Therapeutic apparatus and radiation therapy apparatus

Abstract

The invention provides a therapy apparatus and a radiation therapy apparatus capable of reducing the limitation on the movement range of a therapy table while suppressing the area of a therapy room. The movable door (70) slides to the left side in the transverse direction (D1) relative to the irradiation opening (55a) during the first sliding, and slides to the right side in the transverse direction (D1) relative to the irradiation opening (55a) during the second sliding. Namely, when the movable door (70) slides towards one side in the transverse direction (D1), the movable door (70) does not exist on the other side, and when the movable door (70) slides towards the other side in the transverse direction (D1), the movable door (70) does not exist on the one side. Therefore, when the treatment table (60) moves close to the wall part (103) (as shown in the states (a) and (b) in Figure 5), the movable door (70) slides to the side opposite to the treatment table (60), so that the space of the treatment table (60) can be ensured. At this time, even if the movable door (70) and the irradiation port (55a) are not excessively spaced apart, interference between the movable door (70) and the treatment table (60) can be suppressed.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2024-176580, filed on October 8, 2024. The entire contents of that Japanese application are incorporated herein by reference. Technical Field

[0002] This invention relates to a treatment device and a radiation therapy apparatus. Background Technology

[0003] As a form of neutron capture therapy that uses neutron beams to kill cancer cells, boron neutron capture therapy (BNCT) using boron compounds is known. In boron neutron capture therapy, a neutron beam is irradiated with boron pre-incorporated into cancer cells, and the cancer cells are selectively destroyed by the scattering of the resulting heavily charged particles.

[0004] As a type of radiation therapy device as described above, there is a known radiation therapy device, for example, the one described in Patent Document 1. The radiation therapy device described in Patent Document 1 performs treatment by positioning a patient, fixed to a mounting component, in front of the irradiation port of a neutron beam. Therefore, it is necessary to position the patient in a preparation room and then reposition the patient after transferring them to the treatment room.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-83351

[0006] In the aforementioned radiotherapy apparatus, a movable door is sometimes installed to cover the irradiation port in order to suppress radiation leakage. This movable door is divided into a pair of door components and has a mechanism that allows each door component to slide simultaneously to the left and right sides of the irradiation port to open. Therefore, the movable door is opened during treatment and closed when treatment is not being performed. Here, in the radiotherapy apparatus, depending on the treatment being performed, the treatment table on which the patient is fixed is sometimes positioned in various directions or orientations. In this case, the range of movement of the treatment table is restricted to prevent interference with the opened door. Alternatively, there may be a problem that the space of the treatment room needs to be expanded to ensure sufficient space to open the movable door to avoid interference with the treatment table. Summary of the Invention

[0007] Therefore, the object of the present invention is to provide a treatment device and a radiotherapy apparatus that can reduce the area of ​​the treatment room while minimizing the limitations on the movement range of the treatment table.

[0008] The treatment device of the present invention is a treatment device for treating an irradiated body by irradiating it with radiation, comprising: an irradiation part for irradiating radiation; a wall part for irradiation port on which the irradiation part is provided; and a movable door configured to be opposite the wall part in a manner that covers the irradiation port, the movable door sliding along the wall part to the lateral sides of the irradiation port.

[0009] The treatment device of the present invention includes: a wall portion with an irradiation port for an irradiation unit; and a movable door positioned opposite the wall portion to cover the irradiation port. Therefore, when not undergoing treatment, the movable door covers the irradiation port, thereby preventing radiation leakage into the treatment room. The movable door slides laterally along the wall portion towards both sides of the irradiation port. Therefore, during treatment, the movable door slides to allow radiation to be irradiated through the irradiation port. That is, the structure of the movable door differs from a structure where a pair of door components slide simultaneously to the left and right sides; when the movable door slides laterally to one side, there is no movable door on the other side, and when the movable door slides laterally to the other side, there is no movable door on one side. Therefore, when the treatment table moves closer to the wall portion, the movable door slides to the side opposite to the treatment table, thereby ensuring space on the treatment table. At this time, even without excessive separation between the movable door and the irradiation port, interference between the movable door and the treatment table can be suppressed. Therefore, it is not necessary to design the treatment room to ensure space for the sliding movable door. This allows for a reduction in the size of the treatment room while minimizing restrictions on the movement of the treatment table.

