WO2018069991A1

WO2018069991A1 - Radiation irradiating apparatus and radiation irradiating method

Info

Publication number: WO2018069991A1
Application number: PCT/JP2016/080224
Authority: WO
Inventors: 仁川▲崎▼; 朋興浮穴; 冬樹佐藤; 裕希川野
Original assignee: 三菱電機株式会社
Priority date: 2016-10-12
Filing date: 2016-10-12
Publication date: 2018-04-19

Abstract

Provided are a radiation irradiating apparatus and a radiation irradiating method capable of switching whether or not radiation irradiation can be performed in a manner suitable for the state of a room to be irradiated with radiation. From a captured image of the room to be irradiated with radiation, room-occupation information that shows whether or not people are present in the room is generated and a signal instructing irradiation of radiation is acquired, after which, it is determined whether or not to prohibit irradiation of radiation on the basis of the room-occupation information.

Description

Radiation irradiation apparatus and radiation irradiation method

The present invention relates to a radiation irradiation apparatus and a radiation irradiation method for irradiating an object with radiation such as electromagnetic waves and particle beams.

Conventionally, there is a radiation irradiation apparatus that irradiates a target with an ion beam as radiation (see, for example, Patent Document 1). This conventional radiation irradiation apparatus accelerates ions generated by an ion source with an accelerator and irradiates the accelerated ions to a target. In this radiation irradiation apparatus, an operation state in which the ion beam is accelerated and a standby state in which the ion beam is not accelerated are switched depending on whether or not the ion beam is required. The switching between the operation state and the standby state is performed based on a signal output from the entrance / exit management device of the use room in which the radiation irradiation device is installed, and in the standby state when a person is in the use room By doing so, the ion beam is not irradiated.

JP 2001-326098 A

In the radiation irradiation apparatus using the entrance / exit management apparatus as described above, if the entrance / exit management apparatus cannot reliably determine whether the occupant is entering or leaving the room, switching between an appropriate operation state and a standby state, that is, radiation Cannot switch irradiation. For example, if an entry person enters the room after entering the room authentication and leaves the entrance / exit, the person who leaves the room without going through the room authentication will enter the room. In cases such as when a person is accompanied, the entrance / exit management device cannot accurately determine the entrance / exit of the person entering the room, and thus switching of whether or not appropriate radiation can be performed is not performed.
The present invention has been made in order to solve the above-described problems, and provides a radiation irradiation apparatus and a radiation irradiation method capable of switching whether or not radiation irradiation suitable for the state of a room irradiated with radiation can be switched. Objective.

The radiation irradiation apparatus according to the present invention includes an occupancy information determination unit that generates occupancy information indicating whether or not a person is present in a room from a captured image of the room irradiated with radiation, and a signal instructing radiation irradiation. And a determination unit that determines whether or not radiation irradiation is prohibited based on the occupancy information.

Further, the radiation irradiation method according to the present invention includes a step of generating occupancy information indicating whether or not a person is present in the room from a captured image of the room irradiated with radiation, and after starting preparation for radiation irradiation. And determining whether or not radiation irradiation is prohibited based on the occupancy information.

According to the present invention, occupancy information indicating whether or not a person is present is generated from a captured image of a room irradiated with radiation, and after preparation for irradiation is started, radiation is generated based on the occupancy information. Therefore, it is possible to determine whether the room in which the radiation is irradiated is in a state suitable for the radiation irradiation, and to switch whether the radiation irradiation is suitable for the state of the room.

It is the schematic of the radiation irradiation apparatus which concerns on Embodiment 1 of this invention, and the irradiation chamber in which the said apparatus was installed. It is a block diagram which shows the apparatus structure of the radiation irradiation apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the relationship between the utilization condition information acquired and preserve | saved by the utilization condition acquisition part which concerns on Embodiment 1 of this invention, and its identification number. It is explanatory drawing which shows the relationship between the availability of execution of the radiation irradiation determined in the particle beam irradiation determination part which concerns on Embodiment 1 of this invention, and utilization status information. It is a block diagram which shows the hardware constitutions of the particle beam generator which concerns on Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the radiation irradiation apparatus which concerns on Embodiment 1 of this invention. It is a block diagram showing the radiation irradiation apparatus which concerns on Embodiment 2 of this invention, and a peripheral device. It is explanatory drawing which shows the relationship between the state of the occupant who the occupancy information determination part which concerns on Embodiment 3 of this invention determines, and its identification number. It is a flowchart which shows operation | movement of the radiation irradiation apparatus which concerns on Embodiment 3 of this invention. It is a block diagram showing the radiation irradiation apparatus which concerns on Embodiment 4 of this invention, and its peripheral device. It is a block diagram showing the radiation irradiation apparatus which concerns on Embodiment 5 of this invention, and its peripheral device.

In the present invention, it is determined whether or not a person is present in a room from an image of a room irradiated with radiation, and whether radiation irradiation is enabled or not is switched based on the determination.
Embodiments of a radiation irradiation apparatus and a radiation irradiation method according to the present invention will be described with reference to the drawings.

Embodiment 1

FIG. 1 shows a schematic diagram of a radiation irradiation apparatus 1 according to Embodiment 1 of the present invention and an irradiation chamber 6 that is a room where radiation irradiation is performed by the radiation irradiation apparatus 1. A part of the radiation irradiation apparatus 1 is installed in the irradiation chamber 6. The radiation irradiating apparatus 1 is connected to a camera 2 that obtains a photographed image by photographing the inside of a room through a network 3 and can transmit and receive data such as a photographed image. In the irradiation chamber 6 where the radiation irradiation by the radiation irradiation apparatus 1 is performed, a bed 4 for positioning the patient when performing the radiation irradiation and a door 5 serving as an entrance for entering and exiting the irradiation chamber 6 are provided. .

The radiation irradiation apparatus 1 obtains a therapeutic effect on a lesion by irradiating a patient's lesion such as a cancer lesion with radiation such as a particle beam.
The radiation irradiation apparatus 1 generates a particle beam and irradiates a patient on the bed 4 with a particle beam. Examples of particle beams include proton beams and carbon beams.

