Verification device and positioning system for a boron neutron capture therapy system

Abstract

This application relates to a calibration device and positioning system for a boron neutron capture therapy system. The calibration device is used to verify the placement of the treatment table in the boron neutron capture therapy system. In the calibration device, the base includes a bearing surface and a mounting surface opposite to the bearing surface, and all areas of the mounting surface are located on the same plane. The main structure includes a main body and an auxiliary body; the bottom of the main body is mounted on the bearing surface; the auxiliary body is mounted on the main body; the surface of the auxiliary body is provided with a first scale line, a second scale line, and a third scale line; the auxiliary body includes a reference line, the reference line and the first scale line are located on a first plane, the reference line and the second scale line are located on a second plane, and the plane where the third scale line is located is a third plane; the first plane, the second plane, and the third plane are all perpendicular to each other; the main structure has a first state, in which at least two of the first plane, the second plane, and the third plane form acute angles with the plane where the mounting surface is located.

Description

Technical Field

[0001] This application relates to the field of radiotherapy positioning technology, and in particular to a calibration device and positioning system for a boron neutron capture therapy system. Background Technology

[0002] Boron neutron capture therapy (BNCT) is a novel radiotherapy technique. Unlike traditional linear accelerators or proton / heavy ion radiotherapy equipment, BNCT equipment uses a fixed neutron beam, making multi-angle irradiation impossible through gantry rotation. Before treatment, the patient is positioned sitting or lying on the treatment bed; the tumor target is moved to a predetermined position on the beam centerline by shifting the treatment bed. The accuracy of the treatment bed's positioning plays a decisive role in the treatment outcome. Therefore, a calibration device is urgently needed to verify the accuracy of the treatment bed's positioning. Summary of the Invention

[0003] This application provides a calibration device and positioning system for a boron neutron capture therapy system.

[0004] According to a first aspect of the embodiments of this application, a verification device for a boron neutron capture therapy system is provided, used to verify the placement of the treatment table of the boron neutron capture therapy system, the verification device comprising: The base includes a bearing surface and a mounting surface opposite to the bearing surface, all areas of the mounting surface being located on the same plane; The main structure includes a main body and an auxiliary body; the bottom of the main body is mounted on the bearing surface; the auxiliary body is mounted on the main body; the surface of the auxiliary body is provided with a first scale line, a second scale line, and a third scale line; the auxiliary body includes a reference line, the reference line and the first scale line are located on a first plane, the reference line and the second scale line are located on a second plane, and the plane where the third scale line is located is a third plane; the first plane, the second plane, and the third plane are all perpendicular to each other; the main structure has a first state, in which at least two of the first plane, the second plane, and the third plane form acute angles with the plane where the mounting surface is located.

[0005] In one embodiment, the reference line is the axis of the auxiliary part.

[0006] In one embodiment, in the first state, the included angles between the first plane, the second plane, and the third plane and the plane containing the mounting surface are all acute angles.

[0007] In one embodiment, the auxiliary portion is at least partially located on the side of the main body, and the auxiliary portion extends from the end connected to the main body in a direction away from the main body; the third plane is located on the side of the main body.

[0008] In one embodiment, the main body is detachably connected to the base; the relative position between the main body and the base can be changed so that the main structure changes from the first state to a switching state; the angle between the plane corresponding to the switching state and the plane where the mounting surface is located is an acute angle, and the position of the plane corresponding to the switching state is different from the position of the plane corresponding to the first state.

[0009] In one embodiment, the verification device further includes a connector for connecting the main body to the base, thereby fixing the main body structure in the first state or the switching state.

[0010] In one embodiment, the switching state includes a second state, and the plane corresponding to the second state is a third plane; The main body portion and the bearing surface have at least one first groove group on the bottom surface and at least one first protrusion group on the bearing surface; each first groove group has multiple first grooves arranged in parallel, and each first protrusion group includes multiple first protrusions arranged in parallel; one first protrusion group mates with one first groove group; in the mating first groove group and first protrusion group, the number of first protrusions is less than the number of first grooves, and each first protrusion is located in one first groove; the first groove that mates with the first protrusion in the first state and the first groove that mates with the first protrusion in the second state are not all the same.

[0011] In one embodiment, the bottom surface of the main body that mates with the bearing surface and the bearing surface are provided with two first groove groups, and the other is provided with two first protrusion groups. The two first protrusion groups are spaced apart in the extending direction of the first protrusions; one first protrusion group mates with one first groove group. In the first state and the second state, each first groove group cooperates with the corresponding first protrusion group.

[0012] In one embodiment, the switching state includes a third state, and the plane corresponding to the third state is the first plane; One of the bottom surface of the main body that mates with the bearing surface and the bearing surface is provided with at least one second groove group, and the other is provided with at least one second protrusion group; each second groove group is provided with a plurality of second grooves arranged in parallel, and each second protrusion group is provided with a plurality of second protrusions arranged in parallel; one second protrusion group mates with one second groove group; in the mating second groove group and the second protrusion group, the number of second protrusions is less than the number of second grooves, and each second protrusion is located in one second groove; the second groove that mates with the second protrusion in the first state and the second groove that mates with the second protrusion in the third state are not all the same.

[0013] In one embodiment, the bottom surface of the main body that mates with the bearing surface and the bearing surface are provided with two second groove groups, and the other is provided with two second protrusion groups. The two second protrusion groups are spaced apart in the extending direction of the second protrusions; one second protrusion group mates with one second groove group. In the first state and the third state, each second groove group cooperates with the corresponding second protrusion group.

[0014] In one embodiment, the bearing surface is a part of a sphere, the bottom surface of the main body that mates with the bearing surface is a part of a sphere, the radius of the sphere containing the bearing surface is the same as the radius of the sphere containing the bottom surface of the main body that mates with the bearing surface, and the line connecting the center of the sphere containing the bearing surface and the center of the sphere containing the bottom surface of the main body that mates with the bearing surface is parallel or perpendicular to the first plane.

[0015] In one embodiment, the main body includes a first part and a second part, the second part being located at the end of the first part away from the base, and the auxiliary part being mounted on the second part; the second part is rotatable relative to the first part.

[0016] In one embodiment, the rotation axis of the second part is parallel or perpendicular to the first plane.

[0017] In one embodiment, the first part is provided with at least one third protrusion group, and the second part is provided with at least one fourth protrusion group. Each third protrusion group includes a plurality of adjacently arranged third protrusions, and each fourth protrusion group includes a plurality of adjacently arranged fourth protrusions. A third protrusion group and a fourth protrusion group cooperate. In the mutually cooperating third protrusion group and fourth protrusion group, the third protrusions mesh with the fourth protrusions, and the number of third protrusions is different from the number of fourth protrusions.

