并可相对机架100移动和/或转动。
示例地，射线发射装置310安装在机架100上，与其相对的射线接收装置320既可以安装在机架100上也可以独立安装在治疗室内。可以理解的，射线接收装置320可以设置在机架100上，与其相对的射线发射装置310既可以安装在机架100上也可以独立安装在治疗室内。当射线发射装置310安装在机架100上时，可以通过上述滑轨和转台的方式在机架100上实现移动或者实现转动或者同时实现移动和转动。当射线接收装置320安装在机架100上时，也可以通过上述滑轨和转台的方式在机架100上实现移动或者实现转动或者同时实现移动和转动。只需满足射线发射装置310和射线接收装置320相对即可。
在其中一个实施例中，机架100上设置有导轨，射线发射装置310或射线接收装置320可沿导轨相对机架100移动。
示例地，机架100包括立柱以及横梁，为了更好保证放疗系统的稳定性，在两横梁之间设置有固定梁。本实施例中，在机架100上可以设置滑轨，射线 发射装置310或射线接收装置320可以设置在滑轨上，并通过滑轨在机架100上进行移动。也可以在机架100上设置滑轨，滑轨上设置滑块，射线发射装置310或射线接收装置320固定在滑块上，通过滑块在机架100上进行移动。可以理解的，滑轨可以设置在横梁上，以保证射线发射装置310或射线接收装置320在患者的头脚方向进行移动；滑轨也可以设置在立柱上，以保证射线发射装置310或射线接收装置320在患者上下方向进行移动；滑轨还可以设置在固定梁上，以保证射线发射装置310或射线接收装置320在患者的左右方向移动。可以理解的，也可以在立柱、横梁以及固定梁中的至少两个上设置滑轨，以使证射线发射装置310或射线接收装置320在两个方向上进行移动，或是在三个方向上进行移动。示例地，可以射线发射装置310单独设置在导轨上，射线接收装置320相对固定；可以射线接收装置320单独设置在导轨上，射线发射装置310相对固定；还可以射线发射装置310和射线接收装置320均设置在导轨上。只需满足射线发射装置310和射线接收装置320相对即可。
在其中一个实施例中，射线发射装置310或射线接收装置320通过固定机构与机架100固定，射线发射装置310或射线接收装置320相对固定机构移动和/或转动。
示例地，固定机构可以为固定板，固定板可以覆盖立柱、横梁以及固定梁，固定板上设置滑轨，射线发射装置310或射线接收装置320可以在固定板上移动，以保证射线发射装置310和/或射线接收装置320在患者头脚方向、患者左右方向、患者上下方向中的至少一个方向移动。也就是可以保证单独射线发射装置310在上述三个方向移动；也可以保证单独射线接收装置320在上述三个方向移动；还可以保证射线发射装置310和射线接收装置320均在上述三个方向移动。固定板可以是长度在一定范围内的短板，设置在横梁上，固定板上设置滑轨，射线发射装置310或射线接收装置320在滑轨上移动。只需满足射线发射装置310和射线接收装置320相对即可。示例地，射线发射装置310或射线接收装置320通过带有转轴的转台固定在固定板上，以使射线发射装置310或射线接收装能够绕转轴转动。
在其中一个实施例中，固定机构可相对机架100移动和/或转动。
示例地，当固定机构是长度在一定范围内的短板时，在机架100上可以设置滑轨，固定机构可以设置在滑轨上，并通过滑轨在机架100上进行移动。其中滑轨可以设置在横梁上，以保证固定机构在患者的头脚方向进行移动；滑轨也可以设置在立柱上，以保证固定机构在患者上下方向进行移动；滑轨还可以 设置在固定梁上，以保证固定机构在患者的左右方向移动。可以理解的，也可以在立柱、横梁以及固定梁中的至少两个上设置滑轨，以使固定机构在两个方向上进行移动，或是在三个方向上进行移动。示例地，固定机构通过带有转轴的转台固定在滑槽上，以使固定机构能够绕转轴转动。
在其中一个实施例中，射线发射装置310设置于第一转动机构上，且能绕第一转轴旋转；和/或射线接收装置320设置于第二转动机构上，且能绕第二转轴旋转。
示例地，第一转动机构包括第一转轴，射线发射装置310设置在第一转动机构上，并且可以绕第一转轴旋转，第一转动机构可以设置在机架100上，第一转动机构也可以独立固定在治疗室内。第二转动机构包括第二转轴，射线接收装置320设置在第二转动机构上，并且可以绕第二转轴旋转，第二转动机构可以设置在机架100上，第二转动机构也可以独立固定在治疗室内。只需满足射线发射装置310和射线接收装置320相对即可。其中，可以仅将射线发射装置310设置在第一转动机构上，相对的射线接收装置320不能旋转；也可以仅将射线接收装置320设置在第二转动机构上，相对的射线接收装置320不能旋转；还可以同时将射线发射装置310设置在第一转动机构上，将射线接收装置320设置在第二转动机构上。