The camera 2 is installed on the ceiling in the irradiation chamber 6 and takes an image of the entire irradiation chamber 6. The camera 2 corresponds to a photographic device according to the present invention.
The image taken by the camera 2 is a moving image, but may be a still image taken periodically, for example.
Although the camera 2 uses a video camera or the like, a thermal camera or the like may be used as long as it can capture indoor images.

The network 3 transmits the image captured by the camera 2 to the radiation irradiation apparatus 1. The network 3 uses a general IP network connected by Ethernet, but may be any network having a performance of transmitting images.

The bed 4 places the patient and positions the patient when irradiating with radiation. The bed 4 is located in the radiation irradiation direction. The bed 4 may be dedicated to the radiation irradiation apparatus 1 or may be substituted by positioning it on the floor of the irradiation room using a movable medical bed.

The door 5 is opened and closed when a patient or the like enters or exits the irradiation chamber 6. The door 5 is made of a material that can block radiation at a certain rate. In addition, FIG. 1 shows an example of a door. However, in addition to a door for entering and exiting a patient, there may be a door for an operator of the radiation irradiating apparatus 1 and medical personnel to enter and exit. Multiple may be installed.

The irradiation room 6 is a room in which at least a part of the radiation irradiation apparatus 1 is installed and radiation irradiation is performed. It consists of walls, floors, etc. made of materials that can block radiation at a certain rate.

Next, the configuration of the radiation irradiation apparatus 1 will be described in detail. FIG. 2 is a block diagram illustrating a device configuration of the radiation irradiation device 1 according to the first embodiment.

The radiation irradiation apparatus 1 includes an indoor image acquisition unit 11, a usage status acquisition unit 12, a camera control / image mask processing unit 13, an occupancy information determination unit 14, an irradiation signal acquisition unit 15, a particle beam irradiation determination unit 16, and a particle beam irradiation. A control unit 17 and a particle beam irradiation unit 18 are provided.

The indoor image acquisition unit 11 acquires an image of the irradiation room 6 taken by the camera 2 via the network 3.
At any time, the camera 2 captures an image, and the image is stored in a storage unit such as a memory built in the camera 2. Acquisition of an image by the indoor image acquisition unit 11 is performed on a stored image periodically or in synchronization with an operation on the radiation irradiation apparatus 1.

The usage status acquisition unit 12 acquires usage status information of the radiation irradiation apparatus 1 and the irradiation chamber 6. The usage status acquisition unit 12 corresponds to a usage status acquisition unit according to the present invention. The usage status information acquired by the usage status acquisition unit 12 is input to the radiation irradiation device 1 by an operator of the radiation irradiation device 1 or a medical staff. Note that the usage status information may be estimated by using a room image taken by a camera, entrance / exit information, and the like, and the usage status acquisition unit 12 may acquire the usage status information from the estimation means.

An example of usage status information acquired and stored by the usage status acquisition unit 12 and information for identifying the usage status information will be described with reference to FIG.
The usage status acquisition unit 12 stores an identification number associated with the usage status information.
When maintenance inspection of the radiation irradiation apparatus 1 or the irradiation chamber 6 is performed, information indicating the time of inspection is acquired, and number = 1 is stored as usage status information.
When the patient is changing clothes before and after radiation irradiation in the irradiation room 6, information indicating when the patient is changing is acquired, and the number = 2 is stored as usage status information.
When the irradiation preparation of the radiation irradiation apparatus 1 is completed and the movement of the patient to the bed 4 is completed, information indicating that the preparation for irradiation of the particle beam has been completed is acquired, and number = 3 is stored as the usage status information.
When it is determined by the occupancy information determination unit 14 that will be described later that a person other than the patient is not in the irradiation chamber after the preparation for the particle beam irradiation is completed, information indicating that it is immediately before the particle beam irradiation is acquired and used as usage status information , Number = 4 is stored.

The camera control / image mask processing unit 13 controls the shooting pattern of the camera based on the usage status information stored in the usage status acquisition unit 12. The imaging pattern is a plurality of patterns in which the range of the irradiation chamber 6 included in the captured image acquired by the camera 2 is changed. For example, the entire irradiation chamber is imaged, the entire irradiation chamber is not imaged, and other than the bed area It's like taking a picture, taking a picture of the bed area. The camera control / image mask processing unit 13 selects a shooting pattern of such a camera based on the usage status information. The camera control / image mask processing unit 13 corresponds to a captured image change unit according to the present invention.
The camera control / image mask processing unit 13 performs the mask process on the indoor image data acquired by the indoor image acquisition unit 11 to realize the above-described shooting pattern. Specifically, in order to realize a pattern in which the entire irradiation room is not photographed, mask processing is performed on the entire indoor image data. In order to realize a pattern for photographing other than the bed area, a mask process is performed on the bed area of the indoor image. In order to realize a pattern for photographing the bed area, mask processing is performed on areas other than the bed area of the indoor image.
Here, the bed area refers to the outline of the bed 4 reflected in the image and the area inside the bed 4.

The correspondence relationship between usage status information and camera shooting pattern control will be described.
When the usage status information is information indicating the time of inspection (number = 1), a pattern for imaging the entire irradiation chamber is selected. If the usage status information is information (number = 2) indicating when the patient changes clothes, a pattern that does not capture the entire irradiation chamber is selected. In the case where the usage status information is information indicating that preparation for irradiation of particle beams has been completed, that is, information indicating that irradiation preparation has been completed (number = 3), a pattern for imaging other than the bed area is selected. When the usage status information is information (number = 4) indicating that it is immediately before the particle beam irradiation, a pattern for photographing the bed area is selected.

By selecting the shooting pattern corresponding to the usage status information as described above, the following effects can be obtained.
In a situation where the patient is changing clothes, a pattern that does not capture the entire irradiation chamber is selected, so that an image at the time of changing clothes is not acquired and stored. This makes it possible to consider patient privacy.