[0018] In one embodiment, the third protrusion group is disposed on the surface of the first part facing the second part, and the fourth protrusion group is disposed on the surface of the second part facing the first part; or... One of the first part and the second part is provided with a cavity, and the other is provided with a protrusion, the protrusion being located inside the cavity; one of the third protrusion group and the fourth protrusion group is provided on the inner surface of the cavity, and the other is provided on the outer surface of the protrusion.

[0019] In one embodiment, the main structure includes a plurality of auxiliary parts, which are divided into a plurality of auxiliary part groups; each auxiliary part group includes at least one auxiliary part; and reference lines of the auxiliary parts of at least two of the auxiliary part groups intersect.

[0020] In one embodiment, the main structure includes a plurality of auxiliary parts, which are divided into a plurality of auxiliary part groups; each auxiliary part group includes at least one auxiliary part; and the reference lines of the auxiliary parts of at least two of the auxiliary part groups are parallel to each other.

[0021] In one embodiment, each of the auxiliary part groups includes two auxiliary parts, the two auxiliary parts of the same auxiliary part group are located on opposite sides of the main body, and the reference lines of the two auxiliary parts are on the same straight line.

[0022] In one embodiment, the auxiliary portion is at least partially located on the side of the main body, and the auxiliary portion extends from the end connected to the main body in a direction away from the main body; the third plane is located on the side of the main body; in the direction away from the main body, both the first scale line and the second scale line extend from the end of the auxiliary portion connected to the main body in a direction away from the main body; In the direction away from the main body, the distance between the axis of the auxiliary part and the first scale line in the direction perpendicular to the axis gradually decreases, and the distance between the axis of the auxiliary part and the second scale line in the direction perpendicular to the axis gradually decreases.

[0023] In one embodiment, the auxiliary portion is at least partially located on the side of the main body; the auxiliary portion is provided with a plurality of third scale lines, which are arranged in a direction away from the main body; The surface of the auxiliary part is also provided with a plurality of indicator lines located between two adjacent third scale lines, and the plurality of indicator lines between two adjacent third scale lines are evenly spaced in the direction away from the main body.

[0024] According to a second aspect of the embodiments of this application, a positioning system for a boron neutron capture therapy system is provided, including a treatment table, a light positioning device, an imaging positioning device, a driving device, and the aforementioned calibration device; the base of the calibration device is mounted on the treatment table, and the mounting surface of the base abuts against the treatment table; the imaging positioning device is configured to acquire an image of the calibration device at its current position, and the driving device is configured to move the treatment table according to the current position information of the calibration device determined based on the image and preset position information.

[0025] In one embodiment, the light positioning device includes a first light emitter, a second light emitter, and a third light emitter; the first light emitter emits a first visible light, the second light emitter emits a second visible light, and the third light emitter emits a third visible light; the third visible light is used in conjunction with the third scale line to verify the positioning accuracy of the treatment table in a first direction; the first visible light is used in conjunction with the first scale line to verify the positioning accuracy of the treatment table in a second direction; the second visible light is used in conjunction with the second scale line to verify the positioning accuracy of the treatment table in a third direction; the first direction, the second direction, and the third direction are all perpendicular to each other.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the verification device provided in one embodiment of this application when it is installed on a treatment table; Figure 2 for Figure 1 An exploded view of the structure shown; Figure 3 for Figure 1 A cross-sectional view of the structure described; Figure 4 This is a three-dimensional structural schematic diagram of an auxiliary part provided in an embodiment of this application; Figure 5 This is a three-dimensional structural schematic diagram of the auxiliary part provided in another embodiment of this application; Figure 6This is a partial structural schematic diagram of the boron neutron capture therapy system provided in one embodiment of this application in one state; Figure 7 This is a three-dimensional structural diagram of the main body and mounting base of the verification device provided in one embodiment of this application; Figure 8 This is a three-dimensional structural diagram of the main body and mounting base of the verification device provided in one embodiment of this application from another perspective; Figure 9 This is a three-dimensional structural diagram of the second part of the verification device provided in an embodiment of this application; Figure 10 This is a partial structural diagram of the boron neutron capture therapy system provided in one embodiment of this application in another state; Figure 11 This is a partial structural diagram of the boron neutron capture therapy system provided in one embodiment of this application in another state. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The manner described in the following exemplary embodiments does not represent all manner consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0030] This application provides a calibration device for a boron neutron capture therapy system, used to verify the placement of the treatment table in the boron neutron capture therapy system. For example... Figures 1 to 3 As shown, the verification device includes a base 10 and a main structure 20.

[0031] The base 10 is used for mounting on the treatment table 80 of the boron neutron capture therapy system. The base 10 includes a bearing surface 101 and a mounting surface 104 opposite to the bearing surface 101, all areas of the mounting surface 104 being located on the same plane. The mounting surface 104 is used to cooperate with the treatment table 80 so that the base 10 is mounted on the treatment table 80. The main structure 20 includes a main body 30 and an auxiliary part 40. The bottom of the main body 30 is mounted on the bearing surface 101; the auxiliary part 40 is mounted on the main body 30. Figure 4 and Figure 5As shown, the surface of the auxiliary part 40 is provided with a first scale line 41, a second scale line 42, and a third scale line 43; the auxiliary part 40 includes a reference line 44, which is located on a first plane along with the first scale line 41, and on a second plane along with the second scale line 42. The plane containing the third scale line 43 is a third plane; the first plane, the second plane, and the third plane are all perpendicular to each other. The main structure 20 has a first state, in which at least two of the first plane, the second plane, and the third plane form acute angles with the plane containing the mounting surface 104.

[0032] The verification device provided in this application embodiment has an acute angle between at least two of the first, second, and third planes and the plane containing the mounting surface 104 in the first state. This means the verification device can introduce at least one angular deflection in the first state. Since the first, second, and third planes are all perpendicular to each other, the first scale line 41, second scale line 42, and third scale line 43 of the main structure 20 can be used to verify the placement of the treatment table in three mutually perpendicular directions. Therefore, the verification device provided in this application embodiment, by introducing at least one angular deflection, can more realistically simulate the deflection of the treatment table in a clinical setting, thus improving the reliability of the treatment table placement verification.

