JP6933507B2 - Radiation therapy equipment - Google Patents

Description

The embodiment according to the present invention relates to a radiotherapy apparatus.

In a radiotherapy device that treats an affected area of a patient, the radiotherapy device may go down due to a failure of a component or the like. If the radiotherapy device goes down, not only will it not be possible to treat the patient scheduled for treatment on the day, but it will also become a credit problem for medical institutions such as hospitals where the radiotherapy device is installed and for manufacturers of the radiotherapy device. It is a big problem to do. In particular, in treatment using a radiotherapy device, it is common to irradiate one patient in multiple times for a long period of time. Therefore, the longer the system down time of the radiotherapy device, the more the treatment. You will be troubled by adjusting and reviewing the schedule.

Therefore, in order to shorten the system down time of the radiotherapy device as much as possible, the medical institution may take measures to leave a hint for repair in the error log. In addition, the medical institution may take measures to immediately restore the radiotherapy device by arranging and placing parts that frequently fail in advance and replacing the failed parts. That is, the radiotherapy apparatus according to the prior art is related to the response after the system goes down, and does not prevent the system down.

Japanese Unexamined Patent Publication No. 9-99110

An object to be solved by the present invention is to provide a radiotherapy apparatus capable of preventing a system down.

The radiotherapy apparatus of the present embodiment is based on a mobile device including a movable mobile body, a calculation means for calculating movement information which is at least one of the movement speed and reaction time of the moving body, and the movement information. It has a determination means for determining whether or not it is time to replace the constituent articles of the mobile device.

The external view which shows the bed apparatus and the treatment main body apparatus of the radiotherapy apparatus which concerns on this embodiment. The block diagram which shows the whole of the radiotherapy apparatus which concerns on this embodiment. The figure which shows the graph for demonstrating the movement amount of the top plate, the movement start time, the movement end time, the pressing time, and the pressing release time in the radiotherapy apparatus which concerns on this embodiment. The block diagram which shows the function of the radiotherapy apparatus which concerns on this embodiment. The figure which shows an example with the movement information of the moving body in the radiotherapy apparatus which concerns on this embodiment. The figure which shows the operation of the radiotherapy apparatus which concerns on this embodiment as a flowchart. The figure for demonstrating the operation in the radiotherapy apparatus which concerns on this embodiment. The figure which shows the relationship between the mobile device and the exchange article as a list in the radiotherapy apparatus which concerns on this embodiment. The figure which shows the transition of the movement information in the radiotherapy apparatus which concerns on this embodiment as a graph.

The radiotherapy apparatus according to this embodiment will be described with reference to the accompanying drawings.

FIG. 1 is an external view showing a bed device and a treatment main body device of the radiotherapy device according to the present embodiment. FIG. 2 is a configuration diagram showing the entire radiation therapy apparatus according to the present embodiment.

1 and 2 show a radiotherapy apparatus 1 according to the present embodiment, which treats an affected portion of a subject (for example, a patient) U by irradiating it with radiation such as an X-ray, an electron beam, or a particle beam. show. Hereinafter, a case where the radiation therapy device 1 irradiates the affected portion of the patient U with radiation to perform treatment will be described. The radiation therapy device 1 includes a console device 10, a sleeper device 20, and a treatment main body device 30. The console device 10 is installed in a control room adjacent to the treatment room. The sleeper device 20 and the treatment main body device 30 are installed in the treatment room (see FIG. 1).

The console device 10 of the radiotherapy device 1 can communicate with the treatment planning device (not shown) and other devices 20 and 30 of the radiotherapy device 1 via a network such as a LAN (Local Area Network) of the hospital backbone. It is connected like this.

The console device 10 includes a processing unit (for example, a processing circuit) 11, a storage unit (for example, a storage circuit) 12, an input unit (for example, an input circuit) 13, a display unit (for example, a display) 14, and the like, and is a sleeper device. 20 and the operation of the treatment main body device 30 are controlled.

The processing circuit 11 means a processing circuit such as a dedicated or general-purpose CPU (Central Processing Unit) or MPU (Micro Processor Unit), an application specific integrated circuit (ASIC), and a programmable logic device. do. Examples of the programmable logic device include a simple programmable logic device (SPLD: Simple Programmable Logic Device), a compound programmable logic device (CPLD: Complex Programmable Logic Device), and a field programmable gate array (FPGA: Field Programmable Gate Array). The circuit can be mentioned. The processing circuit 11 realizes a function described later by reading and executing a program stored in the storage circuit 12 or directly incorporated in the processing circuit 11.

Further, the processing circuit 11 may be composed of a single processing circuit or a combination of a plurality of independent processing circuits. In the latter case, the plurality of storage circuits 12 may store programs corresponding to the functions of the plurality of processing circuits, respectively, or one storage circuit 12 may store a program corresponding to the functions of the plurality of processing circuits. It may be something to remember.