在其中一个实施例中，影像设备300的成像束中心线与射源装置200的治疗束中心线相交。
示例的，射源装置200处于头部治疗模式时，射源装置200形成第一治疗束中心线；射源装置200处于体部治疗模式时，射源装置200形成第二治疗束中心线。影像设备300的成像束中心线与第一治疗束中心线存在夹角；或影像设备300的成像束中心线与第二治疗束中心线存在夹角；或影像设备300的成像束中心线同时与第一治疗束中心线和第二治疗束中心线存在夹角。优选的，影像设备300的成像束中心线与射源装置200的治疗束中心线垂直。也即影像设备300的成像束中心线与水平面平行，并且与射源装置200的治疗束中心线垂直，也即与第一治疗束中心线垂直；或与第二治疗束中心线垂直；或分别与第一治疗束中心线和第二治疗束中心线垂直。
在其中一个实施例中，射线发射装置310和射线接收装置320沿患者头脚方向位于治疗区域的两侧。
示例的地，射源装置200处于头部治疗模式时，形成第一治疗区域。射源装置200处于体部治疗模式时，形成第二治疗区域。或者示例的，在患者头脚 方向，射线发射装置310和射线接收装置320在第一治疗区域或第二治疗区域的两侧。在患者头脚方向，射线发射装置310位于治疗区域头部方向一侧，射线接收装置320位于治疗区域的脚部方向一侧。射线发射装置310位于治疗区域脚部方向一侧，射线接收装置320位于治疗区域的头部方向一侧。示例的，以治疗区域为基准，可以射线发射装置310设置在治疗区域的前方，也就是头部方向，射线接收装置320设置在治疗区域的后方，也就是脚部方向；也可以射线发射装置310设置在治疗区域的后方，也就是脚部方向，射线接收装置320设置在治疗区域的前方，也就是头部方向。只需保证患者在治疗床400上时，射线发射装置310产生的射线穿过患者后被射线接收装置320接收即可。可以理解的，在患者的上下方向，可以设射线发射装置310设置在患者的上方，射线接收装置320设置在患者的下方；也可以射线发射装置310设置在患者的下方，射线接收装置320设置在患者的上方。
在其中一个实施例中，射线发射装置310和射线接收装置320沿患者左右方向位于治疗区域的两侧。示例的，射线发射装置310和射线接收装置320设置于机架100上，并且在患者左右方向的两侧。其中，可以射线发射装置310设置在左侧，射线接收装置320设置在右侧；也可以射线发射装置310设置在右侧，射线接收装置320设置在左侧。
在其中一个实施例中，影像设备300包括至少一个射线发射装置310以及至少一个射线接收装置320。
示例地，影像设备300可以包括一组射线发射装置310和射线接收装置320。优选的，影像设备300包括两个射线发射装置310和两个射线接收装置320。两个射线发射装置310和两个射线接收装置320分别相对设置。例如：第一射线发射装置与第一射线接收装置相对设置；第二射线发射装置与第二射线接收装置相对设置。
相对于射源装置200形成的治疗区域，在患者的头脚方向。治疗区域的前方，即患者的头部方向；治疗区域的后方，即患者的脚部方向。可以第一射线发射装置、第一射线接收装置、第二射线发射装置以及第二射线接收装置均设置于治疗区域的后方。也可以第一射线发射装置、第一射线接收装置、第二射线发射装置以及第二射线接收装置均设置于治疗区域的前方。还可以第一射线发射装置设置于治疗区域的前方，第一射线接收装置设置于治疗区域的后方，第二射线发射装置设置于治疗区域的前方，第二射线接收装置设置于治疗区域的后方。还可以第一射线发射装置设置于治疗区域的后方，第一射线接收装置 设置于治疗区域的前方，第二射线发射装置设置于治疗区域的后方，第二射线接收装置设置于治疗区域的前方。还可以第一射线发射装置设置于治疗区域的前方，第一射线接收装置设置于治疗区域的后方，第二射线发射装置设置于治疗区域的后方，第二射线接收装置设置于治疗区域的前方。还可以第一射线发射装置设置于治疗区域的后方，第一射线接收装置设置于治疗区域的前方，第二射线发射装置设置于治疗区域的前方，第二射线接收装置设置于治疗区域的后方。
相对于射源装置200形成的治疗区域，在患者的左右方向。治疗区域的左方，即患者的左部方向；治疗区域的右方，即患者的右部方向。可以第一射线发射装置设置于治疗区域的右方，第一射线接收装置设置于治疗区域的左方，第二射线发射装置设置于治疗区域的右方，第二射线接收装置设置于治疗区域的左方。还可以第一射线发射装置设置于治疗区域的左方，第一射线接收装置设置于治疗区域的右方，第二射线发射装置设置于治疗区域的左方，第二射线接收装置设置于治疗区域的右方。还可以第一射线发射装置设置于治疗区域的右方，第一射线接收装置设置于治疗区域的左方，第二射线发射装置设置于治疗区域的左方，第二射线接收装置设置于治疗区域的右方。还可以第一射线发射装置设置于治疗区域的左方，第一射线接收装置设置于治疗区域的右方，第二射线发射装置设置于治疗区域的右方，第二射线接收装置设置于治疗区域的左方。
