Scanning system for BNCT irradiation dose measurement

Abstract

The utility model discloses a scanning system for BNCT irradiation dose measurement, which comprises a movable treatment bed and a three-dimensional scanning device, the three-dimensional scanning device is in dimension butt joint with any side face of a neutron emitting end of a horizontal beam, the height space of the three-dimensional scanning device can be adjusted at will, and the three-dimensional scanning device is arranged on the treatment bed in a replaceable mode. And the three-dimensional scanning device comprises a three-dimensional scanning container and an external three-dimensional modular transmission mechanism which is adaptive to the three-dimensional scanning containers of multiple specifications and is used for realizing three-dimensional movement of the detector. Flexible positioning operation can be met, three-dimensional scanning containers of various different specifications can utilize the same mechanical transmission device, the mechanical transmission device and the three-dimensional scanning containers are mutually independent, module arrangement does not affect butt joint of a neutron emitting end and any side dimension of a water tank, and height space can be adjusted at will and is not limited.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a scanning system for BNCT irradiation dose measurement. Background Technology

[0002] Three-dimensional radiotherapy tanks are essential tools for calibrating and verifying radiation dose distribution in radiotherapy. They are typically used to verify the dose calculation accuracy of radiotherapy planning systems, ensuring patients receive precise doses during radiotherapy. Tumor radiotherapy is a cancer treatment method that uses focused radiation to kill tumor cells. Radiation (neutrons, protons, photons, heavy ions, etc.) is invisible to the naked eye and requires an ionization chamber and a measuring tank. Quantitative measurement of radiation by the tank is a necessary step to ensure accurate tumor radiotherapy doses.

[0003] In clinical radiotherapy, the 3D scanning tank is filled with a test liquid that simulates the internal tissues of the human body. During the debugging or quality control testing of radiotherapy equipment (accelerator), it serves as an important quality control device for data acquisition or verification of various irradiation field conditions of the radiotherapy equipment. During measurement, the 3D tank scans the radiation field at the center or reference point of the treatment equipment to measure the distribution of three-dimensional dose in the water. This data is used for data acquisition, debugging, or quality control testing of the treatment planning system of the radiotherapy equipment.

[0004] Currently, the water tanks in clinical 3D radiotherapy scanning systems are all imported, mainly from well-known brands such as PTW, IBA, and DoseView. Domestically produced 3D radiotherapy water tanks are almost nonexistent. However, the water tanks currently in clinical use have the following defects:

[0005] 1. The mechanical transmission device and water tank are integrated, requiring a separate mechanical transmission device for each tank size. This results in relatively high product costs. Furthermore, when using water tanks of different sizes for quality control, a complete set of equipment needs to be purchased, leading to redundant product utilization. 2. The guide rails and motors in the mechanical transmission device are custom-made, resulting in instability and poor reliability. 3. Currently, most 3D water tanks operate with the guide rails and motors submerged in water. This mechanical transmission device occupies internal space within the tank, limiting the detector's scanning space. 4. Most 3D water tanks currently require a liftable trolley for placement and horizontal calibration. However, due to shielding requirements, the collimator port for BNCT treatment is typically close to the wall, making the trolley's size inconvenient for placement. Moreover, the liftable trolley lacks sufficient placement flexibility, preventing docking with the collimator port at any 3D position.

[0006] Furthermore, the water tanks currently used in clinical practice are for vertical irradiation during general radiotherapy. A mobile trolley is positioned beneath the tank, moving it to position it between the support and the beam exit. However, the height is limited by the application scenario, offering little room for adjustment. For BNCT (Boron Neutron Capture Therapy Experimental Device) applications with horizontal beam exit, quantitative measurements require the water tank to be positioned close to the neutron exit (typically 0-6 cm), necessitating precise height adjustments. The treatment room directly opposite the BNCT neutron exit typically features a treatment bed with movement, rotation, and lifting capabilities. A robotic arm controls the bed's position, allowing for stable and precise adjustments.

[0007] Against this background, this application proposes a new scanning system scheme for BNCT irradiation dose measurement.

[0008] On the one hand, existing 3D radiotherapy tanks have the mechanical transmission device located inside the tank, which can cause neutron activation during neutron irradiation, affecting measurement accuracy. On the other hand, existing tanks do not take into account the need for the horizontal alignment between the neutron emission end and the tank end face, and cannot meet the application requirements of horizontal beam emission in BNCT.

[0009] To address the aforementioned shortcomings of the water tank in existing scanning systems, there is an urgent need to design a scanning system for BNCT irradiation dose measurement. This system should be applicable to the field of BNCT neutron therapy, allowing for flexible positioning and docking with the collimator outlet at any location. It should also accommodate various 3D scanning containers of different specifications using the same mechanical transmission device, without occupying internal container space or affecting detection accuracy. This would result in more accurate dose detection by the detector, and the system would not be limited by adjustment space in the height direction, nor would it affect docking with the neutron emission end. Utility Model Content

[0010] The purpose of this invention is to address the problems of existing scanning systems that require a single mechanical transmission device for each type of water tank, resulting in high cost, redundant product utilization, customized mechanical transmission devices with poor stability and reliability, and the mechanical transmission devices occupying internal space in the water tank, limiting the detector's scanning space and affecting the detector's dose control accuracy. Furthermore, the presence of transmission components on all four sides of the water tank affects the docking of the neutron emission end, making it unsuitable for BNCT horizontal beam emission scenarios and limiting height adjustment. This invention also addresses the inconvenience of positioning in existing scanning systems by providing a new system applicable to BNCT neutron therapy. This system allows for flexible positioning, enables the use of a single mechanical transmission device for various sizes of 3D scanning containers, and ensures that the mechanical transmission device is independent of the 3D scanning container, does not occupy internal space, does not cause neutron activation and particle generation, and does not affect detection accuracy. This results in more accurate dose detection by the detector, and the module setup does not affect the docking of the neutron emission end with any side dimension of the water tank. Moreover, the height space is arbitrarily adjustable, making this a scanning system for BNCT irradiation dose measurement.

