CN219050154U - Cone beam computed tomography system - Google Patents
Cone beam computed tomography system Download PDFInfo
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- CN219050154U CN219050154U CN202223028574.9U CN202223028574U CN219050154U CN 219050154 U CN219050154 U CN 219050154U CN 202223028574 U CN202223028574 U CN 202223028574U CN 219050154 U CN219050154 U CN 219050154U
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Abstract
The utility model discloses a cone beam computed tomography system, belonging to the technical field of radiotherapy; the therapeutic device comprises a therapeutic room and a therapeutic bed matched with the therapeutic room, wherein a rotary frame is rotatably arranged in the therapeutic room, a therapeutic head and an X-ray source are arranged on the rotary frame, a bearing plate which is opposite to the X-ray source is connected in a sliding manner in the middle of the rear end of the rotary frame, an X-ray detection plate is arranged on the bearing plate, and a linear module for controlling the movement of the bearing plate is arranged in the rear end of the rotary frame; the utility model can accurately irradiate the target area of the patient, has the advantages of accurate positioning, simple operation, convenient adjustment, high imaging precision, multifunctional mode imaging and the like, ensures the accuracy of proton treatment, and has important significance for the treatment of cancer patients.
Description
Technical Field
The utility model relates to a cone beam computed tomography system, and belongs to the technical field of radiotherapy.
Background
Cone-beam computed tomography (Cone Beam Computed Tomography, CBCT) for radiation therapy is currently the most widely used image-guided technique in the field of radiation therapy. The principle is that the X-ray generator makes annular digital projection around the projection with lower radiation quantity, then the data obtained in the intersection after multiple digital projections around the projection are recombined in the computer to obtain the three-dimensional image. The method is mainly used for position verification during radiotherapy positioning and during radiotherapy treatment, so as to accurately position a focus area, feed back the focus area to a treatment system, and further enable a treatment end to emit proton beam according to the determined position to treat a patient, and take on the positioning function of the focus area during proton medical treatment, so that the CBCT three-dimensional imaging mechanism has an important function for ensuring the accuracy of proton treatment.
In the application, an object to be detected is placed in a rotation center of a system, then an X-ray tube and a detection flat plate rotate around the rotation center, and projection images of all angles are acquired at the same time to carry out three-dimensional reconstruction. However, there are some drawbacks in this method, such as in diagnosis and treatment, to meet the scanning requirements of different body types or different positions of the same body type at the same time, under this application scenario, the existing X-ray detection plate is fixed, so that it is inconvenient for the operator to flexibly use, sometimes the projection view of the detection object cannot be well matched with the size of the detection plate, when the radiation generator and the target imaging object (usually, a patient) are used for imaging different parts, the adjustment range is limited for a specific patient, the optimal state cannot be achieved, and the detection plate cannot fully exert the advantage of detection precision.
In addition, the current image guiding system occupies large space and uses more resources, and the image guiding system of the rotary treatment room needs to rotate together with the treatment head by means of the cylinder type rotary frame, so that the influence of the image equipment on the treatment flow is larger.
Disclosure of Invention
In order to overcome the deficiencies of the prior art described above, the present utility model provides a cone beam computed tomography system.
The technical scheme adopted by the utility model is as follows: the cone beam computer tomography scanning system comprises a treatment room and a treatment bed matched with the treatment room, wherein the treatment bed is arranged on the bottom surface of the treatment room through a mechanical arm with 6 degrees of freedom, a rotating rack (360 DEG rotation) is rotatably arranged in the treatment room, a treatment head and an X-ray source which can rotate along with the rotating rack are arranged on the rotating rack, the treatment head and the X-ray source are kept relatively static when in use, the middle part of the rear end of the rotating rack is connected with a bearing plate which is opposite to the X-ray source in a sliding manner, an X-ray detection plate is arranged on the bearing plate, and the maximum effective detection range of the X-ray detection plate is 43X43cm 2 The X-ray source and the X-ray detection plate form imaging X-rays, the X-rays are KV-level X-rays with adjustable angles of 40-150 KV, cone beam angles are about 8 degrees, a linear module for controlling the motion of the bearing plate is arranged inside the rear end of the rotating frame and extends out of the frame and withdraws the frame, the linear module comprises a guide rail, a screw rod, a motor, a sliding block and the like, the guide rail, the screw rod, the motor and the like inside the rotating frame are not shown in the drawings because of the prior art, and the connecting and mounting structure between the linear module and the rotating frame is implemented according to the conventional technical means which can be adopted by a person skilled in the art, and the linear module is not described herein, and only needs to control the bearing plate to stretch and slide back and forth at a designated position.