[0033] In one embodiment, such as Figure 1 As shown, the treatment table 80 includes a support plate 81 and a locking strip assembly 82. The locking strip assembly 82 includes a positioning locking strip 83 and a positioning pin 84 disposed on the positioning locking strip 83. The positioning locking strip 83 has a standard size and repeatability accuracy, and is used to achieve locking and positioning with the support plate 81. The positioning pin 84 is used to achieve locking and positioning with the base 10. In some embodiments, the surface of the base 10 opposite to the bearing surface 101 is planar, and a portion of this surface contacts the top surface of the positioning locking strip 83. The portion of this surface that contacts the positioning locking strip 83 is the mounting surface 104. In another embodiment, the surface of the base 10 opposite to the bearing surface 101 is provided with a strip-shaped groove, and the positioning locking strip 83 is located in the strip-shaped groove; the area of ​​the surface of the base 10 opposite to the bearing surface 101 that is not provided with the strip-shaped groove is the mounting surface 104, and the mounting surface 104 contacts the support plate 81.

[0034] In one embodiment, nylon blocks are provided below both ends of the positioning strip 83, and the nylon blocks are provided with positioning holes. The two nylon blocks and the positioning strip 83 form a U-shaped interlocking structure. In use, the positioning strip 83 is horizontally positioned above the treatment bed board, and the two nylon blocks cooperate with the two sides of the treatment bed board; at the same time, the positioning holes of the blocks cooperate with the positioning protrusions on the treatment table 80 to limit the movement, ensuring that the base 10 does not move relative to the treatment table 80.

[0035] In one embodiment, such as Figure 1 and Figure 2 As shown, the calibration device is also fixed to the treatment table 80 via a pull claw assembly 90; the pull claw assembly 90 includes a pull claw body 91 and a locking screw handle 92 disposed on the pull claw body 91. A locking strip mounting hole is provided on the pull claw body 91, and a shock-absorbing strip 93 is provided inside the pull claw body 91. During use, it is used to engage with the lower surface of the treatment table 80 for positioning and to provide shock absorption, ensuring the stability of the entire device during use. The pull claw body 91 is arranged laterally in a U-shape.

[0036] This application also provides a positioning system for a boron neutron capture therapy system. For example... Figure 2 and 6 As shown, the positioning system includes a treatment table 80, a light positioning device, an imaging positioning device, a driving device, and a calibration device. The base 10 of the calibration device is mounted on the treatment table 80, and the mounting surface 104 of the base 10 abuts against the treatment table 80. The imaging positioning device is configured to acquire an image of the calibration device at its current position, and the driving device is configured to move the treatment table based on the current position information of the calibration device determined from the image and preset position information of the treatment table.

[0037] In one embodiment, the light positioning device includes a first light emitter 51, a second light emitter 52, and a third light emitter 53; the first light emitter 51 emits a first visible light 511, the second light emitter 52 emits a second visible light 521, and the third light emitter 53 emits a third visible light 531; the third visible light 531 is used in conjunction with the third scale line 43 to verify the positioning of the treatment table 80 in the first direction X; the first visible light 511 is used in conjunction with the first scale line 41 to verify the positioning of the treatment table 80 in the second direction Y; the second visible light 521 is used in conjunction with the second scale line 42 to verify the positioning of the treatment table 80 in the third direction Z; the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0038] In some embodiments, the plane containing the first direction X and the second direction Y is a horizontal plane, and the third direction Z is a vertical direction. The plane containing the mounting surface 104 is parallel to the horizontal plane.

[0039] This application also provides a verification method for a boron neutron capture therapy system, used in the aforementioned positioning system. For example... Figure 6As shown, in the first direction X, the end face of the beam port 60 of the boron neutron capture therapy system and the first light emitter 51 are located on opposite sides of the main structure 20.

[0040] The verification method includes the following steps 110 to 130.

[0041] In step 110, the imaging positioning device acquires an image of the verification device and determines the current position information of the verification device based on the image.

[0042] In step 120, based on the preset position information of the verification device included in the treatment plan and the current position information, the motion information corresponding to the driving device is determined, and the driving device is made to move the treatment table according to the motion information.

[0043] In one embodiment, the driving device may include a robotic arm connected to the treatment table, which can drive the treatment table to move upward in a first direction, a second direction, and a third direction, and can also drive the treatment table to rotate.

[0044] In one embodiment, the driving device can move the treatment table in the first direction X, the second direction Y, and the third direction Z, and can also rotate the treatment table around the first direction X, the second direction Y, and the third direction Z.

[0045] In one embodiment, the treatment table may be a treatment bed or a treatment chair. When the treatment table is a treatment bed, the patient lies on the treatment bed during treatment; when the treatment table is a treatment chair, the patient sits on the treatment chair during treatment.

[0046] In step 130, the positioning of the treatment table is determined to be accurate based on the positional relationship between the first visible light and the first target line, the positional relationship between the second visible light and the second target line, and the positional relationship between the third visible light and the third target line.

[0047] Wherein, the first target line is the first scale line in the first scale line that corresponds to the preset position information, the second target line is the second scale line in the second scale line that corresponds to the preset position information, and the third target line is the third scale line in the third scale line that corresponds to the preset position information.

[0048] Specifically, the positioning of the treatment table can be determined to be accurate when the first visible light is transmitted to the first target line, the second visible light is transmitted to the second target line, and the third visible light is transmitted to the third target line.

[0049] In one embodiment, an operator can visually determine whether a first visible light is projected onto a first target line, whether a second visible light is projected onto a second target line, and whether a third visible light is projected onto a third target line. In another embodiment, an image can be captured by a camera device, and the controller can identify the image to make the determination.

[0050] In one embodiment, the first light emitter 51, the second light emitter 52, and the third light emitter 53 are all laser emitters, emitting laser light. In some embodiments, the first visible light 511, the second visible light 521, and the third visible light 531 are all planar lasers. The centerline 61 of the irradiation beam emitted by the beam port 60 may be located on the plane where the first visible light 511 is located.

[0051] In one embodiment, such as Figure 3 As shown, the verification device further includes a mounting part 36 and a plurality of metal balls 37, which are mounted on the mounting part 36. The metal balls 37 can serve as a reference for image registration. In step 110 above, the current position information of the verification device can be determined based on the positions of the plurality of metal balls 37 in the image.

[0052] Furthermore, the verification device includes five metal balls 37, of which four metal balls are distributed at the four non-coplanar vertices of the virtual cube, and the other metal ball 37 is located at the body center of the virtual cube.

[0053] In one embodiment, in the verification device, the auxiliary part 40 has a rotationally symmetric structure, and the reference line 44 of the auxiliary part 40 is the axis of the auxiliary part 40. This facilitates determining the position of the reference line 44 of the auxiliary part 40.

[0054] In one embodiment, such as Figures 1 to 3 As shown, the base 10 includes a mounting base 11 and a mounting plate 12, with the mounting base 11 mounted on the mounting plate 12. The bearing surface 101 is the surface of the mounting base 11 away from the mounting plate 12, and the mounting surface 104 is located on the surface of the mounting plate 12 away from the mounting base 11.