[0011] The technical solution adopted by this invention to achieve its objective is: a scanning system for BNCT radiation dose measurement, comprising a movable treatment bed and a three-dimensional scanning device that can be docked with any side of the horizontally beaming neutron emission end and whose height can be arbitrarily adjusted. The three-dimensional scanning device is replaceably mounted on the treatment bed. The three-dimensional scanning device includes a three-dimensional scanning container and an external three-dimensional module-type transmission mechanism for realizing the three-dimensional movement of the detector, which is adapted to multiple specifications of three-dimensional scanning containers. This scanning system for BNCT radiation dose measurement, through the cooperation of a movable treatment bed and the three-dimensional scanning device thereon, has a higher degree of freedom of movement in three dimensions and greater flexibility because the three-dimensional scanning device can dock with the horizontally beaming neutron emission end. It can meet the needs of different position adjustments and overall movement, and can achieve arbitrary docking for neutron emission ends at different positions. To facilitate docking between the 3D scanning device and the horizontally beaming neutron emitter, the 3D scanning device employs an external 3D modular transmission mechanism, separating the transmission mechanism from the 3D scanning container. This external 3D modular transmission mechanism enables arbitrary movement of the detector in the X, Y, and Z directions. The external 3D modular transmission mechanism and the 3D scanning container operate independently and do not interfere with each other. Furthermore, because all mechanical transmission mechanisms are integrated and located outside the 3D scanning container, only the detector is immersed in the liquid within the container during operation. The interior of the 3D scanning container contains no other metal components besides the detector, avoiding the problem of neutron activation and particle generation. This significantly improves the accuracy of the detector's data acquisition and increases the scanning space range within the 3D scanning container, solving the problem of limited scanning space for detectors in the same 3D scanning container. The 3D scanning container can be replaced as needed. Different specifications of 3D scanning containers all use the same set of external modular transmission mechanisms, which enables the movement of the detector to be controlled by the same set of external 3D modular transmission mechanisms. During use, only different 3D scanning containers need to be replaced to meet the usage requirements of different target area sizes and shapes. This simplifies the equipment, achieves universality and adaptability, and saves costs.

[0012] Preferably, the 3D scanning device is connected to the treatment bed via a transition connection and moves with the treatment bed; the transition connection and the treatment bed are connected by an adjustable snap-fit ​​locking structure. This allows for rapid connection and positioning of the transition device to any position on the treatment bed, enabling the 3D scanning device to be placed in different positions on the treatment bed, thus achieving flexible positioning to meet different usage requirements.

[0013] Preferably, the transition connection device includes a carbon fiber container pad, an aluminum alloy adapter strip disposed on the bottom surface of the carbon fiber container pad, and a positioning locking element.

[0014] Preferably, the locking structure includes hooks with locking holes at both ends of the aluminum alloy adapter strip, a positioning locking element disposed within the locking holes, and several positioning holes on both sides of the treatment bed. The positioning locking element engages with the positioning holes to achieve locking. This ensures the stability of the 3D scanning device during movement with the treatment bed.

[0015] Preferably, the 3D scanning device further includes a device base plate, and the external 3D modular transmission mechanism is mounted independently of the 3D scanning container on the device base plate. To achieve an integrated design of the 3D scanning device, the external 3D modular transmission mechanism is mounted on a device base plate, while the 3D scanning container can be placed on the device base plate as needed. The entire 3D scanning device has a simple structure and is easy to use.

[0016] Preferably, the device base plate is provided with multiple quick-change positioning structures for installing and positioning 3D scanning containers. This allows for rapid replacement and positioning of 3D scanning containers of different sizes without the need to re-find the center position.

[0017] Preferably, the multiple container quick-change positioning structures are centrally located. Each quick-change positioning structure includes a container positioning slot and a container positioning pin located inside the slot; correspondingly, a positioning hole is provided at the bottom of the 3D scanning container. The centrally located multiple container quick-change positioning structures facilitate positioning during the rapid replacement of the 3D scanning container. It eliminates the need to re-find the center position during container replacement; the 3D scanning container can be directly installed into the corresponding size container positioning slot for positioning, making the operation more convenient and faster. The container positioning slot provides circumferential limiting positioning of the 3D scanning container, and the container positioning pin ensures that the 3D scanning container is always placed in the same position, eliminating the need for repositioning each time.

[0018] Preferably, the 3D scanning container is replaceably and movablely installed inside the container positioning slot and positioned by the container positioning pin. The 3D scanning container, the device base plate, and the external 3D module transmission mechanism are independently set, which allows multiple 3D scanning containers of different specifications to share the same device base plate and 3D module. This enables the device to achieve universality and applicability, streamlines the device design, avoids redundancy issues in container product utilization, and saves costs.

[0019] Preferably, the container quick-change positioning structure includes multiple sets of container positioning sleeves or conical positioning pins of various specifications mounted on the device base plate, corresponding to multiple sets of container positioning sleeves or conical positioning pins of various specifications mounted on the 3D scanning container. Alternatively, the container positioning sleeves and conical positioning pins work together to achieve quick positioning of the 3D scanning container. The operation is very simple, and the positioning is less prone to tilting, wear, or deformation of the positioning pins. The conical positioning pins used for high-precision positioning ensure a repeatability accuracy of ≤0.003 mm for each positioning. This allows for rapid installation and positioning of 3D scanning containers of different specifications, improving the adaptability and versatility of the equipment. It can meet the usage requirements of different target area sizes and shapes, thus better adapting to the needs of different organs and treatment techniques, ensuring that each patient receives accurate and effective dose distribution during radiotherapy, thereby improving treatment efficacy and safety.

[0020] Preferably, the external three-dimensional modular transmission mechanism is a cantilever structure. The external three-dimensional modular transmission mechanism can adopt a cantilever structure.

[0021] Preferably, the external three-dimensional modular transmission mechanism is a frame structure. The external three-dimensional modular transmission mechanism can also adopt a frame structure.

[0022] Preferably, the external three-dimensional modular transmission mechanism is integrated with X-axis, Y-axis, and Z-axis modules that enable the detector assembly to perform linear reciprocating motion along the X, Y, and Z axes. The external three-dimensional modular transmission mechanism integrates the X-axis, Y-axis, and Z-axis modules into a single, unified design. In use, the detector can achieve linear reciprocating motion in the X, Y, and Z axes under the control of the external three-dimensional modular transmission mechanism, and can move precisely according to the coordinates set in the program. This integrated design makes the mechanical transmission mechanism more compact and simplified.

[0023] Preferably, the X-axis module, Y-axis module, and Z-axis module are respectively equipped with lead screw linear modules or linear motor modules. Using lead screw linear modules or linear motor modules for transmission control results in more precise transmission, with a control accuracy of ±0.001mm.

[0024] Preferably, the X-axis module, Y-axis module, and Z-axis module are each integrated with an integrated drive controller. This integrated drive controller allows the controller driver to be built into the module, eliminating the need for external modules and simplifying the overall device structure. Only a single Mini USB cable is needed to connect to the host computer for motion control of the detector.