The occupancy information determination unit 14 acquires an image of the imaging pattern obtained by the camera control / image mask processing unit 13 and the occupancy state of the patient and a person other than the patient (inspector, operator, etc.) in the irradiation chamber. The presence-in-room information indicating whether or not there is a person in the irradiation room 6 is generated. Further, the occupancy information determination unit 14 determines whether or not the patient has movement, and generates information on the movement of the occupant. The occupancy information determination unit 14 corresponds to the occupancy information determination unit according to the present invention.
In addition, although a known method can be used for determination of an occupancy state, for example, it is possible to use a difference between a captured image and an indoor image when absent.

The occupancy state determination method of the occupancy information determination unit 14 will be described.

When the usage status information stored by the usage status acquisition unit 12 is information indicating the time of inspection (number = 1), there is a possibility that an operator or a medical staff who performs maintenance inspection is in the room. Then, the camera control / image mask processing unit 13 selects a pattern for imaging the entire irradiation chamber as a camera imaging pattern. Here, when a person is reflected in the photographed image, the occupancy information determination unit 14 determines that the person is occupying the room.
At the time of maintenance inspection, maintenance inspections of various facilities inside the room, such as the radiation irradiation device 1 and the bed 4, are performed. As described above, the occupancy state is determined by using the pattern for imaging the entire irradiation room. By doing so, the presence or absence of the room can be determined regardless of the work position of the worker or the like.

When the usage status information stored by the usage status acquisition unit 12 is information (number = 2) indicating the change of patient, there is a possibility that the patient is in the room. Then, the camera control / image mask processing unit 13 selects a pattern that does not shoot the entire irradiation chamber as the photographic pattern of the camera. Here, since the indoor image is not acquired, the occupancy information determination unit 14 does not determine the occupancy state.

When the usage status information stored by the usage status acquisition unit 12 is information (number = 3) indicating that the preparation for particle beam irradiation has been completed, the patient's dressing is complete and the patient may be on the bed 4 Is expensive. Then, the camera control / image mask processing unit 13 selects a pattern for imaging other than the bed area as the imaging pattern of the camera. Here, if a person is shown in the irradiation room other than the bed area, it is determined that the person is in the room. Furthermore, since the patient is on the bed 4 and the bed area is not photographed, it is determined that a person other than the patient is present if a person is shown in the image photographed by the pattern for photographing the area other than the bed area. it can. As described above, when the above-described shooting pattern is taken in the use status information, the occupancy information determination unit 14 indicates that a person other than the patient is present when a person is detected on the image. May be determined.
When the irradiation preparation is completed, it is assumed that the patient is in the room and is on the bed 4, and the bed area is not imaged. Since shooting is performed excluding the bed area and occupancy determination is performed, the target area is smaller than when shooting and determining the entire irradiation room, and it is possible to perform shooting and determination efficiently. .
In addition, in order to distinguish between a patient and a person other than the patient, information processing for identifying the type of person, identification by a person, entry / exit information, and the like are required. However, assuming that the patient is on the bed 4 as described above and not photographing the patient, it is not necessary to determine the type of such a person. Therefore, it is possible to perform occupancy determination by simpler processing.
Note that, as described above, it is assumed that the patient is on the bed 4, but the patient may be outside the bed area. Even in such a case, it is determined that a person is present in the room or is recognized as a person other than the patient, and a person other than the patient is present in the room. Then, as will be described later, if it is determined that a person is present in the room, radiation irradiation is prohibited. Here, if the patient is not on the bed 4, irradiation should not be performed because the patient is not in an appropriate position to receive treatment. Therefore, as a result, radiation irradiation is prohibited, so that even when the above assumptions are broken, it is possible to prevent the patient from receiving radiation inappropriately.

When the usage status information stored by the usage status acquisition unit 12 is information (number = 4) indicating that it is immediately before the irradiation of the particle beam (information = number = 3) ) It is determined that no one other than the patient is present in the room. In addition, the patient must be on the bed 4 immediately before irradiation. Then, the camera control / image mask processing unit 13 selects a pattern for shooting the bed area as the shooting pattern of the camera. If there is a patient in the bed area, it is determined that a person or specifically the patient is in the room. Here, when the patient is not on the bed 4, the patient is not in the room or is in an area other than the bed 4, but in any situation, the patient is not in an appropriate position and is treated. Since it cannot be started, it is determined that the patient is not in the room. As described above, when the above-described shooting pattern is taken in the above-described usage status information, the occupancy information determination unit 14 determines that the patient is present when a person is detected on the image. .
Further, the occupancy information determination unit 14 determines whether or not the patient being imaged has movement, and generates information on the movement of the occupant.
Immediately before the irradiation, only the bed area is imaged, so that the target area is narrow compared to the case where the entire irradiation room is imaged and determined, and the image can be efficiently imaged and determined. In addition, by setting the imaging area narrow, it is possible to zoom up to the bed area when determining the movement of the patient, and to detect a finer movement of the patient.

The irradiation signal acquisition part 15 acquires the signal which instruct | indicates the irradiation, when an operator requests | requires irradiation of a particle beam with respect to the radiation irradiation apparatus 1 via user interfaces, such as a touch panel.

The particle beam irradiation determination unit 16 acquires a signal instructing irradiation from the irradiation signal acquisition unit 15, and then determines whether or not irradiation can be performed based on the occupancy information generated by the occupancy information determination unit 14. When the execution of irradiation is allowed, the irradiation signal is output, and when it is prohibited, the irradiation signal is not output. The particle beam irradiation determination unit 16 corresponds to a determination unit according to the present invention.

Determination of whether or not the particle beam irradiation determination unit 16 can execute irradiation will be described with reference to FIG.

When the usage status information stored by the usage status acquisition unit 12 is information (number = 1) indicating the time of inspection, and when it is determined by the occupancy information determination unit 14 that there is a person in the room, the particle beam The irradiation determination unit 16 prohibits irradiation. When it is determined that there is no person in the room, the particle beam irradiation determination unit 16 allows irradiation.
By determining in this way, radiation irradiation is prohibited while the maintenance / inspection worker is in the room, and irradiation for inspection is permitted when the worker is absent.