[0010] During the first slide, the movable door slides to one side laterally relative to the irradiation port; during the second slide, the movable door slides to the other side laterally relative to the irradiation port. Thus, it is possible to achieve a state where, during the first slide, there is no movable door on the other side, and during the second slide, there is no movable door on one side.

[0011] The treatment device may also include: a guide portion, disposed on one of the upper and lower sides of the movable door, for guiding the movable door to slide laterally; and a limiting portion, disposed on the other of the upper and lower sides of the movable door, for limiting the movement of the movable door in the thickness direction. This allows the movable door to slide smoothly and without wobbling.

[0012] The treatment device also includes a treatment table for placing the irradiated body and a control unit for performing treatment-related calculations. The control unit can calculate the orientation and position of the treatment table according to the treatment plan and determine the sliding direction of the movable door. Thus, the control unit can determine the movement of the treatment table and the movable door according to the treatment plan.

[0013] The control unit can control the movable door to slide in a predetermined sliding direction. In this case, the movable door can be automatically controlled.

[0014] The treatment device also includes a detection unit for detecting the position of the movable door, which can be located on the top side. By positioning the detection unit at a higher level, it is possible to prevent the detection unit from erroneously detecting the operator or other components within the treatment room.

[0015] The radiation can be a neutron beam. In this case, the above-mentioned effects can be achieved during neutron capture therapy, where the range of movement of the treatment table is increased.

[0016] The radiotherapy apparatus of the present invention is a radiotherapy apparatus for treating an irradiated body by irradiating it with radiation. It includes: an irradiation part, irradiating radiation; and a movable door, which is configured to cover the irradiation port of the irradiation part and face a wall part having the irradiation port. The movable door slides along the wall part to the lateral sides of the irradiation port.

[0017] According to this radiation therapy device, the same therapeutic effect as the aforementioned treatment equipment can be achieved.

[0018] Invention Effects

[0019] According to the present invention, a treatment device and a radiation therapy apparatus are provided that can reduce the area of ​​the treatment room while minimizing restrictions on the movement range of the treatment table. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the treatment equipment and radiation therapy device involved in the embodiments of the present invention.

[0021] Figure 2 This is a schematic diagram of the treatment equipment and radiation therapy device involved in the embodiments of the present invention.

[0022] Figure 3 This is a front view showing the structure of the movable door.

[0023] Figure 4 This is a side view showing the structure of the movable door.

[0024] Figure 5 This is a schematic diagram illustrating the sliding mechanism of a movable door.

[0025] Figure 6 This is a diagram showing the positional relationship between the detection unit and the movable door.

[0026] In the diagram: 1-Radiation therapy device, 50-Patient (irradiated body), 55-Irradiation part, 55a-Irradiation port, 60-Treatment table, 70-Movable door, 71-Guiding part, 73-Restriction part, 150-Control part. Detailed Implementation

[0027] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram illustrating the treatment device 100 and the radiation therapy apparatus 1 according to an embodiment of the present invention. In this embodiment, the radiation therapy apparatus 1 is exemplified as a neutron capture therapy apparatus for cancer treatment using boron neutron capture therapy (BNCT). However, the radiation therapy apparatus 1 is not limited to a neutron capture therapy apparatus; X-rays, proton beams, heavy ion beams, or other radiation therapy apparatuses may also be used.

[0029] like Figure 1 As shown, the treatment device 100 includes a radiation therapy device 1, a treatment room 101 in which the radiation therapy device 1 treats the patient 50 (the irradiated body), and an accelerator room 102 in which the accelerator 2, described later, is installed. Furthermore, the treatment device 100 includes a wall 103 that separates the treatment room 101 and the accelerator room 102.