[0025] Preferably, the detector is mounted on an external three-dimensional modular transmission mechanism via a detector clamp made of aluminum. The detector is connected to the external three-dimensional modular transmission mechanism via the detector clamp, enabling clamping and positioning of different detectors. Different detectors can be replaced as needed, making operation convenient and quick.

[0026] Preferably, the detector fixture is equipped with a detector clamping and positioning structure. This clamping and positioning structure facilitates quick and easy replacement of different detectors.

[0027] Preferably, the 3D scanning container is a multi-size replaceable type, and the 3D scanning container is made of polymethyl methacrylate (PMMA). Different sizes of the 3D scanning container can be replaced as needed. The use of PMMA prevents neutron activation issues, enabling the detector to detect particles more accurately.

[0028] The beneficial effects of this utility model are: 1. The scanning system for BNCT irradiation dose measurement, through the cooperation of a treatment bed that can be moved and positioned arbitrarily and a three-dimensional scanning device on it, can be docked with the horizontal beam-emitting neutron emission end. Therefore, the scanning system has a higher degree of freedom of movement in the three-dimensional direction, has more flexibility, can meet the needs of different position adjustments and overall movement, and can achieve arbitrary docking for neutron emission ends in different positions.

[0029] 2. By using the same external three-dimensional modular transmission mechanism, the device achieves universality and can be used with three-dimensional scanning containers of different sizes and specifications, which improves the adaptability of the equipment and can meet the needs of different target area sizes and shapes. It can better adapt to the needs of different organs and treatment techniques, ensuring that each patient can obtain accurate and effective dose distribution during radiotherapy, thereby improving treatment effectiveness and safety.

[0030] 3. The external 3D modular transmission mechanism eliminates the need for any metal components inside the 3D scanning container except for the detector, avoiding the problem of neutron activation and particle generation. This improves the accuracy of the detector's data acquisition and makes detection more precise. It also increases the accuracy of the detector's 3D dose measurement, making the results closer to reality. Since there is no influence from stainless steel, carbon steel, or other metals in the 3D scanning container, the beam emitted from the collimator in BNCT consists of neutrons. These neutrons enter the 3D scanning tank, and because there is no metal interference, the measurement accuracy is higher. Furthermore, because the external 3D modular transmission mechanism is independent of the 3D scanning container, it does not obstruct any of the four sides of the container, allowing all horizontally exiting neutron beams to dock with the 3D scanning container. The height can be adjusted arbitrarily without restriction. The mechanical structure design of the motion guide rail is more rational, effectively preventing guide rail deformation caused by changes in the center of gravity after module movement and detector installation.

[0031] 4. It solves the problem of limited scanning space for detectors in three-dimensional scanning containers of the same specifications. The external three-dimensional module transmission mechanism that drives the detector to move up and down is not set in the liquid of the three-dimensional scanning container, which increases the scanning space range in the liquid. Only the detector moves in the three-dimensional scanning container, which not only increases the scanning space range of the detector, but also makes the detection dose accuracy of the detector more accurate.

[0032] 5. The 3D scanning container can achieve linear reciprocating motion in three directions: X, Y, and Z axes, and can be precisely moved to the coordinate position according to the coordinates set in the program.

[0033] 6. The 3D scanning container and the external 3D module transmission mechanism are set up with independent structures, realizing the separation of the transmission mechanism and the 3D scanning container, and realizing the sharing of a set of mechanical transmission mechanisms for various 3D scanning containers of different specifications.

[0034] 7. The same mechanical transmission structure can be used to detect the dose of three-dimensional scanning containers of different sizes and specifications.

[0035] 8. The 3D scanning container adopts an external 3D module transmission mechanism for more precise transmission, with a control accuracy of ±0.001mm. The controller and driver are built into the module, eliminating the need for external modules. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a scanning system for BNCT irradiation dose measurement according to this utility model.

[0037] Figure 2 This is a schematic diagram of one structure of the three-dimensional scanning device in this invention.

[0038] Figure 3This is a structural schematic diagram of the three-dimensional scanning device in this invention from another angle.

[0039] Figure 4 This is an exploded structural diagram of the treatment bed and the transition connection device in this utility model.

[0040] Figure 5 This is a schematic diagram of the structure of the three-dimensional scanning device (excluding the three-dimensional scanning container) in this utility model.

[0041] Figure 6 This is a structural schematic diagram of the three-dimensional scanning device (excluding the three-dimensional scanning container) in this utility model from another angle.

[0042] Figure 7 This is a schematic diagram of the second structure of the three-dimensional scanning device in this utility model.

[0043] Figure 8 This is a schematic diagram of the detector fixture in this utility model.

[0044] Figure 9 This is a schematic diagram of a connection structure of the X-axis module in this utility model.

[0045] Figure 10 This is a schematic diagram of the structure of the Y-axis module in this utility model.

[0046] Figure 11 This is a schematic diagram of the Z-axis module in this utility model.

[0047] Figure 12 This is a schematic diagram of the structure of the three-dimensional scanning device (small water tank) of this utility model.

[0048] Figure 13 This is a schematic diagram of a scanning system used for BNCT irradiation dose measurement in Embodiment 2 of this utility model.

[0049] Figure 14 This is a schematic diagram of the structure of a three-dimensional scanning device in Embodiment 2 of this utility model.

[0050] Figure 15 This is a schematic diagram of the structure of the three-dimensional scanning device (excluding the three-dimensional scanning container) in Embodiment 2 of this utility model.

[0051] Figure 16 This is a schematic diagram of the three-dimensional scanning device (excluding the three-dimensional scanning container) in Embodiment 2 of this utility model from another angle.

[0052] Figure 17 This is a schematic diagram of a three-dimensional scanning container (inverted) in Embodiment 2 of this utility model.

[0053] Figure 18This is a schematic diagram of the second structure of the three-dimensional scanning device in Embodiment 2 of this utility model.

[0054] Figure 19 This is a schematic diagram of the application structure of the scanning system used for BNCT irradiation dose measurement in Embodiment 2 of this utility model.

[0055] In the diagram: 1. Device base plate, 11. Leveling device, 12. Base plate handle, 13. Container positioning groove, 14. Container positioning pin, 15. Container positioning sleeve, 16. X-axis level, 17. Y-axis level.

[0056] 2. 3D scanning container; 21. Container handle; 22. Crosshair center line; 23. Horizontal scale; 24. Vertical scale; 25. Conical positioning pin.