If the usage status information stored by the usage status acquisition unit 12 is information (number = 2) indicating when the patient changes clothes, the particle beam irradiation determination unit 16 prohibits irradiation.

This is a case where the usage status information stored by the usage status acquisition unit 12 is information (number = 3) indicating that the preparation for irradiation of particle beams has been completed, and the presence-in-room information determination unit 14 determines that there is a person in the room. If there is, the particle beam irradiation determination unit 16 prohibits irradiation. Even when it is determined that there is no person in the room, since the patient has not yet been confirmed, the particle beam irradiation determination unit 16 prohibits irradiation.

This is a case where the usage status information stored by the usage status acquisition unit 12 is information (number = 4) indicating that it is immediately before the irradiation of the particle beam, and it is determined by the occupancy information determination unit 14 that there is a person in the room. If so, the particle beam irradiation determination unit 16 allows irradiation. When it is determined that there is no person in the room, the particle beam irradiation determination unit 16 prohibits irradiation.
As described above, if it is determined that there is no person in the room, at least the patient is not on the bed 4, so the patient is absent or is not in a position to receive appropriate treatment. Therefore, radiation irradiation is prohibited.
Further, when it is determined by the occupancy information determination unit 14 whether or not the patient being photographed has movement, the particle beam is used when the patient has movement based on the movement information of the occupant. The irradiation determination unit 16 may prohibit irradiation. Thereby, it can prevent that an irradiation position shifts and an appropriate therapeutic effect is not acquired.

Upon receiving the determination result from the particle beam irradiation determination unit 16, the particle beam irradiation control unit 17 determines whether to irradiate the irradiation room with the particle beam, and if irradiation is allowed, the particle beam irradiation unit 18 The irradiation signal is output. When irradiation is prohibited, no irradiation signal is output. The particle beam irradiation control unit 17 corresponds to the irradiation control unit according to the present invention.

Upon receiving the irradiation signal from the particle beam irradiation control unit 17, the particle beam irradiation unit 18 irradiates the irradiation chamber with a particle beam as radiation. The particle beam irradiation unit 18 corresponds to the irradiation unit according to the present invention.

Indoor image acquisition unit 11, usage status acquisition unit 12, camera control / image mask processing unit 13, occupancy information determination unit 14, irradiation signal acquisition unit 15, particle beam irradiation determination unit 16, which are components of radiation irradiation apparatus 1, The particle beam irradiation control unit 17 stores the program describing the contents of each process in the memory 102 of the computer, and the computer processor 101 executes these programs stored in the memory. (See FIG. 5). In addition, a communication interface 103 and a display / operation interface 104 are provided. Output information from the camera 2 and the like is stored in the memory via the communication interface, and operations to the radiation irradiation apparatus 1 are input via the display / operation interface. Is done.
In addition, each of the above components may be configured by dedicated hardware (for example, a semiconductor integrated circuit on which a CPU is mounted, a one-chip microcomputer, or the like).

Next, the operation of the radiation irradiation apparatus 1 will be described with reference to FIG.

First, the irradiation signal acquisition unit 15 acquires a signal related to the request for irradiation of the particle beam as a signal for instructing irradiation of the particle beam from the operator (step ST101). Thereby, preparation for radiation irradiation is started. Step ST101 includes preparing for radiation irradiation.

Next, the camera control / image mask processing unit 13 acquires the room image captured by the camera 2 via the indoor image acquisition unit 11 (step ST102).

The camera control / image mask processing unit 13 acquires the usage status information stored by the usage status acquisition unit 12 (step ST103). As described above, the usage status information is classified into four types at the time of inspection, change of clothes, completion of irradiation preparation, and immediately before irradiation. Based on this information, the camera control / image mask processing unit 13 determines a photographing pattern. (Step ST104).

When the usage status information is at the time of inspection, the camera control / image mask processing unit 13 selects a pattern for imaging the entire indoor area as an imaging pattern (step ST105).
If the usage status information is when changing clothes, the camera control / image mask processing unit 13 selects a pattern that does not capture the entire indoor area as the imaging pattern (step ST106).
If the usage status information is when irradiation preparation is completed, the camera control / image mask processing unit 13 selects a pattern for imaging other than the bed area as the imaging pattern (step ST107).
When the usage status information is immediately before irradiation, the camera control / image mask processing unit 13 selects a pattern for imaging the bed area as the imaging pattern (step ST108).

The occupancy information determination unit 14 performs occupancy determination of a person using the image of the room masked based on the selected shooting pattern (step ST109). That is, the occupancy information determination unit 14 generates occupancy information indicating whether or not there is a person in the room from the masked room image.

The particle beam irradiation determination unit 16 determines whether radiation irradiation can be executed based on the determination result of the occupancy information determination unit 14 (step ST110). When the particle beam irradiation determination unit 16 permits radiation irradiation, the particle beam irradiation control unit 17 outputs a signal so that the particle beam irradiation unit 18 performs irradiation, and the particle beam irradiation unit 18 performs radiation irradiation. Execute (step ST111). When the particle beam irradiation determination unit 16 prohibits radiation irradiation, the particle beam irradiation control unit 17 outputs a signal so that the particle beam irradiation unit 18 does not perform irradiation.

By configuring as described above, the radiation irradiating apparatus 1 according to the present embodiment uses the images taken according to the usage status information of the apparatus and the irradiation room, so that the patient's occupancy information and the person other than the patient It is possible to determine the occupancy information of the occupant and perform radiation irradiation according to the occupancy status, and it is possible to control whether radiation is appropriately applied without using an entrance / exit management device.

Embodiment 2

Embodiment 2 of the present invention will be described with reference to the drawings. The configuration and operation of the first embodiment are the same except for a part. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof will be omitted, and parts different from those in the first embodiment will be described below.