The storage circuit 12 is composed of a semiconductor memory element such as a RAM (Random Access Memory) and a flash memory (Flash Memory), a hard disk, an optical disk, and the like. The storage circuit 12 may be composed of a portable medium such as a USB (Universal Serial Bus) memory and a DVD (Digital Video Disk). The storage circuit 12 stores various processing programs (including an OS (Operating System) and the like in addition to the application program) used in the processing circuit 11, data necessary for executing the program, and image data. In addition, the OS may include a GUI (Graphical User Interface) that makes extensive use of graphics for displaying information on the display 14 to the operator and allows basic operations to be performed by the input circuit 13.

The input circuit 13 is a circuit for inputting a signal from an input device that can be operated by an operator, and here, it is assumed that the input device itself is also included in the input circuit 13. Input devices include pointing devices (eg, mice), keyboards, various buttons, and the like. Further, the input device may include a movement switch for instructing the movement start and movement end to the moving body P described later. When the input device is operated by the operator, the input circuit 13 generates an input signal corresponding to the operation and outputs the input signal to the processing circuit 11. The console device 10 may include a touch panel in which the input device is integrally configured with the display 14.

The display 14 is a display device such as a liquid crystal display panel, a plasma display panel, and an organic EL (Electro Luminescence) panel. The display 14 displays the image data generated under the control of the processing circuit 11.

Since the treatment planning device (not shown) generates the treatment planning information in advance based on the data such as volume data generated by imaging the patient to be treated and the operation input by the planner, the console device. 10 controls the operation of the devices 20 and 30 in order to treat the affected part of the patient U according to the treatment plan information. Here, the volume data used for generating the treatment plan information is data generated in advance by an imaging device (not shown) capable of visualizing the internal structure of the patient. Volume data is a collection of a plurality of voxels arranged in a three-dimensional direction.

Examples of the imaging device include an X-ray diagnostic device, an X-ray CT (Computed Tomography) device, a magnetic resonance imaging (MRI) device, a PET (Positron Emission Tomography) device, a SPECT (Single Photon Emission Computed Tomography) device, and the like. There is.

The sleeper device 20 of the radiotherapy device 1 is connected to the treatment planning device (not shown) and the other devices 10 and 30 of the radiotherapy device 1 so as to be able to communicate with each other via a network such as a LAN of the hospital backbone. NS.

The sleeper device 20 includes a sleeper control circuit 21, a movement switch 22, a sleeper power circuit 23, a top plate P1, and a position detection sensor Q1. Examples of the position detection sensor include an encoder, a potentiometer, a laser displacement sensor, and the like.

The sleeper control circuit 21 includes a processing circuit and a storage circuit (not shown). The sleeper control circuit 21 controls the sleeper power circuit 23 under the instruction of the console device 10 or the movement switch 22, and causes the radiation therapy to be executed with the operation of the treatment main body device 30. The sleeper control circuit 21 is a control circuit that conditions the sleeper power circuit 23 and the like under the instruction of the console device 10 or the movement switch 22.

The movement switch 22 is an input device for instructing the top plate P1 as the moving body P, which will be described later, to start and end the movement. The movement switch 22 has a configuration capable of instructing the start of movement of the top plate P1 when pressed by the operator and instructing the end of movement of the top plate P1 when pressed and released by the operator. The mobile switch 22 is not limited to such a configuration. For example, the movement switch 22 may include two independent switches that can instruct the start and end of the movement of the top plate P1.

Under the control of the sleeper control circuit 21, the sleeper power circuit 23 supplies electricity to each power unit (motor, etc.) of the top plate P1 to move the top plate P1 in the x-axis direction, the y-axis direction, and the z-axis direction. It is a power circuit that slides and moves along the top plate P1 and rotates and moves the top plate P1 about the x-axis direction, the y-axis direction, and the z-axis direction.

Here, the sleeper device 20 includes a top plate P1 as a moving body P, which will be described later, and a position detection sensor Q1 (shown in FIG. 4) that detects the amount of movement of the top plate P1. The position detection sensor Q1 is a sensor that detects the movement amount (slide movement amount and rotation movement amount) of the top plate P1 by converting the mechanical displacement amount into an electric signal and processing the electric signal.

The bed control circuit 21 of the bed device 20 can transmit the movement amount A1 (shown in FIG. 3) of the top plate P1 detected by the position detection sensor Q1 to the console device 10. The sleeper control circuit 21 has a movement start time B1 (shown in FIG. 3) indicating the time when the top plate P1 starts moving and a movement end time C1 (shown in FIG. 3) indicating the time when the top plate P1 finishes moving. And the pressing time D1 of the moving switch 22 relating to the top plate P1 (shown in FIG. 3) and the pressing release time E1 of the moving switch 22 relating to the top plate P1 (shown in FIG. 3) can be transmitted to the console device 10. ..