相对于射源装置200形成的治疗区域，在患者的上下方向。治疗区域的上方，即患者的上部方向；治疗区域的下方，即患者的下部方向。可以第一射线发射装置设置于治疗区域的上方，第一射线接收装置设置于治疗区域的下方，第二射线发射装置设置于治疗区域的上方，第二射线接收装置设置于治疗区域的下方。还可以第一射线发射装置设置于治疗区域的下方，第一射线接收装置设置于治疗区域的上方，第二射线发射装置设置于治疗区域的下方，第二射线接收装置设置于治疗区域的上方。还可以第一射线发射装置设置于治疗区域的上方，第一射线接收装置设置于治疗区域的下方，第二射线发射装置设置于治疗区域的下方，第二射线接收装置设置于治疗区域的上方。还可以第一射线发射装置设置于治疗区域的下方，第一射线接收装置设置于治疗区域的上方，第二射线发射装置设置于治疗区域的上方，第二射线接收装置设置于治疗区域的下方。
在上述三个方向的设置可以自由组合，只需要满足两组射线接收装置320 和射线发射装置310的射线束相交，并且相交的区域能覆盖治疗床400上的患者即可。
在其中一个实施例中，影像设备300包括两个射线发射装置310以及两个射线接收装置320，两个射线发射装置310与两个射线接收装置320交叉成像。示例的，交叉成像中两成像束的交叉角度可以为90°，交叉角度也可以不为90。
在其中一个实施例中，影像设备设置于射源装置上，随射源装置同步翻转，以在射源装置处于不同工作位时，对患者身体的部分进行成像。
示例的，影像设备可以设置在射源装置的边缘，当射源装置翻转处于不同的工作位置时，影像设备能够跟随射源装置同步翻转。在翻转前后，影像设备相对于射源装置的位置不变，影像设备的成像区域相对于射源装置的位置不变，影像设备的成像区域相对于射源装置的治疗区域位置不变。
在其中一个实施例中，所述影像设备的射线发生装置发出的射束中心在所述射线接收装置的投影，偏离所述射线接收装置的成像中心。
示例的，影像设备发出的射线束投影在射线接收装置表面，射线束的中心线在射线接收装置表面形成的点，与射线接收装置的中心点，不为同一个点。也就是说影像设备发出射线束在射线接收装置表面形成的区域，不是射线接收装置的中心区域。
本申请实施例提供的放疗系统，可以同时实现头部治疗模式以及体部治疗模式，并在通过增加影像设备，利用影像设备确定患者的待照射区域与放疗系统的射线照射区域之间的位置关系。再根据位置关系进行摆位，从而保证摆位精度更高，进一步的使射线照射的效果更加的理想，避免对患者的其他区域造成损伤。在放疗系统进行治疗时，可以利用影像设备进行实时成像，从而确保靶区和射线照射区域的位置精度，并且可以实时检测射线束的剂量，以确保治疗的效果。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (27)

  1. 一种放疗系统，其特征在于，所述放疗系统包括：机架、射源装置以及影像设备；
    所述射源装置设置于机架上；
    所述射源装置用于对患者进行射线照射治疗，所述射源装置通过翻转在不同工作位之间进行转换；
    所述影像设备用于对患者身体的部分进行成像。
  2. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备的成像束中心线与射源装置的治疗束中心线非共面。
  3. 根据权利要求1所述的放疗系统，其特征在于，所述射源装置通过翻转形成第一治疗模式和第二治疗模式，且
    所述射源装置处于第一治疗模式时，形成第一治疗区域；
    所述射源装置处于第二治疗模式时，形成第二治疗区域；
    所述第一治疗区域与所述第二治疗区域不重叠。
  4. 根据权利要求3所述的放疗系统，其特征在于，
    所述射源装置处于第一治疗模式时，形成第一治疗束中心线；
    所述射源装置处于第二治疗模式时，形成第二治疗束中心线；
    所述第一治疗束中心线和/或所述第二治疗束中心线中至少一个与所述影像设备的成像束中心线非共面。
  5. 根据权利要求4所述的放疗系统，其特征在于，所述第一治疗束中心线和/或所述第二治疗束中心线与所述影像设备的成像束中心线沿患者左右方向的横截面非共面。
  6. 根据权利要求1所述的放疗系统，其特征在于，
    所述射源装置处于第一治疗模式时，用于对患者头部进行治疗，所述影像设备的成像区域与患者头部至少部分重叠；或，