FIG. 7 is a block diagram showing the radiation irradiation apparatus 21 and peripheral devices according to the second embodiment of the present invention. The radiation irradiation apparatus 21 can communicate with the camera 2 via a network.
The second embodiment is different from the first embodiment in that a cover control device 22, a drive unit 23, and a cover 24 are added as peripheral devices. The radiation irradiation apparatus 21 includes the cover control unit 25 connected to the cover control apparatus 22 via a network and outputs a signal for controlling the movement of the cover. The other differences are the same as in the first embodiment.
Further, the cover control unit 25 of the radiation irradiating device 21 is communicably connected to the cover control device 22 via a network, and the cover control device 22 is further connected to a drive unit 23 that drives the cover 24.

The cover control device 22 receives a signal for controlling the cover from the radiation irradiation device 21 and controls the drive unit 23 for driving the cover 24.

The driving unit 23 is configured by a motor, and drives the cover in accordance with a control signal from the cover control device 22. The drive source may be any of electric type, magnetic type and hydraulic type.

The cover 24 is made of a plate or cloth that covers at least a part of the camera 2, and covers the camera 2 to limit the shooting range. For example, a transparent acrylic plate with an opaque plate attached to the masking position can be used. A plurality of fixed-size covers can be prepared to change the restricted shooting range.

In the radiation irradiation apparatus 21 of the second embodiment, the same operation as that of the radiation irradiation apparatus 1 of the first embodiment is performed. However, in the first embodiment, the camera control / image mask processing unit 13 performs mask processing on the captured image so as to obtain an image of a desired shooting pattern. The camera control / image mask processing unit 13 moves the cover that covers the camera to obtain an image of a desired shooting pattern.
That is, the camera control / image mask processing unit 13 selects the shooting pattern of the camera 2 based on the usage status information obtained from the usage status acquisition unit 12. As in the first embodiment, the photographing pattern includes a pattern for photographing the entire irradiation room, a pattern for not photographing the whole irradiation room, a pattern for photographing other than the bed area, and a pattern for photographing the bed area.
The cover control unit 25 determines a range in which the camera 2 is covered with the cover 24 in accordance with the photographing pattern selected by the camera control / image mask processing unit 13. Further, the cover control unit 25 outputs to the cover control device 22 so as to move the cover 24 between the position where the camera 2 is covered and the retracted position in accordance with the determined range to be covered.
In response to the output, the cover control device 22 controls the drive unit 23 so that the cover 24 moves to a desired position.

By configuring as described above, the radiation irradiation apparatus 21 according to the present embodiment can visually recognize that the camera 2 in the irradiation chamber is covered with the cover. This makes it possible for the patient to recognize that a pattern that does not capture the entire irradiation room is selected and executed when the patient changes clothes, and to give a sense of security by telling the patient that privacy is being protected. .

Embodiment 3

Next, Embodiment 3 of the present invention will be described. The configuration and operation of the first and second embodiments are the same except for a part. A description of the same parts as in the first and second embodiments will be omitted, and different points will be described.

The configuration of the radiation irradiation apparatus according to the third embodiment of the present invention is the same as that of the

radiation irradiation apparatuses

1 and 21 according to the first and second embodiments shown in FIGS. The room information determination unit and the particle beam irradiation determination unit have different points.
First, a thermo camera is used as the camera according to Embodiment 3 of the present invention.

The occupancy information determination unit according to the third embodiment of the present invention determines the presence / absence of an occupancy based on an indoor image, as in the first and second embodiments. In addition to the presence or absence, a state quantity indicating the state of the occupant is acquired from the image. The state of the occupant is information that can recognize the state of the occupant that can be acquired from the image of the thermo camera, such as information on the presence or absence of the occupant and the body temperature.

Further, the particle beam irradiation determination unit according to the third embodiment of the present invention prohibits the irradiation of the particle beam based on the occupancy information determined by the occupancy information determination unit, as in the first and second embodiments. However, the irradiation of the particle beam is prohibited based on whether or not the state quantity indicating the state of the occupant determined by the occupancy information determination unit is out of the reference value range.

An example of the occupant status determined by the occupancy information determination unit 14 will be described with reference to FIG. In addition, it will be described whether or not the particle beam irradiation determination unit prohibits the particle beam irradiation.
The occupancy information determination unit 14 stores an identification number associated with the state of the occupant.
Information about the presence or absence of the occupants and body temperature is obtained from the image of the thermo camera.
When the occupant is at rest and there is no abnormality in body temperature, the number = 11 is stored, and irradiation with particle beams is not prohibited.
When the occupant is moving, the number = 12 is stored and particle beam irradiation is prohibited. This is because there is a possibility that the particle beam is not irradiated to an appropriate position and a therapeutic effect cannot be obtained. In addition, the patient who is in the room may move while complaining of some kind of disorder, so that irradiation is prohibited and treatment is stopped. A state quantity relating to the movement of the occupant is used to determine whether the occupant is moving. The state of the occupant is determined based on whether or not the amount related to movement exceeds the reference value. That is, when the amount related to movement exceeds the reference value, it is determined that the occupant is moving.
In the case where the temperature of the occupant is higher than the reference value, the number = 13 is stored, and particle beam irradiation is prohibited. This is because if the body temperature is higher than the reference value, the physical condition may not be suitable for radiotherapy. The state quantity related to the temperature of the occupant is used for the determination of the state related to the temperature of the occupant.
When the occupant's body temperature is lower than another reference value or lower, the number = 14 is stored and particle beam irradiation is prohibited. This is because the physical condition may not be suitable for radiotherapy as in the case where the body temperature is high.

Next, the operation of the radiation irradiation apparatus according to the third embodiment of the present invention will be described with reference to the configuration diagram of FIG. 2 as an example of the configuration and the flowchart of FIG. 9 as the operation.
Of the operations of the radiation irradiation apparatus according to the third embodiment of the present invention, steps ST301 to ST309 are the same as steps ST101 to ST109 described in the first embodiment, and a description thereof will be omitted.