FIG. 3 is a diagram showing a graph for explaining the movement amount A1, the movement start time B1, the movement end time C1, the pressing time D1, and the pressing release time E1 of the top plate P1 in the radiotherapy apparatus 1.

The horizontal axis of FIG. 3 indicates time, and the vertical axis of FIG. 3 indicates the position (z position) of the top plate P1 movable in the z-axis direction in the z-direction. The difference between the z positions before and after the movement of the top plate P1 is the movement amount A1 of the top plate P1. The time at which the top plate P1 starts moving after the movement switch 22 is pressed is the movement start time B2. Further, the time when the top plate P1 ends the movement after the pressing of the movement switch 22 is released is the movement end time C3. Similar to the movement amount A1 in the slide movement of the top plate P1 in the z-axis direction, the movement amount of the top plate P1 in the slide movement in the x-axis direction, the movement amount of the top plate P1 in the slide movement in the y-axis direction, and the movement amount of the top plate P1 in the y-axis direction. The amount of movement in the rotational movement of the top plate P1 can also be calculated.

Returning to the description of FIGS. 1 and 2, the treatment main device 30 of the radiotherapy device 1 can communicate with other devices 10 and 20 of the radiotherapy device 1 via a network such as a LAN of the hospital backbone. Connected to.

The treatment main body device 30 includes a treatment control circuit 31, a mobile switch 32, a gantry device 37, a high voltage power supply 38, a radiation source 39, and a diaphragm device 40. The treatment main body device 30 is, for example, a Linac (a radiotherapy device that performs treatment by irradiating radiation based on treatment plan information). Since the mobile switch 32 has the same configuration as the input circuit 13 of the console device 10, the description thereof will be omitted.

The treatment control circuit 31 includes a processing circuit and a storage circuit (not shown). The treatment control circuit 31 includes a gantry device 37, a high voltage power supply 38, a radiation source 39, and a throttle device 40 according to the treatment plan information generated by the treatment planning device (not shown) under the instruction of the console device 10 or the mobile switch 32. By controlling such as, the irradiation of radiation for treatment is executed with the operation of the sleeper device 20. The treatment control circuit 31 is a control circuit that conditions for moving the gantry device 37, the diaphragm device 40, and the like under the instruction of the console device 10 or the movement switch 32.

The movement switch 32 is an input device for instructing the rotary pedestal P2, the diaphragm blade P3, and the diaphragm pedestal P4 (shown in FIG. 4) as the moving body P, which will be described later, to start and end the movement, respectively. The movement switch 32 can instruct the start of movement of the moving bodies P2 to P4 when pressed by the operator, and can instruct the end of movement of the moving bodies P2 to P4 when the pressure is released by the operator. To be equipped. The mobile switch 32 is not limited to such a configuration.

The gantry device 37 includes a rotary gantry P2 (shown in FIG. 4) that integrally holds the radiation source 39 and the diaphragm device 40, and a position detection sensor Q2 (shown in FIG. 4). The rotary pedestal P2 rotates around the patient U. The treatment main body device 30 may have an imaging function such as an X-ray tube and an X-ray detector. Further, the direction parallel to the rotation center axis of the rotary base P2 is the z-axis direction (longitudinal direction of the top plate P1), and the plane orthogonal to the z-axis direction is the x-axis direction (horizontal direction of the top plate P1) and the y-axis direction. Defined in (vertical direction).

Here, the gantry device 37 includes a rotary pedestal P2 as a moving body P, which will be described later, and a position detection sensor Q2 (shown in FIG. 4) that detects the amount of movement of the rotary pedestal P2. The position detection sensor Q2 is a sensor that detects the amount of movement of the rotary gantry P2 as the amount of rotational movement of the rotary gantry P2 by converting the amount of mechanical displacement into an electric signal and processing the electric signal.

The treatment control circuit 31 of the treatment main body device 30 can transmit the movement amount A2 of the rotary pedestal P2 detected by the position detection sensor Q2 to the console device 10. In the treatment control circuit 31, the movement start time B2 indicating the time when the rotary gantry P2 starts moving, the movement end time C2 indicating the time when the rotary gantry P2 finishes moving, and the pressing time of the movement switch 32 relating to the rotary gantry P2 It is possible to transmit D2 and the pressing release time E2 of the movement switch 32 related to the rotary gantry P2 to the console device 10. The movement amount A2, the movement start time B2, the movement end time C2, the pressing time D2, and the pressing release time E2 of the rotary stand P2 are the movement amount A1 and the movement start time B1 of the top plate P1 described with reference to FIG. , The movement end time C1, the pressing time D1, and the pressing release time E1 can be expressed in the same manner.