[0055] In one embodiment, the mounting base 11 and the mounting plate 12 are detachably connected. For example... Figures 1 to 3 As shown, the mounting base 11 is provided with a mounting hole 103, and the base 10 cooperates with the mounting hole 103 to connect the mounting base 11 and the mounting plate 12. The mounting base 11 is provided with a protrusion 111 on the side away from the main body 30, and the protrusion 111 is confined within the mounting hole 103.

[0056] In one embodiment, such as Figures 1 to 3As shown, the mounting plate 12 has two mounting holes 103. With this configuration, when the protrusion 111 mates with different mounting holes 103, the relative position of the mounting base 11 and the mounting plate 12 is different, and the mounting hole 103 that mates with the protrusion 111 can be selected according to the requirements.

[0057] In one embodiment, such as Figure 1 and 7 As shown, the mounting hole 103 is non-circular, and the shape of the protrusion 111 matches the shape of the mounting hole 103. Thus, when the protrusion 111 is confined within the mounting hole 103, the relative rotation between the mounting plate 12 and the mounting base 11 can be restricted.

[0058] In one embodiment, such as Figures 1 to 3 As shown, the auxiliary part 40 is at least partially located on the side of the main body 30, and extends from the end connected to the main body 30 in a direction away from the main body 30. In the direction away from the main body 30, the distance between the axis of the auxiliary part 40 and the first scale line 41 in a direction perpendicular to the axis gradually decreases, and the distance between the axis of the auxiliary part 40 and the second scale line 42 in a direction perpendicular to the axis gradually decreases. This arrangement allows the first visible light 511 to be transmitted through the first scale line 41, the second visible light 521 to be transmitted through the second scale line 42, and the third visible light 531 to be transmitted through the third laser line 43, facilitating the determination of the treatment table's placement.

[0059] In one embodiment, the surface of the auxiliary part 40 is provided with two first scale lines 41, which are located on opposite sides of the reference line 44; the surface of the auxiliary part 40 is provided with two second scale lines 42, which are located on opposite sides of the reference line 44.

[0060] In one embodiment, such as Figure 4 and Figure 5 As shown, the third scale line 43 is circular.

[0061] In one embodiment, such as Figure 4 and Figure 5 As shown, the surface of the auxiliary part 40 is provided with a plurality of third scale lines 43, which are arranged at intervals in a direction away from the main body part 30.

[0062] Furthermore, the surface of the auxiliary part 40 is also provided with a plurality of indicator lines 45 located between two adjacent third scale lines 43, and the plurality of indicator lines 45 between two adjacent third scale lines 43 are evenly spaced in a direction away from the main body 30. With this arrangement, during the calibration process, if the third visible light does not coincide with the third scale line 43, the distance of the positioning deviation of the treatment table in the second direction Y can be determined according to the indicator line 45 that coincides with the third visible light, so that targeted adjustments can be made.

[0063] In one embodiment, such as Figure 4 and Figure 5 As shown, the auxiliary part 40 includes a body 402, which is conical in shape. In other embodiments, the body 402 may also be called a square pyramid, that is, the cross-section of the body 402 perpendicular to its axis is rectangular.

[0064] In one embodiment, the auxiliary part 40 is detachably connected to the main body part 30. For example... Figure 4 and Figure 5 As shown, the auxiliary part 40 also includes a mounting part 401 connected to one end of the main body 402. The mounting part 401 has a non-circular cross-section perpendicular to the axis of the auxiliary part 40. The main body 30 is provided with a mounting hole that mates with the auxiliary part 40. After the mounting part 401 of the auxiliary part 40 is installed in the mounting hole, the auxiliary part 40 is fixed to the main body 30, restricting the rotation of the auxiliary part 40 relative to the main body 30.

[0065] In one embodiment, in the first state, the angles between the first plane, the second plane, and the third plane and the plane containing the mounting surface 104 are all acute angles. This configuration allows the calibration device to introduce angular deflections in at least two directions, better simulating the deflection of the treatment table in a clinical setting. In some embodiments, in the first state, the first plane deflects about the X-axis relative to the XY plane and about the Y-axis relative to the XY plane.

[0066] In one embodiment, the main body 30 is detachably connected to the base 10; the relative position between the main body 30 and the base 10 can be changed to allow the main structure 20 to transition from a first state to a switching state; the angle between the plane corresponding to the switching state and the plane containing the mounting surface is an acute angle, and the position of the plane corresponding to the switching state is different from the position of the plane corresponding to the first state. This configuration allows for the simulation of different situations where the treatment table deflects in a clinical setting by changing the relative position between the main body 30 and the base 10.

[0067] In one embodiment, such as Figure 3As shown, the verification device further includes a connector 70, which connects the main body 30 to the base 10, fixing the main body structure 20 in the first state or the switching state. Thus, the position of the main body structure 20 relative to the base 10 does not change in the first state and the switching state, preventing changes in the relative position of the main body structure 20 and the base 10 during verification and thus affecting the accuracy of the verification.

[0068] In one embodiment, such as Figure 3 As shown, the connector 70 includes a connecting rod 71, a washer 72, and a fastener 73. The main body 30 has a cavity 302 and a through hole 301. The through hole 301 is located on the side of the cavity 302 facing the base 10 and communicates with the cavity 302. The base 10 has a through hole 102. The end of the connecting rod 71 away from the cavity 302 has an abutment portion 711, which abuts against the base 10. The connecting rod 71 is located in both the through hole 301 and the through hole 102, and the end of the connecting rod 71 away from the abutment portion 711 passes through the opening of the washer 72 and enters the cavity 302. The fastener 73 is located on the side of the washer 72 away from the base 10, abuts against the washer 72, and is fixedly connected to the connecting rod 71. The surface of the washer 72 facing the base 10 abuts against the surface of the cavity 302.

[0069] In one embodiment, the area of ​​the cavity 302 of the main body 30 surrounding the through hole 701 is part of a sphere, and the surface of the gasket 72 facing the base 10 is also part of a sphere, with both spheres having the same radius. This configuration ensures that when the main body 30 rotates relative to the base 10 in different directions or at different angles in the same direction, the surface of the gasket 72 facing the base 10 can always fit against the surface of the cavity 302, providing a secure connection between the main body 30 and the base 10 and preventing relative movement between them.

[0070] In one embodiment, such as Figure 3 , Figure 7 and Figure 8 As shown, the bearing surface 101 is part of a sphere, and the bottom surface of the main body 30 that mates with the bearing surface 101 is also part of a sphere. The radius of the sphere containing the bearing surface is the same as the radius of the sphere containing the bottom surface of the main body 30 that mates with the bearing surface 101. With this configuration, the main body 30 can still mate well with the bearing surface 101 even when it rotates relative to the bearing surface 101 in different directions.