Furthermore, two X-ray sources are arranged on the rotary frame, two bearing plates are correspondingly arranged in the middle of the rear end of the rotary frame, the two X-ray sources are intersected with X-rays formed between the corresponding X-ray detection plates on the bearing plates, and the intersecting images have the advantages that the provided anatomical images can simply, accurately and safely verify the target region position of a patient, two-dimensional images can be obtained at one time, so that cone beam computerized tomography can form three-dimensional images quickly, and the registration time is shortened.
Further, two X-ray sources are installed in the left and right sides of treatment head, and the contained angle between the X-ray that X-ray source sent and the proton beam that treatment head sent is 45, and the X-ray that two X-ray sources sent forms orthogonal structure, through symmetrical installation and two sets of X-rays that are 90 degrees angles each other, can carry out accurate irradiation to the target area, have advantages such as location accuracy, easy operation, convenient adjustment, imaging precision height, multi-functional mode formation of image, guaranteed the accuracy of proton treatment. Provides real-time accurate image guidance for radiotherapy of the treatment head. The included angle between the X-ray emitted by the X-ray source and the proton beam emitted by the treatment head is 45 degrees, so that the installation of the imaging component is convenient, and the generated X-ray can well pass through the target area of a patient.
Further, the middle part of rotatory frame rear end has been seted up and has been used for holding the hollow rectangle slide of loading board, conveniently sets up, and the peripheral equipment is conveniently connected to the rectangle slide, the loading board slides and sets up in the rectangle slide, slides smoothly stable.
Further, the loading board is the rectangular plate, cooperate with the slide, be provided with two reinforcing bars in the middle part of its upside, promote the structural strength of loading board, prevent that it from stretching out after the certain degree warp, both ends are provided with spacing respectively, spacing and reinforcing bar laminating are in order to take place for the loading board with the slide on the one hand, prevent to rock because sliding dimension is greater than the loading board size in the flexible in-process, on the other hand reduce the friction between loading board and the slide through setting up spacing and reinforcing bar, avoid the loading board wearing and tearing, help the slip strip that side set up respectively about with the loading board to improve the smoothness of loading board together, it maintains to slide smoothly, spacing, reinforcing bar and help the slip strip all to pass through bolted connection with the loading board, change during maintenance spacing, reinforcing bar and help the slip in the slip strip correspond wearing and tearing can, change convenient and fast, the fixed slider that sets up the straight line module of loading board downside, slider and the lead screw threaded connection of straight line module.
Further, the X-ray detection plate is arranged on the upper side face of the front end of the bearing plate, one end of each of the reinforcing strip and the limiting strip is aligned with the rear end of the bearing plate, the other end of each of the reinforcing strip and the limiting strip is arranged in a clearance manner with the X-ray detection plate, dismounting connection of the X-ray detection plate is not interfered, the front end and the rear end of each sliding assisting strip are aligned with the front end and the rear end of the bearing plate respectively, and sliding stability of the whole bearing plate body is guaranteed.
Further, the outer end of loading board sets up the close board, the middle part of rotating frame rear end corresponds the front end position of rectangle slide and is provided with the close groove, and close board and close groove nest prevent that the dust from getting into the pollution X ray detection board.
Further, the sealing groove is a rectangular structure groove, four side groove walls are arranged in an outward inclined mode, the sealing plate is a rectangular structure plate attached to the sealing groove, and the sealing plate is correspondingly arranged in the sealing groove in an inclined mode to be attached to the sealing groove in a mode that the sealing plate is opposite to the four sides of the sealing groove wall, and sealing performance is improved.