The high-voltage power supply 38 supplies the power required for irradiation of radiation to the radiation source 39 under the control of the treatment control circuit 31.

The radiation source 39 generates radiation according to the electric power supplied from the high voltage power source 38. The radiation source 39 can generally generate MV class radiation, for example.

The diaphragm device 40 includes a diaphragm blade P3 (shown in FIG. 4) and a position detection sensor Q3 (shown in FIG. 4). The diaphragm blade P3 adjusts the irradiation range of the radiation emitted from the radiation source 39 under the control of the treatment control circuit 31. That is, the irradiation range of the radiation can be changed by adjusting the opening of the diaphragm blade P3 by the control by the treatment control circuit 31.

The squeezing device 40 realizes the irradiation shape and dose distribution based on the treatment plan information. In recent years, a multi-leaf collimator (MLC) capable of forming a dose distribution corresponding to a complicated tumor shape by a plurality of movable leaves (squeezing blades P3) is often used as the diaphragm device 40. The treatment main body device 30 adjusts the irradiation amount of radiation by the irradiation field formed by the diaphragm device 40, and eliminates or reduces the irradiation range.

Here, the diaphragm device 40 includes a diaphragm blade P3 as a moving body P, which will be described later, and a position detection sensor Q3 (shown in FIG. 4) for detecting the amount of movement of the diaphragm blade P3. The position detection sensor Q3 is a sensor that detects the amount of movement of the diaphragm blade P3 as the amount of slide movement of the diaphragm blade P3 by converting the amount of mechanical displacement into an electric signal and processing the electric signal.

The treatment control circuit 31 of the treatment main body device 30 can transmit the movement amount A3 of the diaphragm blade P3 detected by the position detection sensor Q3 to the console device 10. The treatment control circuit 31 has a movement start time B3 indicating the time when the diaphragm blade P3 starts moving, a movement end time C3 indicating the time when the diaphragm blade P3 finishes moving, and a pressing time of the movement switch 32 relating to the diaphragm blade P3. D3 and the pressing release time E3 of the movement switch 32 related to the diaphragm blade P3 can be transmitted to the console device 10. The movement amount A3 of the aperture blade P3, the movement start time B3, the movement end time C3, the pressing time D3, and the pressing release time E3 are the movement amount A1 and the movement start time B1 of the top plate P1 described with reference to FIG. , The movement end time C1, the pressing time D1, and the pressing release time E1 can be expressed in the same manner.

Further, the diaphragm device 40 includes a diaphragm stand P4 as a moving body P, which will be described later, and a position detection sensor Q4 (shown in FIG. 4) for detecting the amount of movement of the diaphragm stand P4. The position detection sensor Q4 is a sensor that converts the amount of mechanical displacement into an electric signal and processes the electric signal to detect the amount of movement of the diaphragm pedestal P4 as the amount of rotational movement of the diaphragm pedestal P4.

The treatment control circuit 31 of the treatment main body device 30 can transmit the movement amount A4 of the throttle pedestal P4 detected by the position detection sensor Q4 to the console device 10. In the treatment control circuit 31, the movement start time B4 indicating the time when the aperture pedestal P4 starts moving, the movement end time C4 indicating the time when the aperture pedestal P4 ends moving, and the pressing time of the movement switch 32 related to the aperture pedestal P4 D4 and the pressing release time E4 of the movement switch 32 related to the diaphragm stand P4 can be transmitted to the console device 10. The movement amount A4, the movement start time B4, the movement end time C4, the pressing time D4, and the pressing release time E4 of the drawing stand P4 are the movement amount A1 and the movement start time B1 of the top plate P1 described with reference to FIG. , The movement end time C1, the pressing time D1, and the pressing release time E1 can be expressed in the same manner.

FIG. 4 is a block diagram showing the functions of the radiotherapy device 1.

When the processing circuit 11 of the console device 10 executes the program, the console device 10 has a calculation means (for example, a calculation function) 11a, a judgment means (for example, a judgment function) 11b, and a presentation means (for example, a presentation function) 11c. Functions as. Although the functions 11a to 11c have been described as functioning by executing the program, the functions 11a to 11c are not limited to that case. All or part of the functions 11a to 11c may be provided in the console device 10 as hardware such as an ASIC.

The calculation function 11a includes a function of calculating movement information which is at least one of the movement speed and the reaction time of the moving body P such as the top plate P1 included in the moving device. The calculation function 11a may include a function of registering the movement information of the moving body P in the storage circuit 12. As a result, the storage circuit 12 can store a plurality of movement information in time series.