[0030] refer to Figure 2 The radiation therapy device 1 will be described below. Radiation therapy device 1, for example, is used to treat patients injected with boron (… 10 Patient B) has a tumor irradiated with a neutron beam N. The radiation therapy device 1 includes an accelerator 2. The accelerator 2 accelerates the particles and emits a particle beam R. For example, the accelerator 2 can be a cyclotron, a linear accelerator, etc.

[0031] The particle beam R emitted from accelerator 2 is transported to target placement section 30 via a transmission path 9, which is internally maintained under vacuum and allows the beam to pass through. Target placement section 30 is for placing the target 10 and has a mechanism for holding the target 10 in the irradiation position. Target placement section 30 positions the target 10 opposite the end of transmission path 9. The particle beam R emitted from accelerator 2 travels through transmission path 9 toward the target 10 positioned at the end of transmission path 9. Multiple electromagnets 4 (such as quadrupole electromagnets) and scanning electromagnets 6 are provided along transmission path 9. The multiple electromagnets 4 are used, for example, to adjust the beam axis of the particle beam R.

[0032] The scanning electromagnet 6 scans the particle beam R, controlling the irradiation of the target 10 by the particle beam R. The scanning electromagnet 6 controls the irradiation position of the particle beam R on the target 10.

[0033] The radiation therapy device 1 generates a neutron beam N by irradiating a target 10 with a particle beam R, and then emits the neutron beam N toward the patient 50. The radiation therapy device 1 includes a target 10, a shield 8, a deceleration component 39, and a collimator 20.

[0034] The target 10 is irradiated by a particle beam R to generate a neutron beam N. The target 10 is a solid-shaped component formed from a material that generates a neutron beam N by irradiating the particle beam R. Specifically, the target 10 is formed, for example, from beryllium (Be), lithium (Li), tantalum (Ta), or tungsten (W), and is, for example, a disk-shaped solid shape with a diameter of 160 mm. However, the target 10 is not limited to a disk shape and may also be other shapes.

[0035] The deceleration member 39 slows down the neutron beam N generated by the target 10 (reducing the energy of the neutron beam N). The deceleration member 39 may have a stacked structure, including a layer 39A that mainly slows down the fast neutrons contained in the neutron beam N, and a layer 39B that mainly slows down the hyperthermal neutrons contained in the neutron beam N.

[0036] The shield 8 shields the generated neutron beam N and the accompanying gamma rays to prevent them from being released to the outside. The shield 8 is configured to surround the deceleration member 39. The upper and lower parts of the shield 8 extend upstream of the particle beam R than the deceleration member 39.

[0037] Collimator 20 shapes the irradiation field of the neutron beam N and has an irradiation port 55a through which the neutron beam N passes. Collimator 20 is, for example, a block-shaped component with an irradiation port in the center. Collimator 20 is mounted on the wall 103 where the neutron beam N is irradiated into the treatment chamber 101.

[0038] The irradiation section 55 for irradiating the neutron beam is constructed by the aforementioned accelerator 2, transmission path 9, target 10, deceleration member 39, and collimator 20. The irradiation port of the collimator 20 corresponds to the irradiation port 55a of the irradiation section 55. The irradiation port 55a of the irradiation section 55 is provided on the wall portion 103. Alternatively, the collimator 20 may not be provided on the wall portion 103, or it may be provided on the treatment table 60. The direction along the horizontal direction of the wall portion 103 is defined as the transverse direction D1. The direction extending from the irradiation axis of the neutron beam N irradiated from the irradiation port 55a is defined as the front-back direction D2.

[0039] The radiotherapy apparatus 1 includes a moving mechanism 110. The moving mechanism 110 has a base portion 111, which is disposed on the ground at a predetermined distance from the irradiation port 55a. The base portion 111 is a component extending vertically, capable of rotating about an axis extending vertically, and capable of rising and falling vertically. The base portion 111 has an arm portion 112 extending horizontally. A support portion 113 for supporting the treatment table 60 is provided at the front end of the arm portion 112. The arm portion 112 can telescopically change the position of the support portion 113. Furthermore, the arm portion 112 can also adjust the tilt of the support portion 113. The support portion 113 is capable of rotating about an axis extending vertically at the front end of the arm portion 112.