[0057] 3. External three-dimensional modular transmission mechanism; 4. Detector assembly;

[0058] 5. X-axis module; 51. X-axis slide rail; 52. X-axis slider; 53. X-axis servo motor; 54. X-axis integrated drive controller; 55. X-axis built-in lead screw; 56. X-axis connecting plate.

[0059] 6. Y-axis module; 60. Y-axis sliding guide bracket; 61. Y-axis slide rail; 62. Y-axis slider; 63. Y-axis servo motor; 64. Y-axis integrated drive controller; 65. Y-axis built-in lead screw.

[0060] 7. Z-axis module; 70. Z-axis sliding guide bracket; 71. Z-axis slide rail; 72. Z-axis slider; 73. Z-axis servo motor; 74. Z-axis integrated drive controller; 75. Z-axis built-in lead screw; 76. Z-axis support connecting plate.

[0061] 8. Detector;

[0062] 9. Detector fixture; 91. Detector fixture base; 92. Detector fixture body; 93. Detector clamping and positioning structure.

[0063] 10. Container quick-change positioning structure; 20. Integrated drive controller;

[0064] 40. Container mat; 41. Mat handle;

[0065] 80. Guide rail supports the column; 81. Fixed angle bracket;

[0066] 90. Accommodation space;

[0067] 100. Transition connection device; 101. Carbon fiber container pad; 102. Aluminum alloy adapter strip; 103. Positioning and locking component; 104. Slot; 105. Hook; 106. Locking hole; 107. Pad connection hole.

[0068] 30. Treatment bed; 301. Positioning hole;

[0069] 200. Treatment room; 50. Blocker; 60. Collimator. Detailed Implementation

[0070] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0071] Example 1:

[0072] exist Figure 1 , Figure 2 , Figure 3 In the illustrated embodiment, a scanning system for BNCT radiation dose measurement includes a mobile treatment bed 30 and a three-dimensional scanning device docked with a horizontally exiting neutron emission end. The three-dimensional scanning device includes a multi-size three-dimensional scanning container 2 that can be replaced as needed, and an external three-dimensional modular transmission mechanism 3 adapted to the multi-size three-dimensional scanning container for realizing three-dimensional movement of the detector. The three-dimensional scanning device also includes a device base plate 1, and the external three-dimensional modular transmission mechanism 3 is disposed independently of the three-dimensional scanning container 2 on the device base plate 1.

[0073] In use, the 3D scanning device can be placed directly on the treatment bed 30 and moved together with the treatment bed to achieve docking with the neutron emission end. The treatment bed can be moved in any way available in existing technology, preferably by a robotic arm to move the treatment bed to any position.

[0074] like Figure 19 As shown in the figure, in a specific application, the three-dimensional scanning device is placed on the treatment bed, and then the treatment bed and the three-dimensional scanning device on it are moved together to the neutron emission end of the collimator 60 by a robotic arm. It can be positioned arbitrarily so that the cross center line 22 on the three-dimensional scanning container 2 is aligned with the neutron emission end, and then the treatment operation can be realized.

[0075] In another embodiment, a transition connection device 100 may also be provided on the treatment bed 30, such as... Figure 4 As shown, the three-dimensional scanning device is placed on the transition connection device 100 to connect with the treatment bed 30.

[0076] Multiple container quick-change positioning structures 10 are provided on the device base plate 1 for installing and positioning the three-dimensional scanning container 2. An external three-dimensional modular transmission mechanism 3 for realizing the three-dimensional movement of the detector in X, Y, and Z directions is independently provided on the device base plate 1 around the container quick-change positioning structure 10. The external three-dimensional modular transmission mechanism 3 is independent of the three-dimensional scanning container 2 and is not connected to the three-dimensional scanning container 2. The detector assembly 4 is provided on the external three-dimensional modular transmission mechanism 3.

[0077] The external three-dimensional modular transmission mechanism 3 is integrated and independently set outside the three-dimensional scanning container 2. The external three-dimensional modular transmission mechanism 3 is fixedly set on the device base plate 1 outside the three-dimensional scanning container, while the three-dimensional scanning container 2 is replaceable and movable and positioned on the device base plate 1. The three-dimensional scanning container 2 and the device base plate are set with a movable positioning structure, which can replace three-dimensional scanning containers of different sizes and specifications as needed to achieve fast, accurate and efficient scanning.

[0078] like Figure 5 , Figure 6 As shown, the external three-dimensional modular transmission mechanism 3 is integrated with an X-axis module 5 for linear reciprocating motion of the detector along the X-axis, a Y-axis module 6 for linear reciprocating motion of the detector along the Y-axis, and a Z-axis module 7 for linear reciprocating motion of the detector along the Z-axis. The external three-dimensional modular transmission mechanism is integrated at one end of the device's base plate. When the water tank is placed on the multi-specification container quick-change positioning structure, the side of the water tank with the crosshair centerline is used for docking with the neutron emission end. Since the external three-dimensional modular transmission mechanism is integrated on the other side of the water tank, it ensures that the side with the crosshair centerline is free of any obstructions and will not affect the docking of the neutron emission end.

[0079] The X-axis module 5, Y-axis module 6 and Z-axis module 7 are respectively adopted as lead screw linear modules or linear motor modules.

[0080] In this embodiment, the X-axis module 5, Y-axis module 6, and Z-axis module 7 are lead screw-type linear modules, each including an integrated guide rail and a slider that slides along the guide rail. The module integrates a servo motor, a built-in lead screw, and a servo motor driver. The servo motor is connected to the built-in lead screw, which connects to the slider and drives the slider to reciprocate along the guide rail. The built-in lead screw is preferably a ball screw. Each of the X-axis module 5, Y-axis module 6, and Z-axis module 7 also integrates an integrated drive controller 20. Specifically, the integrated drive controller 20 includes an X-axis integrated drive controller 54, a Y-axis integrated drive controller 64, and a Z-axis integrated drive controller 74. Without external drivers and controller modules, only a Mini USB cable is needed to connect to the host computer to realize the movement of the detector 8. It can be used with containers of different sizes and specifications to achieve rapid and accurate scanning, improving the adaptability and versatility of the equipment, with a wide range of applications, and can meet the needs of different target area sizes and shapes. Moreover, the external three-dimensional module transmission mechanism 3 and other mechanical transmission mechanisms are all set outside the three-dimensional scanning container 2. Only the detector moves inside the container, and there are no metal parts inside the container, which can make the detector detect particles more accurately.