After determining a person's occupancy based on a room image obtained by a predetermined shooting pattern (step ST309), the occupancy information determination unit 14 determines the state of the occupant (step ST310). The state is classified as described above, and the corresponding number is stored by the occupancy information determination unit 14.

The particle beam irradiation determination unit 16 uses the above-described relationship between the occupant status and whether or not irradiation is performed in addition to the relationship between presence information and whether or not irradiation is performed as described in the first embodiment (FIG. 4). Then, it is determined whether the irradiation of the particle beam is allowed or prohibited (step ST311).
More specifically, irradiation with particle beams is permitted only when irradiation is permitted based on the presence-in-room information and irradiation is permitted based on the state of the occupants. In other cases, particle beam irradiation is prohibited.
When it is determined that the person is not in the room (step ST309), the occupancy information determination unit 14 does not determine the state of the occupant, and the occupancy information and irradiation described in the first embodiment (FIG. 4). It is determined whether the irradiation of the particle beam is permitted or prohibited using the relationship between presence / absence of execution (step ST311).

When the particle beam irradiation control unit permits the irradiation of the particle beam, the particle beam irradiation unit 18 emits radiation (step ST312). When irradiation is prohibited, the particle beam irradiation unit 18 does not irradiate radiation.

By configuring as described above, the radiation irradiation apparatus according to the present embodiment can perform radiation irradiation in consideration of not only the occupancy information of the patient and the person other than the patient, but also the state of the occupant. It becomes possible. Thereby, it is possible to appropriately perform treatment and examination according to the health condition of the occupants.

Embodiment 4

Embodiment 4 of the present invention will be described with reference to FIG. The fourth embodiment of the present invention is the same as the third embodiment except for the configuration and operation. A description of the same parts as those in the third embodiment will be omitted, and different points will be described. Also, in the configuration in FIG. 10, the same reference numerals are used for the same configurations as in the other embodiments.

FIG. 10 is a block diagram showing the configuration of the radiation irradiation apparatus 41 and its peripheral devices according to the fourth embodiment of the present invention. Compared with the radiation irradiation apparatus according to the third embodiment, the radiation irradiation apparatus 41 according to the fourth embodiment of the present invention is different in a part of the configuration, and the peripheral device is also related to the camera 2 and the added sensor 42. About different.

The camera 2 according to the fourth embodiment of the present invention uses a video camera.

In the fourth embodiment of the present invention, a sensor 42 is added, and the radiation irradiation apparatus 41 and the sensor 42 are connected by a network.

The sensor 42 is installed in the irradiation chamber, detects a state quantity indicating the state of the occupant, and outputs it to the radiation irradiation apparatus 41 via the network. Since the camera 2 is provided separately, information other than visual information may be acquired. For example, information such as sound, human movement, temperature, and humidity. Examples of the sensor include a voice sensor, a vibration sensor, a temperature sensor, and a humidity sensor.

As shown in FIG. 10, a sensor information acquisition unit 43 is added to the radiation irradiation apparatus 41 according to the fourth embodiment of the present invention, and the determination process of the occupancy information determination unit 44 is different from the third embodiment. Yes. Other configurations are the same as those in the third embodiment.

The sensor information acquisition unit 43 acquires the output from the sensor 42 via the network.

The occupancy information determination unit 45 obtains information related to the state quantity from the sensor 42 and performs determination when determining the state of the occupant. Specifically, the occupancy information determination unit 44 determines that the occupant is not resting (ie, other than number = 11) when the state quantity is out of the predetermined reference value range. For example, if the occupant is loud and the volume acquired by the sensor exceeds the range of the reference value, it is determined that the occupant is moving (ie, number = 12). In this case, the particle beam irradiation determination unit 16 prohibits the irradiation so as not to irradiate the particle beam regardless of the presence information.
In addition, when the occupant is moving and the amount of vibration caused by the movement acquired by the vibration sensor exceeds the reference value, it is determined that the occupant is moving (that is, number = 12). In this case as well, irradiation is prohibited as described above.
Furthermore, when the temperature of the occupant is acquired by a temperature sensor and the body temperature is above or below the reference value, it is determined that the body temperature is higher or lower (number = 13 or 14) than the reference value. To do. In this case as well, irradiation is prohibited as described above.
The occupancy information determination unit 14 may determine the state of the occupant by combining the output of the camera (for example, a thermo camera) and the output of the sensor. For example, when it can be determined that the occupant is not resting with either one of the outputs (that is, other than number = 11), it may be determined that the occupant is not resting regardless of the other output.

By configuring as described above, the radiation irradiation apparatus according to the present embodiment can determine the state of the occupant using information from sensors other than the camera. Thereby, it is possible to determine whether there are any abnormalities in the occupants in more detail than when only the camera is used.

Embodiment 5

Embodiment 5 of the present invention will be described with reference to FIG. The configuration and operation of the third embodiment are the same except for a part. A description of the same parts as those in the third embodiment will be omitted, and different points will be described. Moreover, the same code | symbol is used for the same structure as other embodiment among the structures in FIG.

FIG. 11 is a block diagram showing the radiation irradiation apparatus 51 and its peripheral devices according to the fifth embodiment of the present invention. Compared with the radiation irradiating apparatus of the third embodiment, the radiation irradiating apparatus 51 of the fifth embodiment of the present invention is different in a part of the configuration and a part related to the entrance / exit management apparatus 52 as a peripheral device.

In the fifth embodiment of the present invention, an entrance / exit management device 52 is added, and the radiation irradiation device 51 and the entrance / exit management device 52 are connected via a network.

The entrance / exit management device 52 is installed in the vicinity of the door of the irradiation room, detects entry / exit of a person into the irradiation room, acquires entry information of the entry person and exit information of the exit person, and transmits it via the network. Output to the radiation irradiation device 51. For example, information such as which patient the person who entered the room (that is, the person in the room) is, and which medical staff is included is acquired. The entry information and the exit information are collectively referred to as entering person information. The entrance / exit management device 52 corresponds to an entrance / exit management unit according to the present invention.