[0040] The radiation therapy apparatus 1 includes a movable door 70. The movable door 70 is positioned opposite the wall portion 103 to cover the irradiation port 55a. The movable door 70 is disposed between the wall portion 103 and the moving mechanism 110. The movable door 70 is configured to extend vertically and laterally D1 opposite the wall portion 103. The thickness direction of the movable door 70 is aligned with the front-rear direction D2. When viewed from the front, the movable door 70 is configured to cover the entire area of ​​the irradiation port 55a (see reference). Figure 3 The movable door 70 has a rectangular shape (see reference). Figure 3 However, this is not the only option; appropriate modifications can be made. The size of the gap between the movable door 70 and the surface 103a of the wall 103 is set to a degree that can suppress radiation leakage from the irradiation port 55a. Furthermore, when the collimator 20 protrudes from the surface 103a of the wall 103, the movable door 70 is configured not to interfere with the front end of the collimator 20. The material of the movable door 70 is not particularly limited; any material capable of shielding radiation is acceptable, and it can be made of materials such as lead, iron, or concrete.

[0041] refer to Figures 3 to 5 Details of the movable door 70 will be explained. Furthermore, in the following description, the positions used when observing the irradiation port 55a within the treatment room 101 will be used as a reference, referred to as "left" and "right." Figure 3 and Figure 5 As shown, the movable door 70 slides along the wall portion 103 to both sides of the irradiation port 55a in the horizontal direction D1. That is, the movable door 70 can slide to the left side of the irradiation port 55a in the horizontal direction D1 (see reference). Figure 5 (middle figure (a)). The movable door 70 can slide to the right in the transverse direction D1 relative to the irradiation port 55a (reference). Figure 5 (Figure (b)). Unlike a door where a pair of door components slide simultaneously to the left and right, the movable door 70 is formed as an indivisible unit. During the first slide, the movable door 70 slides to the left in the horizontal direction D1 relative to the irradiation port 55a. During the second slide, the movable door 70 slides to the right in the horizontal direction D1 relative to the irradiation port 55a. Therefore, when the movable door 70 slides to the left of the irradiation port 55a, the movable door 70 slides entirely to the left, and there is no movable door 70 on the right side of the irradiation port 55a. When the movable door 70 slides to the right of the irradiation port 55a, the movable door 70 slides entirely to the right, and there is no movable door 70 on the left side of the irradiation port 55a.

[0042] like Figure 3 and Figure 4 As shown, the radiotherapy device 1 includes a guide section 71, a drive section 72, and a limiting section 73. The guide section 71 and the drive section 72 are located on the upper end side of the movable door 70. The limiting section 73 is located on the lower end side of the movable door 70.

[0043] The guide portion 71 is a component that guides the movable door 70 to slide laterally D1. The guide portion 71 is configured to extend laterally D1 above the movable door 70 in the wall portion 103. The movable door 70 has a pair of pillar portions 74 extending upward from its upper end and a pair of wheel portions 76 provided on each pillar portion 74. The pillar portions 74 support the wheel portions 76 so that they can rotate. The wheel portions 76 are configured such that their axis of rotation extends in the front-rear direction D2. The wheel portions 76 are mounted on the upper end of the guide portion 71 on their outer peripheral surface. Thus, the movable door 70 slides laterally D1 by traveling on the guide portion 71 via the wheel portions 76.