[0081] The external three-dimensional modular transmission mechanism 3 is located outside the three-dimensional scanning container 2. Except for the detector used for detection moving inside the three-dimensional scanning container 2, the external three-dimensional modular transmission mechanism 3 does not contact the interior of the three-dimensional scanning container 2. The interior of the three-dimensional scanning container 2 contains no metal materials, which not only increases the scanning space of the detector but also makes the detector's dose detection accuracy more precise. Since the motor, guide rail, and metal clamps with metal parts are all located outside the container, the problem of neutron activation generating particles affecting the detection accuracy is effectively avoided, and the accuracy of the detector's data acquisition is effectively improved.

[0082] The three-dimensional scanning container 2 includes various specifications. In this embodiment, the three-dimensional scanning container 2 is a three-dimensional scanning water tank, for example, a large water tank of 600mm×600mm×600mm (see...). Figure 2 It can also be a small water tank of 300mm×300mm×300mm (see...) Figure 12 It can also be designed into containers of various sizes according to the location and depth of the patient's lesions, and is not limited to water tank structures.

[0083] The preferred material for the 3D scanning container 2 is PMMA (polymethyl methacrylate). PMMA's high transparency, being a transparent polymer with a light transmittance of 92%, allows for fully transparent testing operations with high visibility, while also avoiding the impact of using metal materials on testing accuracy.

[0084] A container handle 21 is provided on the 3D scanning container 2 to facilitate moving and replacing the 3D scanning container 2.

[0085] A crosshair 22 is provided on the 3D scanning container 2. A horizontal scale 23 and a vertical scale 24 are also provided on the 3D scanning container 2 to facilitate the direct reading of the detector's position coordinates.

[0086] The 3D scanning container 2 contains water or other liquids needed for experiments to simulate the fluids inside human tissues.

[0087] The device base plate 1 is mainly used to support the weight of the three-dimensional scanning container 2. The material of the device base plate 1 is preferably 6061 aluminum, which is heat treated. The heat treatment process adopts the T6 heat treatment process of deformed aluminum alloy, that is, solution heat treatment, which has excellent mechanical properties and meets the requirements of neutron detection for material activation.

[0088] The device base plate 1 is provided with a plurality of leveling devices 11 for adjusting the horizontal and vertical directions of the device base plate 1. The leveling device 11 can be a leveling cup, but is not limited to a leveling cup, and can also be a leveling mechanism of other shapes.

[0089] To facilitate the movement of the device base plate 1, a base plate handle 12 is provided on the device base plate 1. When it is necessary to move the device base plate 1 manually, the device base plate 1 can be moved very easily through the base plate handle 12.

[0090] The multiple container quick-change positioning structures 10 are arranged in the same center. Each container quick-change positioning structure 10 includes a container positioning groove 13 and a container positioning pin 14 disposed inside the container positioning groove 13.

[0091] Specifically, a number of container positioning slots 13 are arranged concentrically on the base plate 1 of the device. Each container positioning slot 13 is equipped with three container positioning pins 14. The container positioning slots 13 and container positioning pins 14 not only facilitate the restriction of the degrees of freedom of the 3D scanning container 2, but also ensure the accuracy of the placement of the 3D scanning container 2. This facilitates accurate positioning after replacing the 3D scanning container 2, eliminating the need to reposition the 3D scanning container 2 after replacement. 3D scanning containers of the same specifications can be directly and quickly replaced.

[0092] The X-axis module 5 is a lead screw linear module, including an X-axis guide rail 51 integrated in a modular fashion, an X-axis slider 52 slidably mounted on the X-axis guide rail 51, an X-axis servo motor 53 driving the X-axis slider 51, and an X-axis built-in lead screw 55. The X-axis built-in lead screw 55 is a ball screw, such as... Figure 9As shown, the built-in X-axis lead screw 55 is connected to the X-axis slider 52. The X-axis servo motor 53 drives the built-in X-axis lead screw 55 to rotate, thereby causing the X-axis slider 52 to reciprocate on the X-axis slide rail 51. The X-axis module 5 also includes an integrated X-axis drive controller 54 for controlling the X-axis servo motor 53.

[0093] The Y-axis module 6 is a lead screw linear module, including an integrated Y-axis guide rail 61, a Y-axis slider 62 slidably mounted on the Y-axis guide rail 61, a Y-axis servo motor 63 driving the Y-axis slider 62, and a built-in Y-axis lead screw 65, which is a ball screw, such as... Figure 10 As shown, the Y-axis built-in lead screw 65 is connected to the Y-axis slider 62. The Y-axis servo motor 63 drives the Y-axis built-in lead screw 65 to rotate, thereby driving the Y-axis slider 62 to reciprocate along the Y-axis slide rail 61. The Y-axis module 6 also includes a Y-axis integrated drive controller 64 for controlling the Y-axis servo motor 63.

[0094] The Z-axis module 7 is a lead screw linear module, including an integrated Z-axis guide rail 71, a Z-axis slider 72 slidably mounted on the Z-axis guide rail 71, a Z-axis servo motor 73 driving the Z-axis slider 72, and a Z-axis integrated drive controller 74 for controlling the Z-axis servo motor 73. Figure 11 As shown, the Z-axis slide rail 74 is equipped with a built-in Z-axis lead screw 75, which is connected to the Z-axis slider 72. The Z-axis servo motor 73 drives the built-in Z-axis lead screw 75 to rotate, thereby driving the Z-axis slider 72 to reciprocate along the Z-axis slide rail 71.

[0095] The Y-axis module 6 is horizontally arranged at one end of the length direction of the device base plate 1. The X-axis module 5 is arranged on the Y-axis slider of the Y-axis module 6 through a Y-axis sliding guide bracket 60 and can slide along the Y-axis module 6. The X-axis module 6 extends above the multi-specification container quick-change positioning structure 10, that is, it extends and is arranged above the three-dimensional scanning container 2.

[0096] The Y-axis sliding guide bracket 60 is generally L-shaped. One side of the L-shape of the Y-axis sliding guide bracket 60 is vertically mounted on the Y-axis slider 62 of the Y-axis module 6 and can slide back and forth along the Y-axis module 6. The other side of the L-shape of the Y-axis sliding guide bracket 60 extends horizontally above the container positioning groove 13. The X-axis module 5 is horizontally mounted on the horizontal side of the L-shape of the Y-axis sliding guide bracket 60.

[0097] The Y-axis module 6 spans the width of the device base plate 1, and the X-axis module 5 spans the maximum container positioning groove 13.