As shown in FIG. 11, an entrance / exit information acquisition unit 53 is added to the radiation irradiation apparatus 51 according to the fifth embodiment of the present invention as compared with the radiation irradiation apparatus according to the third embodiment, and the presence / absence information determination unit The determination process 54 is different from the third embodiment.

The entrance / exit information acquisition unit 53 acquires an output from the entrance / exit management device 52 via the network.

When it is determined that there are occupants, the occupancy information determination unit 54 identifies the occupants based on the occupant information from the entry / exit management device 52. Then, the determination criterion of the occupant state is changed according to the characteristics of the identified occupant. That is, the reference value regarding the occupant's state is changed. For example, when the occupant is a woman, the reference value of the body temperature is lowered, and in the case of a child, the reference value of the body temperature is raised to determine the state.

By configuring as described above, the radiation irradiation apparatus according to the present embodiment can identify the occupants by the entrance / exit management apparatus, and can determine the state according to the characteristics of the occupants. As a result, it becomes easier to detect abnormalities in the occupants more accurately.

In the first to fifth embodiments, the radiation irradiation apparatus and the radiation irradiation method are described as treating a cancer lesion of a patient. However, the radiation irradiation apparatus and the radiation irradiation method may treat a disease other than cancer. An inspection may be performed. For example, it is also used as an apparatus for so-called X-ray examination or CT examination for examining bones, internal organs, teeth, etc. by irradiating a patient with X-rays or the like as radiation.
Moreover, the said radiation irradiation apparatus and radiation irradiation method can be utilized not only for the treatment of a patient and the test | inspection but for the use of other radiation irradiation. For example, the apparatus and method according to the present invention can be used for food irradiation in which radiation is applied to sterilize and sterilize food. It can also be used in the same manner for sterilization and sterilization of medical instruments.

In Embodiments 1 to 5 described above, the radiation irradiating apparatus is described as irradiating a particle beam, but it may be one that generates electromagnetic radiation such as X-rays or gamma rays.

In Embodiments 1 to 5 above, the camera is installed on the ceiling in the irradiation chamber, but it may be installed on the side wall in the irradiation chamber or on the floor using a tripod. It may be installed so that the room can be photographed from outside the irradiation room.

In Embodiments 1 to 5 above, radiation irradiation is assumed to be performed in a state where the patient is sleeping, but when performed in a sitting state or an upright state, a chair or a table that can be positioned is used. There may be. For example, in the X-ray examination, a table installed at a position corresponding to the X-ray irradiation direction is used. The bed 4, chair, and table are collectively referred to as a patient table.

In the first to fifth embodiments described above, an example has been described in which the captured image is captured and temporarily stored by the camera, and the indoor image acquisition unit periodically acquires the image. The indoor image acquisition unit 11 may be configured to acquire an image at the same timing that is performed in synchronization with an operation on the device 1.

In the first to fifth embodiments, the shooting pattern is realized by an example in which mask processing is performed on the data of the camera image or an example in which a cover is installed in the shooting direction of the camera. However, the camera control / image mask processing unit The shooting pattern may be realized by shooting the area that matches the shooting pattern by controlling the zooming in / out of the camera, the shooting direction, or prohibiting the shooting operation of the camera.

In the first to fifth embodiments, the example in which the mask process is performed on the bed area and other areas as one of the imaging patterns has been described. However, the present invention is not limited to the bed area, and includes an area including the radiation irradiation position in the irradiation chamber. If it is. Therefore, when setting the mask process and controlling the photographing pattern, a part of the bed area may be used instead of the bed area, or an area larger than the bed area may be used.

In Embodiments 1 to 5, when the usage status information stored by the usage status acquisition unit 12 is information (number = 1) indicating the time of inspection, a pattern for imaging the entire irradiation room is used as the imaging pattern of the camera. In the case where a person is shown in the selected and photographed image, the occupancy information determination unit 14 has described an example in which it is determined that a person is present. More specifically, since it is a medical person, it may be determined that a worker or a medical person is present in the room.

In the first to fifth embodiments, when the usage status information stored by the usage status acquisition unit is information (number = 2) indicating when the patient changes clothes, a pattern that does not capture the entire irradiation room is used as the imaging pattern of the camera. Although the example in which the occupancy information determination unit is selected and does not determine the occupancy state has been described, the occupancy information determination unit is not likely to have taken an image, but the patient is likely to be changing clothes It may be determined that a person or patient is present in the room.

In Embodiments 1 to 5 above, four types of categories are prepared in advance as usage status information at the time of inspection, at the time of changing clothes, at the completion of irradiation preparation, and immediately before irradiation. However, it does not have to have all categories. For example, only the category at the time of inspection is prepared, and only when the information at the time of inspection is acquired as usage status information, the determination of the occupancy status and the determination of whether or not to perform irradiation are performed, otherwise Control may be performed using information from a conventional entrance / exit management device or the like. Similarly, at the time of changing the patient, only the category may be prepared independently. In addition, when the preparation for irradiation is completed, a series of things are required immediately before irradiation, and therefore these need to be prepared in a combined state. Therefore, the set immediately before the irradiation may be used alone when the irradiation preparation is completed, without using the time of inspection or changing of the patient's clothes. Further, in addition to the case of using alone, two combinations of a set at the time of inspection, change of patient's clothes, completion of irradiation preparation and immediately before irradiation may be used.

In Embodiments 1 to 5 described above, an example in which one camera 2 is provided has been described, but a plurality of cameras 2 may be installed. When installing two or more, you may arrange | position so that the blind spot of each camera can be covered. With respect to images captured by the respective cameras, the presence state determination may be performed for each image, or the presence state determination may be performed on an image obtained by combining the respective images.

In the third to fifth embodiments, the occupants are in a resting state and no abnormality is observed in the body temperature, moving, the body temperature is higher than the reference value, and the body temperature is lower than the reference value. It was classified into two. However, it is one of the three classifications that are moving, the body temperature is higher than the reference value, and the body temperature is lower than the reference value. You may comprise. Further, two of the three classifications and three classifications may be configured as long as the patient is at rest and the body temperature is not abnormal.