[0044] The drive unit 72 is a mechanism that provides driving force for sliding the movable door 70. The drive unit 72 is disposed between the movable door 70 and the guide unit 71. The drive unit 72 includes a drive pulley 77, a driven pulley 78, a transmission belt 79, and a connecting part 80. The pulleys 78 and 77 are configured such that their rotation axes extend along the longitudinal direction D2. The drive pulley 77 is disposed at one end (right side) of the drive unit 72 in the transverse direction D1. The driven pulley 78 is disposed at the other end (left side) of the drive unit 72 in the transverse direction D1. The drive pulley 77 is connected to a motor (not shown), and is a pulley that provides driving force to the transmission belt 79 by rotation. The transmission belt 79 is a loop-shaped annular belt. The transmission belt 79 straddles the drive pulley 77 and the driven pulley 78. The drive belt 79 has an upper portion 79a that spans the upper end of the drive pulley 77 and the upper end of the driven pulley 78, and a lower portion 79b that spans the lower end of the drive pulley 77 and the lower end of the driven pulley 78. A connecting portion 80 connects the column portion 74 to the upper portion 79a of the drive belt 79. Thus, by rotating the drive pulley 77, a driving force for sliding laterally D1 is applied to the movable door 70 via the drive belt 79, the connecting portion 80, and the column portion 74.

[0045] The limiting part 73 is a component that restricts the movement of the movable door 70 in the thickness direction (here, the front-to-back direction D2). The limiting part 73 is provided to extend laterally D1 along the lower side of the movable door 70 in the wall portion 103. The limiting part 73 has a groove 73a extending laterally D1 on its upper surface. The movable door 70 has a pair of column portions 81 extending downward from the lower end and a pair of roller portions 82 provided on each column portion 81. The column portions 81 support the roller portions 82 so that they can rotate. The roller portions 82 are configured such that their axis of rotation extends in the vertical direction. The roller portions 82 are inserted into the groove 73a. Thus, when the movable door 70 slides in the front-to-back direction D2, the movement of the movable door 70 is restricted because the roller portions 82 are guided by the groove 73a.

[0046] like Figure 6 As shown, the radiation therapy apparatus 1 includes a detection unit 86 for detecting the position of the movable door 70. The detection unit 86 is located on the top side; that is, the detection unit 86 is positioned higher than the irradiation port 55a. Figure 6In the example shown, the radiotherapy apparatus 1 includes detection units 86A, 86B, 86C, and 86D. Detection units 86A and 86B have movable doors 70 located at position PG1 covering the irradiation port 55a. Detection units 86A and 86B are respectively positioned on the left and right sides of the irradiation port 55a. Detection unit 86C has movable doors 70 located in a retracted position PG2 on the left side. Detection unit 86C is positioned further to the left and spaced apart from detection unit 86A. Detection unit 86D has movable doors 70 located in a retracted position PG3 on the right side. Detection unit 86D is positioned further to the right and spaced apart from detection unit 86B.

[0047] like Figure 2 As shown, the radiation therapy apparatus 1 includes a control unit 150 that controls various devices and a storage unit 151 that stores various information used for control. The control unit 150 controls the irradiation unit 55, the moving mechanism 110, and the movable door 70. The control unit 150 performs treatment-related calculations related to the treatment performed by the radiation therapy apparatus 1. The storage unit 151 stores various data required by the control unit 150 to perform treatment-related calculations. The control unit 150 acquires treatment plan data, which specifies the treatment plan to be performed by the radiation therapy apparatus 1. The treatment plan includes the location of the affected area of ​​the patient 50, the posture of the patient 50, and the dose of the neutron beam N irradiated to the patient 50.

[0048] The control unit 150 calculates the orientation and position of the treatment table 60 according to the treatment plan, and determines the sliding direction of the movable door 70, for example, as... Figure 1 As shown, the control unit 150 can determine the orientation in which the treatment table 60 is configured to extend in the front-rear direction D2 in front of the irradiation port 55a. At this time, the control unit 150 can set the sliding direction of the movable door 70 to either the right or the left side.