[0071] Furthermore, the line connecting the center of the sphere containing the bearing surface 101 and the center of the sphere containing the bottom surface of the main body 30 that mates with the bearing surface 101 is parallel or perpendicular to the first plane. When the main body 30 rotates relative to the bearing surface 101 in different directions, the first plane rotates accordingly; since the first plane is parallel or perpendicular to this connecting line, the degree of deflection of the first plane relative to the mounting surface 104 can be better controlled. In the illustrated embodiment, the first plane is parallel to this connecting line. In other embodiments, the first plane may be perpendicular to this connecting line.

[0072] In one embodiment, the switching state includes a second state, and the plane corresponding to the second state is a third plane. For example... Figure 7 and Figure 8 As shown, the bottom surface of the main body 30 that mates with the bearing surface 101 and the bearing surface 101 are provided with at least one first groove group 13, and the other is provided with at least one first protrusion group 33. Each first groove group 13 is provided with a plurality of first grooves 131 arranged in parallel, and each first protrusion group 33 is provided with a plurality of first protrusions 331 arranged in parallel. One first protrusion group 33 mates with one first groove group 13. In the mates of the first groove group 13 and the first protrusion group 33, the number of first protrusions 331 is less than the number of first grooves 131, and each first protrusion 331 is located in one first groove 131. The first groove 131 that mates with the first protrusion 331 in the first state and the first groove 131 that mates with the first protrusion 331 in the second state are not all the same. With this configuration, by changing the first groove 131 that mates with the first protrusion 331, the position of the third plane can be changed, introducing different deflection angles when deflected around the Y direction, so that the calibration device can simulate the situation where the treatment table undergoes a variety of different deflection angles in a clinical scenario.

[0073] Figure 7 and Figure 8 In the illustrated embodiment, the first groove group 13 is disposed on the bearing surface 101, and the first protrusion group 33 is disposed on the main body portion 30. In other embodiments, the first groove group 13 is disposed on the main body portion 30, and the first protrusion group 33 is disposed on the bearing surface 101.

[0074] In one embodiment, the bearing surface 101 is part of a sphere, and the bottom surface of the main body 30 that mates with the bearing surface 101 is also part of a sphere. When the radius of the sphere containing the bearing surface and the radius of the sphere containing the bottom surface of the main body 30 that mates with the bearing surface 101 are the same, the plane connecting the centers of these two spheres and parallel to the third plane is the first reference plane. When the first protrusion group 33 is provided on the main body 30, the plurality of first protrusions 331 of the first protrusion group 33 are distributed on opposite sides of the first reference plane. When the first groove group 13 is provided on the main body 30, the plurality of first grooves 131 of the first groove group 13 are distributed on opposite sides of the first reference plane. Thus, the main body 30 can deflect relative to the bearing surface 101 in two opposite directions around the Y direction.

[0075] Furthermore, when the first protrusion group 33 is provided on the main body 30, the portions of the first protrusion group 33 located on opposite sides of the first reference surface are symmetrical; when the first groove group 13 is provided on the main body 30, the portions of the plurality of first grooves 131 of the first groove group 13 located on opposite sides of the first reference surface are symmetrical. In this way, the main body 30 can be deflected at the same angle relative to the bearing surface 101 about the Y direction to opposite sides.

[0076] In one embodiment, such as Figure 7 and Figure 8 As shown, the bottom surface of the main body 30 that mates with the bearing surface 101 and the bearing surface 101 are provided with two first groove groups 13 and two first protrusion groups 33, respectively. The two first protrusion groups 33 are spaced apart in the extending direction of the first protrusion 331. One first protrusion group 33 mates with one first groove group 13. In the first state and the second state, each first groove group 13 mates with its corresponding first protrusion group 33. With this configuration, during the process of the main body 30 deflecting relative to the bearing surface 101 in the X direction, the first groove group 13 mates with its corresponding first protrusion group 33, which makes the rotation of the main body 30 more stable.

[0077] Furthermore, when the first protrusion group 33 is provided in the main body 30, the two first protrusion groups 33 are located on opposite sides of the second reference surface and are symmetrical about the second reference surface; the second reference surface is perpendicular to the first reference surface and passes through the center of the sphere where the bottom surface of the main body 30 and the bearing surface 101 are located; when the first groove group 13 is provided in the main body 30, the two first groove groups 13 are located on opposite sides of the second reference surface and are symmetrical about the second reference surface.

[0078] In one embodiment, the switching state includes a third state, and the plane corresponding to the third state is the first plane. For example... Figure 7 and Figure 8As shown, the bottom surface of the main body 30 that mates with the bearing surface 101 and the bearing surface 101 are provided with at least one second groove group 14, and the other is provided with at least one second protrusion group 34; each second groove group 14 is provided with a plurality of parallel second grooves 141, and each second protrusion group 34 is provided with a plurality of parallel second protrusions 341; one second protrusion group 34 mates with one second groove group 14; in the mating second groove group 14 and the second protrusion group 34, the number of second protrusions 341 is less than the number of second grooves 141, and each second protrusion 341 is located within one second groove 141; the second groove 141 that mates with the second protrusion 341 in the first state and the second groove 141 that mates with the second protrusion 341 in the third state are not all the same. With this configuration, by changing the second groove 141 that mates with the second protrusion 341, the position of the first plane can be changed, introducing different deflection angles around the X direction, so that the calibration device can simulate the situation where the treatment table in a clinical scenario has a variety of different deflection angles.

[0079] Figure 7 and Figure 8 In the illustrated embodiment, the second groove group 14 is disposed on the bearing surface 101, and the second protrusion group 34 is disposed on the main body portion 30. In other embodiments, the second groove group 14 is disposed on the main body portion 30, and the second protrusion group 34 is disposed on the bearing surface 101.

[0080] In one embodiment, the bearing surface 101 is part of a sphere, and the bottom surface of the main body 30 that mates with the bearing surface 101 is also part of a sphere. When the radius of the sphere containing the bearing surface and the radius of the sphere containing the bottom surface of the main body 30 that mates with the bearing surface 101 are the same, the plane passing through the center of these two spheres and perpendicular to the first plane is the second reference plane. When the second protrusion group 34 is provided on the main body 30, the plurality of second protrusions 341 of the second protrusion group 34 are distributed on opposite sides of the second reference plane. When the second groove group 14 is provided on the main body 30, the plurality of second grooves 141 of the second groove group 14 are distributed on opposite sides of the second reference plane. In this way, the main body 30 can be deflected relative to the bearing surface 101 in two opposite directions around the X direction.