Here, the moving device is a device including a moving body P that can be moved by sliding movement, rotational movement, or the like, and includes, for example, at least one of a sleeper device 20, a gantry device 37, and a diaphragm device 40. .. The sleeper device 20 as the moving device includes the top plate P1 as the moving body P, the gantry device 37 includes the rotary pedestal P2 as the moving body P, and the diaphragm device 40 includes the diaphragm blades P3 and the diaphragm pedestal P4 as the moving body P. including.

FIG. 5 is a diagram showing an example of movement information of the moving body P in the radiotherapy device 1.

As shown in FIG. 5, examples of the moving device include a sleeper device 20, a gantry device 37, and a diaphragm device 40. The sleeper device 20 includes a top plate P1 as the moving body P. The movement information of the top plate P1 includes the moving speed of the top plate P1, the reaction time from the pressing of the moving switch 22 on the top plate P1 to the start of movement of the top plate P1, and the pressing of the moving switch 22 on the top plate P1. The reaction time from the opening to the end of the movement of the top plate P1 can be mentioned.

Further, the gantry device 37 includes a rotary gantry P2 as the moving body P. The movement information of the rotary mount P2 is as shown in FIG. The diaphragm device 40 includes a diaphragm blade P3 and a diaphragm stand P4 as the moving body P. The movement information of the diaphragm blade P3 and the diaphragm stand P4 is as shown in FIG. The specific calculation method of the movement information of the moving body P such as the top plate P1 will be described later with reference to FIGS. 6 to 8.

Returning to the description of FIG. 4, the determination function 11b includes a function of determining whether or not it is time to replace the constituent articles of the mobile device based on the movement information of the moving body P calculated by the calculation function 11a. When the radiotherapy device 1 causes the system to go down, it is considered that there is some modulation in the movement of the moving body P of the mobile device provided in the radiotherapy device 1. Therefore, the determination function 11b detects the modulation of the movement of the moving body P based on the movement information related to the movement of the moving body P, and determines the replacement time of the constituent articles of the moving device including the moving body P in which the movement is modulated. Is what you do.

As shown in FIG. 4, the console device 10 can include functions 11a to 11c. However, it is not limited to this case. For example, when the mobile device is the bed device 20, the bed control circuit 21 of the bed device 20 may include the functions 11a to 11c. Further, when the moving device is the gantry device 37 or the squeezing device 40, the treatment control circuit 31 of the treatment main body device 30 may include the functions 11a to 11c.

FIG. 6 is a diagram showing the operation of the radiotherapy device 1 as a flowchart. FIG. 7 is a diagram for explaining the operation of the radiotherapy device 1. As the mobile device, at least one of the sleeper device 20, the gantry device 37, and the diaphragm device 40 may be adopted, but unless otherwise specified, the case where the mobile device is only the sleeper device 20 will be described below. ..

The bed control circuit 21 of the bed device 20 as a moving device recognizes the pressing of the moving switch 22 for sliding or rotating the top plate P1 by the operator (step ST1). The sleeper control circuit 21 starts the movement of the top plate P1 via the sleeper power circuit 23 according to the recognition in step ST1 (step ST2).

The sleeper control circuit 21 determines whether or not the operator has recognized the pressing and releasing of the movement switch 22 (step ST3). If NO is determined in step ST3, that is, when it is determined that the pressing release of the moving switch 22 is not recognized and the pressing is maintained, the sleeper control circuit 21 recognizes the pressing release of the moving switch 22. Wait until On the other hand, when the determination in step ST3 is YES, that is, when it is determined that the pressing release of the movement switch 22 is recognized, the sleeper control circuit 21 is the top plate started by step ST2 via the sleeper power circuit 23. The movement of P1 is completed (step ST4).

The sleeper control circuit 21 is started by step ST2 and ends by the movement amount A1 of the top plate P1 detected by the position detection sensor Q1, the movement start time B1 of the top plate P1 started by step ST2, and the step ST4. The movement end time C1 of the top plate P1 is transmitted to the console device 10. Further, the sleeper control circuit 21 transmits the pressing time D1 of the moving switch 22 recognized in step ST1 and the pressing release time E1 of the moving switch 22 recognized in step ST3 to the console device 10. The calculation function 11a of the console device 10 performs the movement amount A1 of the top plate P1, the movement start time B1, the movement end time C1, the pressing time D1 of the moving switch 22, and the pressing release of the moving switch 22 from the sleeper device 20. Acquire the time E1 (step ST5). The acquisition of the movement amount A1 and the like of the top plate P1 in step ST5 may be performed every time the top plate P1 is moved, or may be performed at regular intervals, for example, every day after the end of the treatment on that day.