[0049] And, as Figure 5 As shown in Figure (a), the control unit 150 can determine that the head-side end of the treatment table 60 is positioned in front of the irradiation port 55a and extends to the right. At this time, the control unit 150 determines that the sliding direction of the movable door 70 is to the left. Furthermore, as... Figure 5 As shown in Figure (b), the control unit 150 can determine that the head-side end of the treatment table 60 is positioned in front of the irradiation port 55a and extends to the left. At this time, the control unit 150 determines that the sliding direction of the movable door 70 is to the right.

[0050] The control unit 150 controls the movable door 70 to slide in a predetermined sliding direction. That is, when the movable door 70 slides to the left, the control unit 150 controls the drive unit 72 (see reference). Figure 3The control unit 150 sends a control signal to cause the movable door 70 to slide to the left. When the left-side detection unit 86C detects the movable door 70, the control unit 150 stops the sliding. When the movable door 70 slides to the right, the control unit 150 sends a control signal to the drive unit 72 (reference). Figure 3 The control unit 150 sends a control signal to slide the movable door 70 to the right. When the right-side detection unit 86D detects the movable door 70, the control unit 150 stops the sliding. The control unit 150 controls the moving mechanism 110 to configure the treatment table 60 according to the determined orientation and position. In addition, when the treatment is completed, the control unit 150 restores the treatment table 60 to its original state and returns the movable door 70 to the position of the irradiation port 55a according to the detection results of the detection units 86A and 86B.

[0051] Next, the effects of the treatment device 100 and the radiation therapy device 1 involved in this embodiment will be explained.

[0052] The treatment device 100 according to this embodiment includes: a wall portion 103 with an irradiation port 55a having an irradiation section 55; and a movable door 70, configured to face the wall portion 103 to cover the irradiation port 55a. Therefore, when not performing treatment, the movable door 70 covers the irradiation port 55a, thereby suppressing radiation leakage into the treatment chamber 101. The movable door 70 slides along the wall portion 103 to both sides of the irradiation port 55a in a horizontal direction D1. Therefore, during treatment, the movable door 70 is slid to allow radiation to be irradiated from the irradiation port 55a. Here, as a comparative example, a structure is provided where the movable door has a pair of door members, and the pair of door members simultaneously slide to the left and right sides to open. In this comparative example, the door member on one side of the horizontal direction D1 slides to one side of the horizontal direction D1, and the door member on the other side of the horizontal direction D1 slides to the other side of the horizontal direction D1. As a result, door members are present on both sides of the irradiation port 55a in the horizontal direction D1. In contrast, in the treatment device 100 of this embodiment, the structure of the movable door 70 differs from the structure in which a pair of door components slide simultaneously to the left and right sides to open. When the movable door 70 slides to one side in the horizontal direction D1, there is no movable door 70 on the other side; conversely, when the movable door 70 slides to the other side in the horizontal direction D1, there is no movable door 70 on one side. Therefore, when the treatment table 60 moves near the wall 103 (e.g., ...), ... Figure 5 In the states shown in Figures (a) and (b), the movable door 70 slides to the side opposite to the treatment table 60, thereby ensuring space for the treatment table 60. At this time, even without excessive separation between the movable door 70 and the irradiation port 55a, interference between the movable door 70 and the treatment table 60 can be suppressed. Therefore, it is not necessary to design the treatment chamber 101 to be excessively large in order to ensure space for the slidable movable door 70. Thus, the area of ​​the treatment chamber 101 can be reduced while minimizing restrictions on the movement range of the treatment table 60.

[0053] Furthermore, during the first sliding, the movable door 70 slides to the left (one side) in the horizontal direction D1 relative to the irradiation port 55a, and during the second sliding, the movable door 70 slides to the right (the other side) in the horizontal direction D1 relative to the irradiation port 55a. It is possible to achieve a state where the movable door 70 is not present on the other side during the first sliding and the movable door 70 is not present on one side during the second sliding.

[0054] The treatment device 100 may further include: a guide 71, provided on one of the upper and lower ends of the movable door 70, for guiding the movable door 70 to slide in the transverse direction D1; and a limiting part 73, provided on the other of the upper and lower ends of the movable door 70, for limiting the movement of the movable door 70 in the front-back direction D2 (the thickness direction of the movable door). This allows the movable door 70 to slide smoothly and without wobbling.