[0081] Furthermore, when the second protrusion group 34 is provided on the main body 30, the portions of the plurality of second protrusions 341 of the second protrusion group 34 located on opposite sides of the second reference surface are symmetrical; when the second groove group 14 is provided on the main body 30, the portions of the plurality of second grooves 141 of the second groove group 14 located on opposite sides of the second reference surface are symmetrical. In this way, the main body 30 can be deflected at the same angle relative to the bearing surface 101 about the X direction to opposite sides.

[0082] In one embodiment, such as Figure 7 and Figure 8As shown, the bottom surface of the main body 30 that mates with the bearing surface 101 and the bearing surface 101 are provided with two second groove groups 14, and the other is provided with two second protrusion groups 34. The two second protrusion groups 34 are spaced apart in the extending direction of the second protrusion 341. One second protrusion group 34 mates with one second groove group 14. In the first state and the third state, each second groove group 14 mates with the corresponding second protrusion group 34. With this configuration, during the process of the main body 30 deflecting relative to the bearing surface 101 around the Y direction, each second groove group 14 mates with the corresponding second protrusion group 34, which makes the rotation of the main body 30 more stable.

[0083] Furthermore, when the second protrusion group 34 is provided in the main body 30, the two second protrusion groups 34 are located on opposite sides of the first reference surface and are symmetrical about the first reference surface; when the second groove group 14 is provided in the main body 30, the two second groove groups 14 are located on opposite sides of the first reference surface and are symmetrical about the first reference surface.

[0084] In some embodiments, the second state and the third state can be the same state, that is, the main body 30 deflects simultaneously about the X direction and about the Y direction relative to the bearing surface 101. In this way, the calibration device can more realistically simulate the situation where the treatment table undergoes angular deflection in multiple directions in a clinical setting.

[0085] In one embodiment, such as Figure 1 , Figure 8 and Figure 9 As shown, the main body 30 includes a first part 31 and a second part 32. The second part 32 is located at the end of the first part 31 away from the base 10, and the auxiliary part 40 is mounted on the second part 32. The second part 32 is rotatable relative to the first part 31. With this configuration, after the second part 32 rotates relative to the first part 31, a deflection around the Z-direction can be introduced. The calibration device can more realistically simulate the compound deflection in multiple directions that occurs on the treatment table in a clinical scenario, thereby improving the reliability of the calibration device.

[0086] In some embodiments, the main body 30 may simultaneously deflect relative to the base 10 about the X direction, about the Y direction, and about the Z direction.

[0087] In one embodiment, the rotation axis of the second part 32 is parallel or perpendicular to the first plane. This configuration ensures that the calibration device can introduce a deflection about the Z direction without simultaneously introducing deflections about other directions, making the deflection of the calibration device controllable in all directions. In the illustrated embodiment, the rotation axis of the second part 32 is parallel to the first plane. In other embodiments, the rotation axis of the second part 32 may be perpendicular to the first plane.

[0088] In one embodiment, such as Figure 8 and Figure 9 As shown, the first part 31 is provided with at least one third protrusion group 35, and the second part 32 is provided with at least one fourth protrusion group 321. Each third protrusion group 35 includes a plurality of adjacently arranged third protrusions 351, and each fourth protrusion group 321 includes a plurality of adjacently arranged fourth protrusions 3211. A third protrusion group 35 and a fourth protrusion group 321 cooperate. In the mutually cooperating third protrusion group 35 and fourth protrusion group 321, the third protrusions 351 and the fourth protrusions 3211 engage, and the number of third protrusions 351 is different from the number of fourth protrusions 3211. With this configuration, when the number of third protrusions 351 in the third protrusion group 35 is less than the number of fourth protrusions 3211 in the fourth protrusion group 321, the second part 32 can be deflected relative to the base 10 in the Z direction by selecting the fourth protrusion 3211 that engages with the third protrusion 351 in the fourth protrusion group 321; alternatively, the deflection of the second part 32 relative to the base 10 in the Z direction can be changed by altering the fourth protrusion 3211 that engages with the third protrusion 351 in the fourth protrusion group 321. The angle; when the number of third protrusions 351 in the third protrusion group 35 is greater than the number of fourth protrusions 3211 in the fourth protrusion group 321, the second part 32 can be deflected relative to the base 10 in the Z direction by selecting the third protrusion 351 in the third protrusion group 35 that engages with the fourth protrusion 3211; or the angle of deflection of the second part 32 relative to the base 10 in the Z direction can be changed by changing the third protrusion 351 in the third protrusion group 35 that engages with the fourth protrusion 3211. This calibration device can simulate various situations of treatment table deflection in the Z direction in clinical scenarios.

[0089] In one embodiment, such as Figure 8 and Figure 9 As shown, the first part 31 is provided with a plurality of third protrusion groups 35, and the second part 32 is provided with a plurality of fourth protrusion groups 321. Each third protrusion group 35 cooperates with a fourth protrusion group 321. The plurality of third protrusion groups 35 are arranged at intervals around the rotation axis of the second part 32, and the plurality of fourth protrusion groups 321 are arranged at intervals around the rotation axis of the second part 32. This arrangement ensures that when the second part 32 rotates relative to the first part 31 in the Z direction, no deflection in other directions is introduced.

[0090] In one embodiment, such as Figure 8 and Figure 9As shown, the third protrusion group 35 is disposed on the surface of the first part 31 facing the second part 32, and the fourth protrusion group 321 is disposed on the surface of the second part 32 facing the first part 31. In this embodiment, a plurality of third protrusions 351 of the same third protrusion group 35 are arranged adjacently and spaced apart along an arc direction, the center of the circle containing the arc being located on the rotation axis of the second part 32; a plurality of fourth protrusions 3211 of the same fourth protrusion group 321 are arranged adjacently and spaced apart along an arc direction, the center of the circle containing the arc being located on the rotation axis of the second part 32.

[0091] Furthermore, such as Figure 8 As shown, the second part 32 is provided with a receiving groove 322, and a fourth protrusion group 321 is located in the receiving groove 322.

[0092] Figure 8 and Figure 9 In the illustrated embodiment, the third protrusion group 35 includes a greater number of third protrusions 351 than the fourth protrusion group 321 includes a greater number of fourth protrusions 3211. In other embodiments, the third protrusion group 35 includes a smaller number of third protrusions 351 than the fourth protrusion group 321 includes a smaller number of fourth protrusions 3211.

[0093] In another embodiment, one of the first part 31 and the second part 32 has a cavity, and the other has a protrusion located within the cavity; one of the third protrusion group and the fourth protrusion group is located on the inner surface of the cavity, and the other is located on the outer surface of the protrusion. In this embodiment, multiple third protrusions of the same third protrusion group are arranged side by side, and their extension directions may be parallel to each other; multiple fourth protrusions of the same fourth protrusion group are arranged side by side, and their extension directions may be parallel to each other.