[0098] The Z-axis module 7 is vertically mounted on the X-axis slider 52 of the X-axis module 5 via a Z-axis sliding guide bracket 70, and can slide back and forth along the X-axis module 5.

[0099] like Figure 6 As shown, the detector assembly 4 includes a detector clamp 9 and a detector 8. The detector clamp 9 is slidably mounted on the Z-axis module 7, and the detector 8 is clamped on the detector clamp 9 and extends vertically downward into the interior of the three-dimensional scanning container 2. The detector clamp 9 is preferably made of aluminum metal to hold and fix the detector 8 and prevent it from loosening.

[0100] like Figure 7 As shown, the detector fixture 9 has a T-shaped structure, consisting of a detector fixture base 91 and a detector fixture body 92. The detector fixture base 91 and the detector fixture body 92 can be manufactured as a single piece or as separate pieces. The detector fixture base 91 is fixed to the Z-axis slider of the Z-axis module via a connector and can reciprocate up and down along the Z-axis slide rail, thereby driving the detector 8 to move up and down in the vertical direction.

[0101] A detector clamping and positioning structure 93 is provided on the detector fixture body 92. The detector clamping and positioning structure 93 can be designed according to the specific structure of the detector, for example, it can be a clamping and positioning hole (see...). Figure 8 ), or it can be a clamping positioning groove (see Figure 7 The clamping and positioning structure 93 can also take various shapes, such as a clamping and positioning bracket, to meet the clamping and positioning needs of different detectors. In this embodiment, the detector clamping and positioning structure 93 adopts a clamping and positioning hole. The detector fixture body 92 can be made of flexible material to facilitate the clamping and positioning of the detector. The detector clamping and positioning structure 93 can clamp the detector 8 through its own elastic deformation, or it can achieve locking and positioning through locking components, such as a buckle structure or a clamp structure.

[0102] In this embodiment, the detector 8 is an ionization chamber used to determine the intensity of radiation by measuring the ionization current formed by ion pairs caused by ionization radiation under the influence of an electric field. The intensity of this current is proportional to the number of ion pairs collected, thus reflecting the intensity of the radiation.

[0103] Example 2:

[0104] exist Figure 13 , Figure 14 In the illustrated embodiment, a scanning system for BNCT radiation dose measurement has a technical solution that is basically the same as that in Embodiment 1, except that:

[0105] In this embodiment, the transition connection device can be a pad assembly, a snap-fit ​​assembly, or any quick-connect structure capable of achieving a fixed connection with the treatment bed. The transition connection device 100 is connected to the treatment bed 30 using an adjustable snap-fit ​​locking structure.

[0106] In this embodiment, the transition connection device 100 includes a carbon fiber container pad 101, an aluminum alloy adapter strip 102, and a positioning locking member 103.

[0107] A slot 104 is provided on the lower surface of the carbon fiber container pad 101, and the aluminum alloy adapter strip 102 is engaged inside the slot 104. Hooks 105 are provided at both ends of the aluminum alloy adapter strip 102, and locking holes 106 are provided on the hooks. The positioning locking element 103 is disposed within the locking holes. Pad connection holes 107 are provided on the surface of the aluminum alloy adapter strip 102 for fixing the carbon fiber container pad 101.

[0108] Several positioning holes 301 are provided on the edge of the treatment bed 30 to achieve locking and positioning in conjunction with the positioning locking member 103.

[0109] Three aluminum alloy adapter strips 102 are installed at the bottom of the carbon fiber container pad 101 and connected to the treatment bed 30. Three positioning locking elements 103 are installed on the side of the carbon fiber container pad 101 to connect the carbon fiber container pad to the side of the treatment bed, thus fixing the carbon fiber container pad to the treatment bed. At this time, the device support plate 1 is placed on the carbon fiber container pad 101 as a whole, and the three-dimensional scanning container is positioned on the device support plate, thus realizing the connection between the three-dimensional scanning container and the treatment bed. The positioning locking elements 102 can adjust the tightness of the fixation to ensure that the three-dimensional scanning container is stably placed on the treatment bed.

[0110] like Figure 19 As shown in the specific application, the treatment room 200 is equipped with a blocker 50, and a transition connection device 100 is connected to the treatment bed. The three-dimensional scanning device is placed on the carbon fiber container pad 101, and then the treatment bed and the three-dimensional scanning device on it are moved together to the neutron emission end of the collimator 60 by a robotic arm. It can be positioned arbitrarily so that the cross center line 22 on the three-dimensional scanning container 2 is aligned with the neutron emission end, and then the treatment operation can be realized.

[0111] In this embodiment, the container quick-change positioning structure 10 is a container positioning sleeve 15 set on the device base plate 1 for positioning multiple sizes of 3D scanning containers. The corresponding quick-connect positioning component at the bottom of the 3D scanning container adopts a conical positioning pin 25 (see...). Figure 17In use, positioning is achieved by 3D scanning the conical positioning pin 25 at the bottom of the container and engaging it with the corresponding positioning sleeve 11. The operation is very simple, and the positioning is not prone to tilting, wear, or deformation of the positioning pin. Three or four positioning sleeves can be provided for containers of the same size, or as needed.

[0112] In other embodiments, the container quick-change positioning structure 10 may also adopt other structures, such as grooves and protrusions.

[0113] In this embodiment, four container positioning sleeves 15 of each specification are provided. The four container positioning sleeves 15 restrict the degree of freedom of the three-dimensional scanning container 2, while ensuring the accuracy of the placement of the three-dimensional scanning container 2. This facilitates accurate positioning after replacing the three-dimensional scanning container 2, eliminating the need to reposition the three-dimensional scanning container 2 after replacement. Three-dimensional scanning containers of the same specification can be directly and quickly replaced.

[0114] To achieve level adjustment, a leveling device 11 is installed on the base plate 1 of the device. The leveling device 11 can use an X-axis level 16 and a Y-axis level 17 to automatically correct the level. The level of the three-dimensional scanning container is adjusted more conveniently and accurately through the level. Since the three-dimensional scanning container 2 is designed to be fixed on the treatment bed, the level of the three-dimensional scanning container can be adjusted more accurately by adjusting the angle of the treatment bed by adjusting the robotic arm.

[0115] like Figure 15 , Figure 16 As shown, the 3D scanning container 2 and the device base plate 1 are connected by a movable positioning structure with a positioning pin and a container positioning sleeve. Different sizes and specifications of 3D scanning containers can be replaced as needed to achieve fast, accurate and efficient scanning.