[0055] The treatment device 100 also includes a treatment table 60 for placing the irradiated body and a control unit 150 for performing treatment-related calculations. The control unit 150 can calculate the orientation and position of the treatment table 60 according to the treatment plan and determine the sliding direction of the movable door 70. Thus, the control unit 150 can determine the operation of the treatment table 60 and the movable door 70 according to the treatment plan.

[0056] The control unit 150 can control the movable door 70 to slide in a predetermined sliding direction. In this case, the movable door 70 can be automatically controlled.

[0057] The treatment device 100 also includes a detection unit 86 for detecting the position of the movable door 70, and the detection unit 86 can be located on the top side. In this way, by positioning the detection unit 86 at a higher position, it is possible to suppress the detection unit 86 from erroneously detecting the operator or other components within the treatment room 101.

[0058] The radiation can be a neutron beam. In this case, the above-mentioned effects can be achieved during neutron capture therapy treatment, in which the range of movement of the treatment table 60 is increased.

[0059] The radiotherapy device 1 according to this embodiment is a radiotherapy device 1 for treating an irradiated body by irradiating it with radiation. It includes: an irradiation part 55 for irradiating radiation; and a movable door 70, which is configured to face the wall part 103 on which the irradiation port 55a is provided, so as to cover the irradiation port 55a of the irradiation part 55. The movable door 70 slides along the wall part 103 to both sides of the lateral direction D1 of the irradiation port 55a.

[0060] According to the radiation therapy device 1, the same therapeutic effect as the aforementioned treatment device 100 can be achieved.

[0061] The present invention is not limited to the embodiments described above.

[0062] For example, Figure 1 and Figure 2 The structure of the treatment equipment and radiation therapy device shown is only one example and can be modified appropriately. Furthermore, the drive mechanism of the movable door 70 is not limited to... Figure 3 and Figure 4 The structure shown can be modified as appropriate.

Claims

1. A treatment apparatus that irradiates a subject with a radiation to perform treatment, the treatment apparatus comprising: an irradiation unit that irradiates the radiation; a wall unit that is provided with an irradiation port of the irradiation unit; and a movable door that is provided so as to oppose the wall unit in a manner of covering the irradiation port, wherein the movable door slides to both sides in a lateral direction of the wall unit with respect to the irradiation port.

2. The treatment apparatus according to claim 1, wherein in a first sliding, the movable door slides to one side in the lateral direction with respect to the irradiation port, and in a second sliding, the movable door slides to the other side in the lateral direction with respect to the irradiation port.

3. The treatment apparatus according to claim 1, further comprising: a guide unit that is provided at one of an upper end side and a lower end side of the movable door, and that guides the movable door to slide in the lateral direction; and a restriction unit that is provided at the other of the upper end side and the lower end side of the movable door, and that restricts movement of the movable door in a thickness direction.

4. The treatment apparatus according to claim 1, further comprising: a treatment table on which the subject is placed; and a control unit that performs a calculation related to treatment, wherein the control unit calculates an orientation and a position of the treatment table according to a treatment plan, and determines a sliding direction of the movable door.

5. The treatment apparatus according to claim 4, wherein the control unit controls the movable door so as to slide the movable door in the determined sliding direction.

6. The treatment apparatus according to claim 1, further comprising a detection unit that detects a position of the movable door, wherein the detection unit is provided at a top side.

7. The treatment apparatus according to claim 1, wherein the radiation is a neutron beam.

8. A radiation treatment apparatus that irradiates a subject with a radiation to perform treatment, the radiation treatment apparatus comprising: an irradiation unit that irradiates the radiation; and a movable door that is provided so as to oppose a wall unit in a manner of covering an irradiation port of the irradiation unit, wherein the movable door slides to both sides in a lateral direction of the wall unit with respect to the irradiation port. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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