Step ST5 will be described with reference to FIG. The calculation function 11a acquires the movement amount A1 of the top plate P1 from the bed control circuit 21 of the bed device 20. The calculation function 11a uses the bed control circuit 21 of the sleeper device 20 to perform the movement start time B1 of the top plate P1, the movement end time C1 of the top plate P1, the pressing time D1 of the moving switch 22, and the pressing release of the moving switch 22. Acquire the time E1 and.

Returning to the description of FIG. 6, the calculation function 11a includes the movement amount A1 of the top plate P1 acquired in step ST5, the movement start time B1 of the top plate P1, the movement end time C1 of the top plate P1, and the movement switch. The movement information of the top plate P1 is calculated based on the pressing time D1 of 22 and the pressing release time E1 of the movement switch 22 (step ST6).

Step ST6 will be described with reference to FIG. The calculation function 11a calculates the movement speed F1 of the top plate P1 from the acquired movement amount A1 of the top plate P1, the movement start time B1, and the movement end time C1. Further, the calculation function 11a determines the reaction time G1 from the acquired movement start time B1 of the top plate P1 and the pressing time D1 of the moving switch 22 to the pressing of the moving switch 22 until the top plate P1 starts moving. It is calculated, or the reaction time G1 from the pressing release of the moving switch 22 to the end of the movement of the top plate P1 is calculated from the movement end time C1 of the top plate P1 and the pressing release time E1 of the moving switch 22.

Even when the moving body P includes the rotary stand P2, the diaphragm blade P3, and the diaphragm stand P4, the method of calculating the movement information is the same as that of the top plate P1.

Returning to the description of FIG. 6, the calculation function 11a registers the movement information of the top plate P1 calculated in step ST6 in the storage circuit 12 (step ST7). The determination function 11b acquires the movement information of the top plate P1 from the storage circuit 12 (step ST8).

The determination function 11b determines whether or not it is time to replace the constituent articles of the sleeper device 20 based on the movement information of the top plate P1 acquired in step ST8 (step ST9).

Step ST9 will be described with reference to FIG. The determination function 11b calculates the degree of deterioration H1 of the moving speed of the top plate P1. The degree of deterioration H1 is calculated based on the calculated moving speed F1 of the top plate P1 and the specification condition (spec) f1. Further, the determination function 11b calculates the degree of deterioration J1 of the reaction time of the top plate P1. The degree of deterioration J1 is calculated based on the calculated reaction time G1 of the top plate P1 and the specification condition g1. If it is determined that the degree of deterioration does not meet the determination criteria, it is determined that it is time to replace the constituent articles of the mobile device.

Here, the determination criteria can be set in advance by the manufacturer of the radiotherapy device 1, or can be set by an arbitrary numerical value by a medical institution (user) such as a hospital in which the radiotherapy device 1 is arranged. ..

Here, when the moving body P is the top plate P1, the movement of the top plate P1 includes the slide movement and the rotational movement of the top plate P1. In that case, the determination criteria may be provided separately for the slide movement and the rotational movement, or may be common to the slide movement and the rotational movement. Further, the slide movement of the top plate P1 includes a plurality of slide movements in the x-axis direction, the y-axis direction, the z-axis direction, and the like. In that case, the determination criteria may be provided separately for each movement, or may be common to the slide movement and the rotational movement. Further, the rotational movement of the top plate P1 includes a plurality of rotational movements about the x-axis direction, the y-axis direction, the z-axis direction, and the like. In that case, the determination criteria may be provided separately for each movement, or may be common to the slide movement and the rotational movement.

Even when the moving body P includes the rotary stand P2, the diaphragm blades P3, and the diaphragm stand P4, the method of calculating the degree of deterioration is the same as that of the top plate P1.

Returning to the explanation of FIG. 6, when YES in step ST9, that is, when it is determined that the degree of deterioration does not satisfy the determination criteria and it is time to replace the constituent articles of the bed device 20, the presentation function 11c is the bed device 20. It is determined that all or part of the constituent articles need to be replaced, and the replacement articles are presented (step ST10). For example, in step ST10, the presentation function 11c displays the replacement article among the constituent articles of the sleeper device 20 on the display 14. Further, for example, the presentation function 11c may notify the monitoring system (not shown) or the service person that the constituent articles of the sleeper device 20 need to be replaced.

FIG. 8 is a diagram showing as a list the relationship between the mobile device and the replacement article in the radiotherapy device 1.

As shown in FIG. 8, a replacement article is preset for each movement information of the moving device. For example, when it is determined that the degree of deterioration does not satisfy the judgment criteria in the moving speed of the top plate P1, among the constituent articles of the sleeper device 20 including the top plate P1, articles 20-1, 20-2, ... Are replaced. Presented as an article. The exchanged articles may overlap depending on the moving speed of the moving device and the reaction time.