[0094] In one embodiment, such as Figure 3 and Figure 9 As shown, the mounting part 36 is connected to the side of the second part 32 facing the base 10, and the mounting part 36 extends into the cavity 302 of the first part 31.

[0095] In one embodiment, the first protrusion, the first groove, the second protrusion, the second groove, the third protrusion, and the fourth protrusion may have a generally triangular cross-section perpendicular to their extension direction.

[0096] In one embodiment, such as Figure 6 As shown, the main structure 20 includes a plurality of auxiliary parts 40, which are divided into a plurality of auxiliary part groups 410; each auxiliary part group 410 includes at least one auxiliary part 40. Figure 6In the illustrated embodiment, the main structure 20 includes six auxiliary component groups. The auxiliary components 40 of the main structure 20 include auxiliary components 47, 48, 49, 491, 492, and 46. Among the six auxiliary component groups, one group includes auxiliary component 47, one group includes auxiliary component 48, one group includes auxiliary component 49, one group includes auxiliary component 491, one group includes auxiliary component 492, and one group includes auxiliary component 46. One auxiliary component group 410 corresponds to one treatment plan. The reference line of the auxiliary component 40 in this auxiliary component group 410 may be collinear with the center line 61 of the irradiation beam.

[0097] In one embodiment, the reference lines of the auxiliary parts 40 of at least two auxiliary part groups 410 intersect. BNCT clinical treatment requires flexible selection of the incident angle of the irradiation beam centerline 61 based on the tumor location and patient posture. This configuration allows the calibration device to be used for treatment plans with at least two different incident angles, improving the comprehensiveness of the calibration device's calibration. Figure 6 In the illustrated embodiment, the reference lines of auxiliary part 47, auxiliary part 48, auxiliary part 49, and auxiliary part 491 all intersect each other. Figure 6 In the embodiment shown, the auxiliary part used in the treatment plan is auxiliary part 48; Figure 10 In the illustrated embodiment, the auxiliary unit used in the treatment plan is auxiliary unit 491. That is, Figure 6 Corresponding treatment plan and Figure 10 The corresponding treatment plans have different incident angles at the center line 61 of the irradiation beam.

[0098] In one embodiment, the reference lines of the auxiliary sections 40 of at least two of the auxiliary section groups are parallel to each other. BNCT clinical treatment requires flexible selection of the incident position of the irradiation beam centerline 61, taking into account the tumor surface location and the patient's specific supine position close to the beam inlet. Some treatment plans have the same incident angle for the irradiation beam centerline 61, but different incident positions. The above configuration allows the calibration device to be used for treatment plans with the same incident angle but at least two different incident positions, improving the comprehensiveness of the calibration device's calibration. Figure 6 In the embodiment shown, the reference lines of auxiliary part 492, auxiliary part 48, and auxiliary part 46 are all parallel to each other. Figure 6 In the embodiment shown, the auxiliary part used in the treatment plan is auxiliary part 48; Figure 11 In the illustrated embodiment, the auxiliary unit used in the treatment plan is auxiliary unit 492. That is, Figure 6 Corresponding treatment plan and Figure 11 The corresponding treatment plans have the same incident angle at the center line 61 of the irradiation beam, but different incident positions.

[0099] In one embodiment, such as Figure 6 As shown, each auxiliary unit group 410 includes two auxiliary units 40. The two auxiliary units 40 of the same auxiliary unit group 410 are located on opposite sides of the main body 30, and the reference lines of the two auxiliary units 40 are on the same straight line. With this arrangement, the distance between the auxiliary unit 40 and the beam port 60 can be determined based on the end face of the auxiliary unit 40 near the beam port 60. Furthermore, the reference line of the auxiliary unit 40 selected in the treatment plan is on the same straight line as the center line 61 of the irradiation beam. Therefore, setting the auxiliary unit 40 on the side of the main body 30 near the beam port 60 facilitates the determination of the treatment plan. The auxiliary unit 40 located on the side of the main body 30 away from the beam port 60 is used in conjunction with visible light to determine the placement of the treatment table.

[0100] In one embodiment, when the main structure 20 includes multiple auxiliary component groups 410, before step 110 of the verification method, the verification method further includes: determining the auxiliary component group 410 corresponding to the treatment plan and removing the other auxiliary component groups 410 from the main structure 30. This avoids other auxiliary component groups 410 blocking visible light from entering the auxiliary component group 410 corresponding to the treatment plan, thus affecting the judgment in step 130.

[0101] The embodiments of the verification device, the positioning system, and the verification method provided in this application belong to the same inventive concept, and the descriptions of related details and beneficial effects can be referred to each other.

[0102] The terms "first," "second," and similar terms used in this application and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, unless otherwise specified. "A plurality" or "multiple" means two or more. The term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A calibration device for a boron neutron capture therapy system, used to verify the placement of the treatment table in the boron neutron capture therapy system, characterized in that, The verification device includes: The base includes a bearing surface and a mounting surface opposite to the bearing surface, all areas of the mounting surface being located on the same plane; The main structure includes a main body and an auxiliary body; the bottom of the main body is mounted on the bearing surface; the auxiliary body is mounted on the main body; the surface of the auxiliary body is provided with a first scale line, a second scale line, and a third scale line; the auxiliary body includes a reference line, the reference line and the first scale line are located on a first plane, the reference line and the second scale line are located on a second plane, and the plane where the third scale line is located is a third plane; the first plane, the second plane, and the third plane are all perpendicular to each other; the main structure has a first state, in which at least two of the first plane, the second plane, and the third plane form acute angles with the plane where the mounting surface is located.

2. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The reference line is the axis of the auxiliary part.

3. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, In the first state, the angles between the first plane, the second plane, and the third plane and the plane containing the mounting surface are all acute angles.

4. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The auxiliary portion is at least partially located on the side of the main body, and the auxiliary portion extends from the end connected to the main body in a direction away from the main body; the third plane is located on the side of the main body.

5. The calibration device for a boron neutron capture therapy system according to claim 4, characterized in that, The main body is detachably connected to the base; the relative position between the main body and the base can be changed so that the main structure changes from the first state to a switching state; the angle between the plane corresponding to the switching state and the plane where the mounting surface is located is an acute angle, and the position of the plane corresponding to the switching state is different from the position of the plane corresponding to the first state.

6. The calibration device for a boron neutron capture therapy system according to claim 5, characterized in that, The verification device further includes a connector for connecting the main body to the base, thereby fixing the main body structure in the first state or the switching state.