[0116] The separate external three-dimensional module transmission mechanism is integrated on the device base plate 1. When the three-dimensional scanning container 2 is placed on the multi-specification container positioning sleeve 15, the side of the three-dimensional scanning container 2 with the cross center line 22 is used to dock with the neutron emission end. Since the separate external three-dimensional module transmission mechanism is integrated on three sides of the three-dimensional scanning container, the side with the cross center line has no obstacles, so it will not affect the docking of the neutron emission end.

[0117] The X-axis module motion guide rail 5, Y-axis module motion guide rail 6, and Z-axis module motion guide rail 7 are respectively adopted as lead screw linear modules or linear motor modules. Their specific structures are basically the same as those in Embodiment 1.

[0118] The three-dimensional scanning container 2 includes various specifications. In this embodiment, the three-dimensional scanning container 2 is a three-dimensional scanning water tank, for example, a large water tank of 300mm×300mm×600mm (see...). Figure 14 It can also be a small water tank of 200mm×200mm×200mm (see...) Figure 18 Furthermore, it can be designed into containers of various sizes according to the location and depth of the patient's lesions, and is not limited to a water tank structure. The other structural contents of the 3D scanning container 2 are basically the same as those in Example 1.

[0119] Instead of a handle, a container pad 40 is installed below the 3D scanning container 2. A handle 41 is installed on the container pad 40 to facilitate the handling of the 3D scanning container. The container pad 40 is connected to the 3D scanning container 2 by screws, possesses excellent mechanical properties, and meets the requirements for material activation in neutron detection.

[0120] The Y-axis module motion guide rail 6 is horizontally positioned above the device base plate 1. Specifically, two sets of Y-axis module motion guide rails 6 are arranged horizontally and parallel to each other. Each set of Y-axis module motion guide rails 6 is mounted on the device base plate 1 via two sets of guide rail support columns 80. The guide rail support columns 80 are vertically positioned and fixedly connected to the device base plate 1 via fixing angle brackets 81. The two sets of Y-axis module motion guide rails 6 form a accommodating space 90 for the three-dimensional scanning container.

[0121] The X-axis module motion guide rail 5 is connected to the Y-axis slider 62 of the Y-axis module motion guide rail 6 via two X-axis connecting plates 56, and can slide along the two sets of Y-axis module motion guide rails 6. The X-axis module motion guide rail 6 can slide at any position on the Y-axis module motion guide rail and can move to any position above the three-dimensional scanning container 2.

[0122] The Z-axis module motion guide rail 7 is vertically mounted on the X-axis slider 52 of the X-axis module motion guide rail 5 via a Z-axis support connecting plate 76, and can slide back and forth along the X-axis module motion guide rail 5.

[0123] In use, the detector can be slidably mounted on the Z-axis module motion guide rail 7 via the detector clamp, and the detector can extend vertically downwards into the interior of the 3D scanning container 2. The detector clamp is preferably made of aluminum metal to hold and fix the detector, preventing it from loosening. The detector can be an ionization chamber, used to determine the intensity of radiation by measuring the ionization current formed by ion pairs caused by ionization radiation under the action of an electric field. The intensity of this current is proportional to the number of ion pairs collected, thus reflecting the intensity of the radiation.

[0124] The 3D scanning container 2 is connected to the container pad 40 and is directly positioned on the container positioning sleeve 15 on the device base plate 1 by the conical positioning pin 25. When in use, the 3D scanning container can be moved directly by the pad handle 41 on the container pad 40, avoiding deformation of the container caused by repeated handling. Moreover, the device base plate 1 can be directly installed on the treatment bed for use.

[0125] The scanning system used for BNCT irradiation dose measurement in the above embodiments uses non-steel and non-stainless steel components, which can effectively prevent neutron activation problems.

[0126] The 3D scanning container is directly positioned on the device's base plate, which connects to the treatment bed, allowing for free positioning.

[0127] The three-dimensional scanning container can be equipped with various types of detectors, such as gamma detectors and neutron detectors.

[0128] This scanning system for BNCT radiation dose measurement combines containers of different sizes with a single mechanical motion structure, solving the application challenge of multi-specification applicable 3D scanning radiotherapy containers. First, the control module of the entire device is integrated, eliminating the need for external power supplies and control modules. Second, the 3D scanning container contains no metal materials except for the detector, increasing the accuracy of 3D dose measurement and expanding the detector's spatial scanning range. Third, the 3D scanning container can be configured with containers of different sizes, adapting to the lesion location and depth requirements of different patients. Fourth, compared to previous compact container designs, the 3D module's mechanical structure is completely independent of the container, representing a novel three-axis motion structure.

[0129] The 3D scanning container can achieve linear reciprocating motion in three directions: X, Y, and Z. It can precisely move to the coordinate position according to the programmed coordinates. The mechanical transmission structure of the 3D scanning container is not fixedly connected to the container, allowing for separation of the container and the motion guide rail. The same mechanical transmission structure of the 3D scanning container can be used with containers of different sizes to detect doses. The mechanical transmission structure of the 3D scanning container adopts a more precise ball screw drive method, driven by a servo motor, achieving a control accuracy of ±0.001mm. Furthermore, the controller and driver are integrated into a single module, eliminating the need for external modules. The detector has a wider scanning detection space within the container. This increases the accuracy of the detector's 3D dose measurement, making the detector's results closer to the actual results. This is because in BNCT, the beam exiting the collimator is neutron, and the presence of stainless steel, carbon steel, or other metals in the container can affect the accuracy of the results.

[0130] A container positioning groove is used to achieve circumferential positioning of the 3D scanning container, and a container positioning pin is used to position the 3D scanning container, ensuring that it will be placed in the same position every time, without having to reposition it each time.

[0131] The conical positioning pins used for high-precision positioning ensure a repeatability accuracy of ≤0.003 mm for each positioning. The 3D scanning container is placed on the treatment bed, which has greater freedom of movement in three dimensions, providing more flexibility for the placement of the 3D scanning container.

[0132] The scanning system for BNCT irradiation dose measurement described in the above embodiments works in conjunction with a treatment bed that can be moved and positioned arbitrarily and a three-dimensional scanning device on it. Since the three-dimensional scanning device can dock with the horizontally emitting neutron beam, the scanning system has a higher degree of freedom of movement in the three-dimensional direction and more flexibility. It can meet the needs of different position adjustments and overall movement, and can achieve arbitrary docking for neutron emission ends at different positions.