Returning to the description of FIG. 6, if NO, that is, the degree of deterioration satisfies the determination criterion and it is determined that it is not the time to replace the constituent articles of the sleeper device 20, the presentation function 11c ends the operation.

According to the radiotherapy device 1, it is possible to determine whether or not it is time to replace the constituent articles of the mobile device such as the sleeper device 20, so that it is possible to prevent the system from going down. Therefore, according to the radiotherapy device 1, treatment can be performed according to the originally planned treatment schedule.

(First modification)
With respect to the slide movement of the moving body P, for example, the top plate P1, steps ST1 to ST6 shown in FIG. 6 are performed m (m = 2,3, ...) M (m = 2,3, ...). M movement information related to m slide movements is stored (step ST7 in FIG. 6). Further, as for the rotational movement of the top plate P1, steps ST1 to ST6 are performed n (n = 2, 3, ...) N times, so that the storage circuit 12 has n times related to the rotational movement of the top plate P1 about n times. The movement information of is stored (step ST7 in FIG. 6). As a result, the determination function 11b can acquire a plurality of movement information on the top plate P1 from the storage circuit 12 (step ST8 in FIG. 6).

FIG. 9 is a graph showing the transition of movement information in the radiotherapy device 1.

The horizontal axis of FIG. 9 indicates the number of movements, and the vertical axis of FIG. 9 indicates movement information (for example, movement information F1 shown in FIG. 7). The actual measurement transition (solid line curve) of the movement information is expressed based on the movement information of m pieces related to the movement of the top plate P1 up to the mth time. In addition, the predicted transition of the movement information (broken line curve) is expressed as an extension of the transition of the movement information. Then, based on the intersection of the predicted transition of the movement information and the threshold value, the replacement time of the constituent articles of the sleeper device 20 including the top plate P1 is predicted to be the time of the Mth movement.

According to the first modification of the radiotherapy device 1, it is possible to predict the replacement time of the constituent articles of the moving device such as the sleeper device 20, so that it is possible to prevent the system from going down. Therefore, according to the first modification of the radiotherapy apparatus 1, the treatment can be performed according to the originally planned treatment schedule.

Further, according to the first modification of the radiotherapy device 1, it is possible to predict the replacement time of the constituent articles of the mobile device such as the sleeper device 20, so that the annual repair budget for the medical institution equipped with the radiotherapy device 1 can be predicted. Can be calculated, and it is also possible to support hospital management such as budgeting.

(Second modification)
In the above description, as shown in FIG. 7, the movement speed is calculated based on the movement amount A1 of the top plate P1, the movement start time B1 of the top plate P1, and the movement end time C1 of the top plate P1. explained. However, it is not limited to that case. For example, a speed sensor may be provided separately, and the speed sensor may be configured to detect the slide movement speed and the rotation movement speed of the top plate P1.

According to the second modification of the radiotherapy device 1, it is possible to predict the replacement time of the constituent articles of the moving device such as the sleeper device 20, so that it is possible to prevent the system from going down. Therefore, according to the second modification of the radiotherapy apparatus 1, the treatment can be performed according to the originally planned treatment schedule.

(Third modification example)
The calculation function 11a (shown in FIG. 4) may calculate system information in addition to movement information. The system information includes the reaction time from the power-on of the radiotherapy device 1 to the completion of system startup, and the reaction time from the shutdown instruction of the radiotherapy device 1 (for example, pressing the shutdown button) to the termination of the system. The reaction time from the start instruction of radiation irradiation to the start of radiation irradiation and the reaction time from the end instruction of radiation irradiation to the end of radiation irradiation are at least one of them. The determination function 11b determines whether or not it is time to replace the constituent articles of the mobile device such as the sleeper device 10 based on the movement information and the system information. For example, if the determination function 11b does not meet the determination criteria (shown in FIG. 7) for at least one of the movement information and the system information, the determination function 11b may replace the replacement parts among the constituent parts of the movement device according to a preset list. Can be urged to.

Further, the calculation function 11a (shown in FIG. 4) is a sensor that detects at least one of the humidity, temperature, and atmospheric pressure of the treatment room in which the radiotherapy device 1 is arranged, in addition to the movement information, from a sensor. Environmental information may be acquired. The determination function 11b determines whether or not it is time to replace the constituent articles of the mobile device such as the sleeper device 20 based on the movement information and the environmental information. For example, with respect to the slide movement of the top plate P1, when steps ST1 to ST6 shown in FIG. 6 are performed m times, the storage circuit 12 is provided with m movement information regarding the movement of the top plate P1 up to the mth time as environmental information. It is stored in association with. The determination function 11b uses only the movement information corresponding to the close environmental information among the m stored movement information as the determination material of the exchange time.