    所述射源装置处于第二治疗模式时，用于对患者体部进行治疗，所述影像设备的成像区域与患者体部至少部分重叠。
  7. 根据权利要求6所述的放疗系统，其特征在于，
    所述影像设备的成像区域覆盖所述患者的靶区。
  8. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备的成像区域与所述射源装置的治疗区域不重叠或至少部分重叠。
  9. 根据权利要求8所述的放疗系统，其特征在于，
    所述射源装置处于第一治疗模式时，形成第一治疗区域，所述影像设备的成像区域与所述第一治疗区域至少部分重叠；或，
    所述放疗系统处于第二治疗模式时，形成第二治疗区域，所述影像设备的成像区域与所述第二治疗区域至少部分重叠。
  10. 根据权利要求1所述的放疗系统，其特征在于，所述影像设备安装在所述机架上；或者，
    所述影像设备通过固定装置独立安装在治疗室内。
  11. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备的成像区域可调整。
  12. 根据权利要求11所述的放疗系统，其特征在于，
    所述影像设备包括射线发射装置以及射线接收装置，所述射线发射装置产生的射线被所述射线接收装置接收；
    所述射线发射装置和/或所述射线接收装置可移动和/或转动。
  13. 根据权利要求12所述的放疗系统，其特征在于，所述射线发射装置或所述射线接收装置安装在所述机架上，并可相对所述机架移动和/或转动。
  14. 根据权利要求13所述的放疗系统，其特征在于，所述机架上设置有导轨，所述射线发射装置或所述射线接收装置可沿所述导轨相对所述机架移动。
  15. 根据权利要求13所述的放疗系统，其特征在于，所述射线发射装置或所述射线接收装置通过固定机构与所述机架固定，所述射线发射装置或所述射线接收装置相对所述固定机构移动和/或转动。
  16. 根据权利要求15所述的放疗系统，其特征在于，所述固定机构可相对所述机架移动和/或转动。
  17. 根据权利要求12所述的放疗系统，其特征在于，
    所述射线发射装置和/或所述射线接收装置在患者头脚方向、患者左右方向、患者上下方向中的至少一个方向移动。
  18. 根据权利要求12所述的放疗系统，其特征在于，
    所述射线发射装置设置于所述第一转动机构上，且能绕所述第一转轴旋转；和/或
    所述射线接收装置设置于所述第二转动机构上，且能绕所述第二转轴旋转。
  19. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备的成像束中心线与所述射源装置的治疗束中心线相交。
  20. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备的成像束中心线与所述射源装置的治疗束中心线垂直。
  21. 根据权利要求1所述的放疗系统，其特征在于，
    所述射线发射装置和所述射线接收装置沿患者头脚方向位于治疗区域的两侧。
  22. 根据权利要求21所述的放疗系统，其特征在于，
    在患者头脚方向，所述射线发射装置位于治疗区域头部方向一侧，所述射线接收装置位于治疗区域的脚部方向一侧，或者，
    在患者头脚方向，所述射线发射装置位于治疗区域脚部方向一侧，所述射线接收装置位于治疗区域的头部方向一侧。
  23. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备包括至少一个射线发射装置以及至少一个射线接收装置。
  24. 根据权利要求23所述的放疗系统，其特征在于，
    所述影像设备包括两个射线发射装置以及两个射线接收装置，两个所述射线发射装置与两个所述射线接收装置交叉成像。
  25. 根据权利要求24所述的放疗系统，其特征在于，
    所述交叉成像的交叉角度不为90°。
  26. 根据权利要求1所述的放疗系统，其特征在于，
    所述影像设备设置于所述射源装置上，随所述射源装置同步翻转，以在所述射源装置处于不同工作位时，对患者身体的部分进行成像。
  27. 根据权利要求1所述的放疗系统，其特征在于，所述影像设备的射线发生装置发出的射束中心在所述射线接收装置的投影，偏离所述射线接收装置的成像中心。
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CN1899647A (zh) * 2005-07-18 2007-01-24 郑铁 全身γ刀放射治疗装置
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