[0133] By employing a single external 3D modular transmission mechanism, the device achieves universal design, allowing it to accommodate 3D scanning containers of different sizes and specifications. This enhances the device's adaptability, enabling it to meet the needs of different target area sizes and shapes. It better adapts to the requirements of different organs and treatment techniques, ensuring that each patient receives precise and effective dose distribution during radiotherapy, thereby improving treatment efficacy and safety. The main solution addresses the problem of integrated design of existing water tanks and mechanical devices by providing an externally fixed mechanical guide module that can be replaced with containers of different sizes, enabling a new type of scanning container that is fast, accurate, and efficient.

[0134] Different container sizes are required for various purposes. Firstly, there are requirements regarding target size and shape: different organs and tumor locations have different size and shape requirements. For example, when treating head and neck tumors, the target area is usually small and complex in shape, requiring high-precision dose distribution measurement, which may necessitate the use of small-sized containers. Conversely, when treating large-area tumors in the abdomen or pelvis, larger containers are needed to accurately simulate and measure the dose distribution across the large field.

[0135] Second, depth dose measurement requirements: The depth and location of an organ affect the measurement of dose distribution. Deep organs such as the liver and lungs require larger containers to measure depth dose distribution and scattering effects. For superficial organs such as the skin or superficial tumors, smaller containers may be more suitable.

[0136] Thirdly, there are requirements for measurements in special areas: Some special areas, such as the breast and limbs, may require containers of specific sizes and shapes for measurement due to their location and treatment requirements, in order to obtain accurate dose distribution data.

[0137] Fourth, there are requirements for children and adults: Children and adults have significantly different organ sizes. Treatment for children may require smaller containers to simulate and measure the appropriate dose distribution, while treatment for adults requires larger containers.

[0138] The scanning system for BNCT irradiation dose measurement in the above embodiments can be placed directly on the treatment bed for immediate use. The treatment bed has a higher degree of freedom of movement in three dimensions, which also provides more flexibility for the placement of the three-dimensional scanning container.

[0139] In use, the circumferential positioning of the 3D scanning container can be achieved by using the container positioning slot, and the placement position of the 3D scanning container can be achieved by using the container positioning pin, ensuring that it will be placed in the same position every time, without having to reposition it each time.

[0140] Alternatively, high-precision conical positioning pins can be used, ensuring a repeatability accuracy of ≤0.003 mm for each positioning. A variety of 3D scanning containers of different sizes can better adapt to the needs of different organs and treatment techniques, ensuring that each patient receives accurate and effective dose distribution during radiotherapy, thereby improving treatment efficacy and safety. Different container sizes are required to meet the diverse needs of different patients. This scanning system for BNCT irradiation dose measurement can meet the placement requirements of various container sizes, enabling the use of a single external fixed mechanical guide module to satisfy the measurement requirements of different container sizes. This achieves the universal design requirements of the 3D scanning container, reducing costs while meeting diverse measurement requirements.

[0141] The specific embodiments / examples described above are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein, all of which are within the protection scope of this utility model.

Claims

1. A scanning system for BNCT irradiation dose measurement, characterized by: The utility model relates to a three -dimensional scanning device that includes mobile treatment bed (30) and with horizontal neutron emission end any side dimension butt -joint and height space any adjustment, the three -dimensional scanning device more replacement setting on treatment bed (30), the three -dimensional scanning device includes three -dimensional scanning container (2) and the three -dimensional scanning container of adaptation multi -specification for realizing detector three -dimensional movement external three -dimensional modular transmission mechanism (3), the three -dimensional scanning device still includes a device bottom plate (1), external three -dimensional modular transmission mechanism (3) is arranged in device bottom plate (1) independently from three -dimensional scanning container (2), the three -dimensional scanning container (2) adopts multi -specification replacement, external three -dimensional modular transmission mechanism (3) is integrated with make detector (8) along X -axis, Y -axis, Z -axis do linear reciprocating motion X -axis module (5), Y -axis module (6) and Z -axis module (7) set up.

2. The scanning system for BNCT irradiation dosimetry according to claim 1, characterized in that: The three -dimensional scanning device is connected with the treatment bed (30) through a transition connecting device (100) and moves with the treatment bed, the transition connecting device (100) is connected with the treatment bed (30) using an adjustable clamping locking structure.

3. The scanning system for BNCT irradiation dosimetry according to claim 2, characterized in that: The transition connecting device (100) includes a carbon fiber container pad plate (101), an aluminum alloy adapter strip (102) arranged on the bottom surface of the carbon fiber container pad plate (101), and a positioning locking piece (103).

4. The scanning system for BNCT irradiation dosimetry according to claim 3, characterized in that: The clamping locking structure includes a clamping hook (105) provided with a locking hole at both ends of the aluminum alloy adapter strip (102), the positioning locking piece (103) is arranged in the locking hole, and a plurality of positioning holes (301) are arranged on both sides of the treatment bed (30), the positioning locking piece (103) is matched with the positioning holes to realize locking.

5. The scanning system for BNCT irradiation dosimetry according to claim 1, characterized in that: A plurality of container quick-change positioning structures (10) for realizing the installation and positioning of the three-dimensional scanning container (2) are arranged on the device bottom plate (1), the plurality of container quick-change positioning structures (10) are arranged concentrically, the container quick-change positioning structure (10) includes a container positioning groove (13) and a container positioning pin (14) arranged in the container positioning groove (13), and corresponding positioning holes are arranged on the bottom of the three-dimensional scanning container (2); alternatively, the container quick-change positioning structure (10) includes a plurality of groups of multi-specification container positioning sleeves (15) or tapered positioning pins (25), and corresponding tapered positioning pins (25) or container positioning sleeves (15) are arranged on the three-dimensional scanning container (2).

6. The scanning system for BNCT irradiation dosimetry according to any one of claims 1 to 4, characterized in that: The external three-dimensional modular transmission mechanism (3) is a cantilever structure or a frame structure.

7. The scanning system for BNCT irradiation dosimetry according to claim 6, characterized in that: The X-axis module (5), the Y-axis module (6), and the Z-axis module (7) respectively adopt a screw rod type linear module or a linear motor module, and an integrated drive controller (20) is integrally arranged on each of the X-axis module (5), the Y-axis module (6), and the Z-axis module (7).

8. The scanning system for BNCT irradiation dosimetry according to any one of claims 1 to 4, characterized in that: The detector (8) is arranged on the external three-dimensional modular transmission mechanism (3) through a detector clamp (9), and a detector clamping and positioning structure (93) is arranged on the detector clamp (9).

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