According to the third modification of the radiotherapy device 1, it is possible to predict the replacement time of the constituent articles of the moving device such as the sleeper device 20, so that it is possible to prevent the system from going down. Therefore, according to the third modification of the radiotherapy apparatus 1, the treatment can be performed according to the originally planned treatment schedule.

According to the radiotherapy apparatus of at least one embodiment described above, it is possible to prevent the system from going down.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Radiation therapy device 11 ... Processing circuit 11a ... Calculation means (calculation function)
11b ... Judgment means (judgment function)
20 ... Sleeping device 22 ... Moving switch 30 ... Treatment main body device 32 ... Moving switch 37 ... Stand device 40 ... Aperture device P1 ... Top plate P2 ... Rotating stand P3 ... Squeezing blade P4 ... Aperture stand

Claims (14)

Mobile devices, including mobiles that can be moved, and
A calculation means for calculating movement information representing the reaction time of the moving body and registering the movement information in a time series.
A storage means in which the movement information and the exchanged article of the moving body are associated and stored,
Based on the actual measurement transition of the movement information registered in the time series, a determination means for determining the exchange time of the exchanged article of the moving body stored in association with the movement information by the storage means, and a determination means.
Radiation therapy device with. Comprises presenting means for presenting the replacement timing, which is determined by said determining means,
The radiotherapy apparatus according to claim 1. The presenting means presents a replacement article for the moving body.
The radiotherapy apparatus according to claim 2. The moving device is a diaphragm device including a diaphragm blade as the moving body.
The radiotherapy apparatus according to any one of claims 1 to 3. The calculation means uses the movement information as the movement information.
And the reaction time from the start indication of the sliding movement of the front Symbol diaphragm blades to said aperture blade starts sliding,
The reaction time from the instruction to end the slide movement of the diaphragm blade to the end of the slide movement of the diaphragm blade, and
Calculate at least one of them,
The radiotherapy apparatus according to claim 4. The moving device is a drawing device including a drawing stand as the moving body.
The radiotherapy apparatus according to any one of claims 1 to 5. The calculation means uses the movement information as the movement information.
And the reaction time from the start indication of the rotational movement of the front Symbol diaphragm mount to said aperture frame starts rotating movement,
The reaction time from the instruction to end the rotational movement of the diaphragm stand to the end of the rotational movement of the diaphragm stand, and
Calculate at least one of them,
The radiotherapy apparatus according to claim 6. The moving device is a pedestal device that irradiates a treatment line, including a rotating pedestal as the moving body.
The radiotherapy apparatus according to any one of claims 1 to 7. The calculation means uses the movement information as the movement information.
And the reaction time from the start indication of the rotational movement of the front Symbol rotating gantry to the rotating gantry starts rotating movement,
The reaction time from the end instruction of the rotary movement of the rotary pedestal to the end of the rotary movement of the rotary pedestal, and
Calculate at least one of them,
The radiotherapy apparatus according to claim 8. The moving device is a sleeper device including a top plate as the moving body.
The radiotherapy apparatus according to any one of claims 1 to 9. The calculation means uses the movement information as the movement information.
And the reaction time from the start indication of the movement of the front SL top plate to the top plate starts moving,
The reaction time from the instruction to end the movement of the top plate to the end of the movement of the top plate, and
Calculate at least one of them,
The radiotherapy apparatus according to claim 10. It said calculation means,
As before Symbol reaction time, the reaction time from the start indication of sliding movement of the top plate to the top plate starts to slide movement, or the top plate from the start indication of the rotational movement of the top plate starts rotating movement Calculate the reaction time until
As the reaction time , the reaction time from the end instruction of the slide movement of the top plate to the end of the slide movement of the top plate, or the end instruction of the rotational movement of the top plate causes the top plate to end the rotational movement. Calculate the reaction time up to,
The radiotherapy apparatus according to claim 11. It said calculation means,
And the reaction time from power-on of the previous SL radiotherapy apparatus until the system startup is completed,
The reaction time from the instruction to shut down the radiotherapy device to the termination of the system,
The reaction time from the instruction to start the irradiation of the treatment line to the start of the irradiation of the treatment line,
The reaction time from the instruction to end the irradiation of the treatment line to the end of the irradiation of the treatment line,
The system information, which is at least one of them, is calculated as the movement information .
The radiotherapy apparatus according to any one of claims 1 to 12. In addition to the movement information, the calculation means acquires environmental information which is at least one of the humidity, temperature, and atmospheric pressure of the room in which the radiotherapy device is arranged.
The judgment unit may, based on the measured changes and the environmental information of the mobile information registered in the time series, to determine the replacement timing for replacement article of the movable body,
The radiotherapy apparatus according to any one of claims 1 to 13.

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