Further, the thickness of close board is greater than the degree of depth of close groove for the position of loading board in rotatory frame is obvious, and the medical staff discernment and the operation of being convenient for, and the part four sides of close board outstanding close groove set up into the inclined plane structure, prevent that the dust from piling up.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the X-ray detection plate is arranged on the bearing plate which is arranged in a sliding manner, so that scanning fine adjustment requirements of different body types or different positions of the same body type can be simultaneously met in diagnosis and treatment, the X-ray detection plate is movably arranged, and is convenient for operators to flexibly use, so that the projection image of a detection object can be well matched with the size of the X-ray detection plate, and when an X-ray source and a target imaging object (usually a patient) are used for carrying out irradiation imaging on different parts, the adjustment range is increased for specific patients, so that the adjustment reaches the optimal state, and the X-ray detection plate can fully exert the advantages of detection precision;
2. in addition, the X-ray detection plate is arranged on the bearing plate which is arranged in a sliding way, the bearing plate can drive the X-ray detection plate to be contained at the rear part of the rotary rack, the occupied space and the use resources of the image guiding system are reduced, and the influence of the image equipment on the treatment flow is small;
3. the design of integrating the X-ray source and the X-ray detection plate in the rotating frame component can minimize the influence of the imaging equipment on the treatment process;
4. according to the X-ray detection device, the limit strips, the reinforcing strips and the sliding assisting strips are arranged on the bearing plate, so that the bearing plate slides stably, displacement errors are avoided in the extending, resting and retracting processes of the X-ray detection plate, and the positioning and imaging precision is ensured; the control is simple and safe, the mechanical strength is high, and the imaging precision is high;
5. the cone beam computer tomography system provided by the utility model simplifies the internal structure of a large rotating frame in the traditional proton medical equipment, has compact structure and reduced rotation interference, and ensures that the treatment end equipment is light.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an isometric view of the present utility model (carrier plate extended).
Fig. 2 is a schematic front view of the present utility model.
FIG. 3 is a schematic view of a carrier plate assembly according to the present utility model.
In the figure: 1-treatment bed, 2-rotating frame, 3-treatment head, 4-X ray source, 5-loading board, 51-reinforcement bar, 52-limit bar, 53-slip-aid bar, 6-X ray detection board, 7-slider, 8-close board, 9-close slot.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-3: the utility model provides a cone beam computer tomography scanning system, includes treatment room and the treatment bed 1 that uses with the treatment room is supporting, the indoor rotation of treatment is provided with rotatory frame 2, install treatment head 3 and X ray source 4 on the rotatory frame 2, the middle part sliding connection of rotatory frame 2 rear end has just to the loading board 5 of X ray source 4, be provided with X ray detection board 6 on the loading board 5, the inside straight line module that is provided with control loading board 5 motion in rotatory frame 2 rear end.
The rotating frame 2 is provided with two X-ray sources 4, two bearing plates 5 are correspondingly arranged in the middle of the rear end of the rotating frame 2, and the two X-ray sources 4 are intersected with X-rays formed between the corresponding X-ray detection plates 6 on the bearing plates 5. The two X-ray sources 4 are arranged on the left side and the right side of the treatment head 3, and the included angle between the X-rays emitted by the X-ray sources 4 and the proton beam emitted by the treatment head 3 is 45 degrees.
The middle part of the rear end of the rotating frame 2 is provided with a hollow rectangular slideway for accommodating the bearing plate 5, and the bearing plate 5 is slidably arranged in the rectangular slideway. The bearing plate 5 is a rectangular plate, two reinforcing strips 51 are arranged in the middle of the upper side surface of the bearing plate, limiting strips 52 are respectively arranged at two ends of the bearing plate, sliding-assisting strips 53 are respectively arranged on the left side surface and the right side surface of the bearing plate, and a sliding block 7 of the linear module is fixedly arranged on the lower side of the bearing plate 5. The X-ray detection plate 6 is arranged on the upper side of the front end of the bearing plate 5, one end of each of the reinforcing strip 51 and the limiting strip 52 is aligned with the rear end of the bearing plate 5, the other end of each of the reinforcing strip and the limiting strip is arranged in a clearance manner with the X-ray detection plate 6, and the front end and the rear end of the sliding assisting strip 53 are aligned with the front end and the rear end of the bearing plate 5 respectively.
The outer end of the bearing plate 5 is provided with a sealing plate 8, and the middle part of the rear end of the rotating frame 2 is provided with a sealing groove 9 corresponding to the front end position of the rectangular slideway. The sealing groove 9 is a rectangular structure groove, four side groove walls are arranged in an outward inclined mode, the sealing plate 8 is a rectangular structure plate attached to the sealing groove 9, and the sealing plate 8 is arranged in the sealing groove 9 in an inclined mode corresponding to the four sides of the groove wall of the sealing groove 9. The thickness of the sealing plate 8 is larger than the depth of the sealing groove 9, and the four sides of the part of the sealing plate 8 protruding out of the sealing groove 9 are provided with inclined structures.