7. The calibration device for a boron neutron capture therapy system according to claim 5, characterized in that, The switching state includes a second state, and the plane corresponding to the second state is the third plane; The main body portion and the bearing surface have at least one first groove group on the bottom surface and at least one first protrusion group on the bearing surface; each first groove group has multiple first grooves arranged in parallel, and each first protrusion group includes multiple first protrusions arranged in parallel; one first protrusion group mates with one first groove group; in the mating first groove group and first protrusion group, the number of first protrusions is less than the number of first grooves, and each first protrusion is located in one first groove; the first groove that mates with the first protrusion in the first state and the first groove that mates with the first protrusion in the second state are not all the same.

8. The calibration device for a boron neutron capture therapy system according to claim 7, characterized in that, The bottom surface of the main body that mates with the bearing surface and the bearing surface are provided with two first groove groups and two first protrusion groups, respectively. The two first protrusion groups are spaced apart in the extending direction of the first protrusions; one first protrusion group mates with one first groove group. In the first state and the second state, each first groove group cooperates with the corresponding first protrusion group.

9. The calibration device for a boron neutron capture therapy system according to claim 5, characterized in that, The switching state includes a third state, and the plane corresponding to the third state is the first plane; One of the bottom surface of the main body that mates with the bearing surface and the bearing surface is provided with at least one second groove group, and the other is provided with at least one second protrusion group; each second groove group is provided with a plurality of second grooves arranged in parallel, and each second protrusion group is provided with a plurality of second protrusions arranged in parallel; one second protrusion group mates with one second groove group; in the mating second groove group and the second protrusion group, the number of second protrusions is less than the number of second grooves, and each second protrusion is located in one second groove; the second groove that mates with the second protrusion in the first state and the second groove that mates with the second protrusion in the third state are not all the same.

10. The calibration device for a boron neutron capture therapy system according to claim 9, characterized in that, The bottom surface of the main body that mates with the bearing surface and the bearing surface are provided with two second groove groups and two second protrusion groups, respectively. The two second protrusion groups are spaced apart in the extending direction of the second protrusions; one second protrusion group mates with one second groove group. In the first state and the third state, each second groove group cooperates with the corresponding second protrusion group.

11. The calibration apparatus for a boron neutron capture therapy system according to any one of claims 2 to 10, characterized in that, The bearing surface is part of a sphere, and the bottom surface of the main body that mates with the bearing surface is also part of a sphere. The radius of the sphere containing the bearing surface is the same as the radius of the sphere containing the bottom surface of the main body that mates with the bearing surface. The line connecting the center of the sphere containing the bearing surface and the center of the sphere containing the bottom surface of the main body that mates with the bearing surface is parallel or perpendicular to the first plane.

12. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The main body includes a first part and a second part, the second part being located at the end of the first part away from the base, and the auxiliary part being mounted on the second part; the second part is rotatable relative to the first part.

13. The calibration device for a boron neutron capture therapy system according to claim 12, characterized in that, The rotation axis of the second part is parallel or perpendicular to the first plane.

14. The calibration device for a boron neutron capture therapy system according to claim 12, characterized in that, The first part is provided with at least one third protrusion group, and the second part is provided with at least one fourth protrusion group. Each third protrusion group includes a plurality of adjacent third protrusions, and each fourth protrusion group includes a plurality of adjacent fourth protrusions. A third protrusion group and a fourth protrusion group cooperate. In the mutually cooperating third protrusion group and fourth protrusion group, the third protrusions mesh with the fourth protrusions, and the number of third protrusions is different from the number of fourth protrusions.

15. The calibration device for a boron neutron capture therapy system according to claim 14, characterized in that, The third protrusion group is disposed on the surface of the first part facing the second part, and the fourth protrusion group is disposed on the surface of the second part facing the first part; or... One of the first part and the second part is provided with a cavity, and the other is provided with a protrusion, the protrusion being located inside the cavity; one of the third protrusion group and the fourth protrusion group is provided on the inner surface of the cavity, and the other is provided on the outer surface of the protrusion.

16. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The main structure includes multiple auxiliary parts, which are divided into multiple auxiliary part groups; each auxiliary part group includes at least one auxiliary part; and the reference lines of the auxiliary parts of at least two of the auxiliary part groups intersect.

17. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The main structure includes multiple auxiliary parts, which are divided into multiple auxiliary part groups; each auxiliary part group includes at least one auxiliary part; the reference lines of the auxiliary parts of at least two of the auxiliary part groups are parallel to each other.

18. The calibration device for a boron neutron capture therapy system according to claim 16 or 17, characterized in that, Each of the auxiliary part groups includes two auxiliary parts, the two auxiliary parts of the same auxiliary part group are located on opposite sides of the main body, and the reference lines of the two auxiliary parts are on the same straight line.

19. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The auxiliary part is at least partially located on the side of the main body, and the auxiliary part extends from the end connected to the main body in a direction away from the main body; the third plane is located on the side of the main body; in the direction away from the main body, both the first scale line and the second scale line extend from the end of the auxiliary part connected to the main body in a direction away from the main body; In the direction away from the main body, the distance between the axis of the auxiliary part and the first scale line in the direction perpendicular to the axis gradually decreases, and the distance between the axis of the auxiliary part and the second scale line in the direction perpendicular to the axis gradually decreases.

20. The calibration device for a boron neutron capture therapy system according to claim 1, characterized in that, The auxiliary part is at least partially located on the side of the main body; the auxiliary part is provided with a plurality of third scale lines, which are arranged in a direction away from the main body; The surface of the auxiliary part is also provided with a plurality of indicator lines located between two adjacent third scale lines, and the plurality of indicator lines between two adjacent third scale lines are evenly spaced in the direction away from the main body.

21. A positioning system for a boron neutron capture therapy system, characterized in that, The device includes a treatment table, a light positioning device, an imaging positioning device, a driving device, and a verification device as described in any one of claims 1 to 20; the base of the verification device is mounted on the treatment table, and the mounting surface of the base abuts against the treatment table; the imaging positioning device is configured to acquire an image of the verification device at its current position, and the driving device is configured to move the treatment table according to the current position information of the verification device determined based on the image and preset position information.

22. The positioning system for a boron neutron capture therapy system according to claim 21, characterized in that, The light positioning device includes a first light emitter, a second light emitter, and a third light emitter; the first light emitter emits a first visible light, the second light emitter emits a second visible light, and the third light emitter emits a third visible light; the third visible light is used in conjunction with the third scale line to verify the positioning accuracy of the treatment table in a first direction; the first visible light is used in conjunction with the first scale line to verify the positioning accuracy of the treatment table in a second direction; the second visible light is used in conjunction with the second scale line to verify the positioning accuracy of the treatment table in a third direction; the first direction, the second direction, and the third direction are all perpendicular to each other.

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