The radiation irradiating apparatus and the radiation irradiating method according to the present invention make it possible to safely perform radiation irradiation by determining whether radiation irradiation can be performed based on occupancy information. Therefore, the present invention can be used for a radiation irradiation apparatus and a radiation irradiation method in the medical field and non-destructive inspection field for inspecting people and objects, or in the sanitary instrument processing field and food processing field for sterilization and sterilization.

1, 21, 41, 51 Radiation irradiation device, 2 cameras, 3 networks, 4 beds, 5 doors, 6 irradiation rooms, 11 indoor image acquisition units, 12 usage status acquisition units, 13 camera control / image mask processing units, 14, 44, 54 Room presence determination unit, 15 irradiation signal acquisition unit, 16 particle beam irradiation determination unit, 17 particle beam irradiation control unit, 18 particle beam irradiation unit, 22 cover control device, 23 drive unit, 24 cover, 25 cover control Section, 42 sensors, 43 sensor information acquisition section, 52 entry / exit management device, 53 entry / exit information acquisition section

Claims

An irradiation unit for irradiating radiation;
An occupancy information determination unit that generates occupancy information indicating whether or not a person exists in the room, from a captured image of the room where the irradiation unit irradiates the radiation;
Determining whether to prohibit radiation irradiation by the irradiation unit based on the occupancy information generated by the occupancy information determination unit after acquiring a signal instructing irradiation of the radiation by the irradiation unit And
An irradiation control unit that performs control for prohibiting irradiation of the radiation to the irradiation unit, when the determination unit prohibits irradiation;
A radiation irradiation apparatus comprising:
A photographic image changing unit for changing a range of the room included in the photographic image;
The said picked-up image change part changes the range of the said room contained in the said picked-up image into the range except the area | region containing the irradiation position of the radiation which the said irradiation part radiates | emits. Radiation irradiation device.
A usage status acquisition unit that acquires usage status information of the room;
The captured image changing unit changes the range of the room based on the usage status information acquired by the usage status acquisition unit,
When the usage status information acquired by the usage status acquisition unit is usage status information indicating that irradiation preparation of the irradiation unit has been completed, the captured image change unit includes a range of the room included in the captured image To a range excluding the region including the irradiation position of the irradiation unit,
The occupancy information determination unit generates human occupancy information in a range excluding an area including an irradiation position of the irradiation unit from the changed captured image,
The radiation irradiation apparatus according to claim 2, wherein the determination unit determines whether or not radiation irradiation by the irradiation unit is prohibited based on the occupancy information.
After determining that the determination unit does not prohibit radiation irradiation by the irradiation unit based on the occupancy information,
The captured image changing unit changes the range of the room included in the captured image to a range including an irradiation position of the irradiation unit,
The occupancy information determination unit generates occupancy information of a person and movement information of the occupant in a range including the irradiation position from the changed photographed image,
The radiation irradiation apparatus according to claim 3, wherein the determination unit determines whether or not radiation irradiation by the irradiation unit is prohibited based on the occupancy information and movement information.
A usage status acquisition unit for acquiring usage status information of the room;
A captured image change unit that changes a range of the room included in the captured image based on the usage status information acquired by the usage status acquisition unit;
When the usage status information acquired by the usage status acquisition unit is usage status information indicating that it is a change of clothes, the captured image change unit captures a captured image with respect to the imaging device that acquires the captured image of the room. The radiation irradiating apparatus according to claim 1, wherein the acquisition of the radiation is prohibited.
A cover control unit for controlling a cover for covering the photographing device for acquiring the photographed image to move between a position for covering the photographing device and a retracted position;
6. The radiation irradiation apparatus according to claim 5, wherein the acquisition of the captured image of the room is prohibited by moving a cover to a position covering the imaging device.
The occupancy information determination unit obtains a state quantity indicating the state of the occupant from a captured image taken by a thermo camera as a photographic device, and determines whether the state quantity is out of a reference value range. ,
The radiation irradiation apparatus according to claim 1, wherein the determination unit prohibits irradiation of the irradiation unit when the occupancy information determination unit determines that the state quantity is out of a range of a reference value.
It further includes a sensor that detects and outputs a state quantity indicating the state of the occupant,
The occupancy information determination unit acquires the state quantity from the sensor, determines whether the state quantity is out of a reference value range,
The radiation irradiation apparatus according to claim 1, wherein the determination unit prohibits irradiation of the irradiation unit when the occupancy information determination unit determines that the state quantity is out of a range of a reference value.
The state quantity is an amount related to the movement of the occupant.
The occupancy information determination unit determines whether the amount related to the occupant's movement exceeds a reference value, and the determination unit determines whether the occupancy information determination unit uses the amount related to the occupant's movement as a reference. The radiation irradiation apparatus according to claim 7, wherein, when it is determined that the value is exceeded, irradiation of the irradiation unit is prohibited.
The state quantity is an amount related to the temperature of the occupant.
The occupancy information determination unit determines whether or not the amount related to the body temperature of the occupant deviates from a reference value,
The said determination part prohibits irradiation of the said irradiation part, when the said occupancy information determination part determines with the quantity regarding the said occupant's body temperature deviating from a reference value. The radiation irradiation apparatus as described in.
It further comprises an entrance / exit management unit installed at the entrance of the room,
The entrance / exit management unit detects entrance / exit of a person to / from the room, thereby acquiring entrance information for identifying the entrance person,
11. The radiation irradiation according to claim 7, wherein the occupancy information determination unit changes the reference value related to the state of the occupant based on the occupant information. apparatus.
Preparing to irradiate radiation; and
Obtaining a captured image of a room irradiated with the radiation;
Generating occupancy information indicating whether a person exists in the room from the captured image;
After starting preparation for radiation irradiation, determining whether to prohibit radiation irradiation by the irradiation unit based on the occupancy information;
A step of performing a control to prohibit the irradiation of the irradiation unit when the determination of prohibiting the irradiation of the radiation by the irradiation unit is performed.