While the present utility model has been described in detail with reference to the drawings, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the knowledge of those skilled in the art.
Claims (9)
1. The cone beam computer tomography system comprises a treatment room and a treatment bed (1) matched with the treatment room, wherein a rotating frame (2) is rotatably arranged in the treatment room, and a treatment head (3) and an X-ray source (4) are arranged on the rotating frame (2), and the cone beam computer tomography system is characterized in that: the middle part sliding connection of rotating frame (2) rear end has loading board (5) just to X ray source (4), be provided with X ray detection board (6) on loading board (5), rotating frame (2) rear end inside is provided with the sharp module of control loading board (5) motion.
2. The cone beam computed tomography system of claim 1 wherein: two X-ray sources (4) are arranged on the rotary frame (2), two bearing plates (5) are correspondingly arranged in the middle of the rear end of the rotary frame (2), and the two X-ray sources (4) are intersected with X-rays formed between the corresponding X-ray detection plates (6) on the corresponding bearing plates (5).
3. The cone beam computed tomography system of claim 2 wherein: the two X-ray sources (4) are arranged at the left side and the right side of the treatment head (3), and the included angle between the X-rays emitted by the X-ray sources (4) and the proton beam emitted by the treatment head (3) is 45 degrees.
4. A cone beam computed tomography system according to any of claims 1-3, wherein: the middle part of the rear end of the rotating frame (2) is provided with a hollow rectangular slideway for accommodating the bearing plate (5), and the bearing plate (5) is arranged in the rectangular slideway in a sliding way.
5. The cone beam computed tomography system of claim 4 wherein: the bearing plate (5) is a rectangular plate, two reinforcing strips (51) are arranged in the middle of the upper side surface of the bearing plate, limiting strips (52) are respectively arranged at two ends of the bearing plate, sliding-assisting strips (53) are respectively arranged on the left side surface and the right side surface of the bearing plate, and a sliding block (7) of the linear module is fixedly arranged on the lower side of the bearing plate (5).
6. The cone beam computed tomography system of claim 5 wherein: the X-ray detection plate (6) is arranged on the upper side face of the front end of the bearing plate (5), one end of each of the reinforcing strip (51) and the limiting strip (52) is aligned with the rear end of the bearing plate (5), the other end of each of the reinforcing strips and the limiting strips is arranged in a clearance mode with the X-ray detection plate (6), and the front end and the rear end of each of the sliding assisting strips (53) are aligned with the front end and the rear end of the bearing plate (5) respectively.
7. The cone beam computed tomography system of claim 6 wherein: the outer end of the bearing plate (5) is provided with a sealing plate (8), and the middle part of the rear end of the rotating frame (2) is provided with a sealing groove (9) corresponding to the front end position of the rectangular slideway.
8. The cone beam computed tomography system of claim 7 wherein: the sealing groove (9) is a rectangular structure groove, four side groove walls are arranged in an outward inclined mode, the sealing plate (8) is a rectangular structure plate attached to the sealing groove (9), and the sealing plate (8) is arranged in the sealing groove (9) in an inclined mode corresponding to the four sides of the groove wall of the sealing groove (9).
9. The cone beam computed tomography system of claim 8 wherein: the thickness of the sealing plate (8) is larger than the depth of the sealing groove (9), and the four sides of the part of the sealing plate (8) protruding out of the sealing groove (9) are provided with inclined structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223028574.9U CN219050154U (en) | 2022-11-14 | 2022-11-14 | Cone beam computed tomography system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223028574.9U CN219050154U (en) | 2022-11-14 | 2022-11-14 | Cone beam computed tomography system |
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| CN219050154U true CN219050154U (en) | 2023-05-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117482418A (en) * | 2023-12-14 | 2024-02-02 | 合肥中科离子医学技术装备有限公司 | Proton therapy system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117482418A (en) * | 2023-12-14 | 2024-02-02 | 合肥中科离子医学技术装备有限公司 | Proton therapy system |
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