JP2009066345A - Radiation treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiation treatment system which prevents a medical accident such as erroneous irradiation, over irradiation by improving reliability in acknowledgment to generated treatment plan information. <P>SOLUTION: Relative to patient information (the name of a patient) and treatment section and treatment plan information constituting information on the radiation treatment of a subject person, a content to acknowledge is previously set as "work flow information". According to the "work flow information", the treatment plan information is acknowledged. Then, the treatment is implemented by collating by means of a collation means whether the radiation irradiation condition included in the acknowledged treatment plan information is set to the radiation treatment system. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a radiation therapy system.

  Conventionally, radiation treatment is performed by dividing the radiation dose necessary for treatment of the target site into a plurality of angles and repeating irradiation over several days so that the normal tissue outside the treatment target of the subject (patient) is not destroyed. Done in

  Specifically, irradiation data (mounting angle, radiation dose, aperture, etc.) divided into a plurality of angles are stored in the treatment planning device as treatment plan information, and this treatment plan information is detected when the treatment is performed. The person selected and sent to the radiotherapy device to set the irradiation parameters. Here, for example, for a certain subject, when the total monitor unit (MU) value is determined to be 1000 MU, and this is treated as a treatment plan, 25 MU (treatment plan a) from the top and 25 MU (treatment plan b) from the bottom are performed. In such a case, a treatment period of 20 days is set by upper and lower irradiations on the 1st. This is a treatment plan.

  Moreover, as setting of this irradiation parameter, data such as treatment date and time, patient name, patient ID, treatment site ID, etc. are acquired from HIS (Hospital Information System), etc., registered in advance in the treatment planning apparatus, and the above treatment plan The treatment plan information is selected according to the above, and data transmission to the radiotherapy apparatus is performed (see Patent Document 1).

  In recent years, in order to prevent erroneous irradiation by the radiotherapy device, approval of the treatment plan information is performed before the treatment plan information is transmitted to the radiotherapy device. For example, the approval is performed when the approver selects an “approval” button 2001 on the plan information screen 2000 that is information on the treatment site as in the conventional display screen shown in FIG. On the other hand, FIG. 8 is a display screen of port information, which is information related to the conventional treatment plan. The approver visually confirms each parameter (for example, “irradiation dose”, “upper aperture”, etc.) constituting the port information shown in FIG. 8, and then each parameter (eg, the plan information shown in FIG. 9) , “Approval” button 2001 is selected and “Approval is completed”. In addition, unless this “approval completion” is made, radiation irradiation to the subject by the radiotherapy apparatus is not performed.

Japanese Patent Laid-Open No. 11-253565

  However, in the conventional approval work, it was not possible to say that appropriate and sufficient approval was made only by visually confirming each parameter constituting the treatment plan information.

  In particular, radiation therapy is often carried out over a long period of time, such as 20 days, and after several days of irradiation, the state of the target site may be confirmed and the treatment plan information may be reviewed. At this time, the examiner may create treatment plan information separately and register it in the collation recording means.

  When such a situation occurs, the treatment plan information used up to the previous time during the treatment plan for the same patient and part and the treatment plan information to be used in the future are mixed. In the state where treatment plan information is mixed in this way, for example, treatment plan information in which the irradiation dose or irradiation site is changed should be selected, but the treatment plan information before the change is selected and the radiation treatment apparatus is selected. There is a possibility of a selection error that causes transmission, and as a result, there is a possibility of causing a medical accident such as mis-irradiation or over-irradiation.

  The present invention has been made in view of the above problems, and its purpose is to improve the reliability of approval for the generated treatment plan information, and as a result, prevent medical accidents such as mis-irradiation and over-irradiation. It is to provide a radiotherapy system that can.

  Here, the features of the present invention will be briefly described. In the present invention, the contents to be approved for the patient information (patient name), the treatment site and the treatment plan information constituting the information related to the radiation treatment of the subject are defined as “workflow”. It is characterized in that it is preset as “information” and the treatment plan information is approved according to this “workflow information”. For example, the contents of the “workflow information” are “how many people need approval” and “what kind of qualification (doctor, radiologist, etc.) is appropriate for approval”.

  After the treatment plan information for the radiation treatment is created by the treatment plan device, the specific treatment plan information is selected at the approver terminal from the treatment plan information created including the past, and then the treatment plan information. Is started when the collation recording device determines whether or not the contents are reflected in the setting of the radiotherapy device, and an instruction to start treatment is given. Then, the treatment plan information is sent to the radiotherapy apparatus, and when one irradiation is completed, the next treatment plan information is automatically sent to the radiotherapy apparatus. This is repeated to complete all radiation irradiation based on the registered treatment plan information.

  In order to solve the above problems, a radiotherapy system according to claim 1 is an image generation device that obtains image data of a lesioned part of a subject, a radiotherapy device that exposes radiation to the subject, and A treatment planning apparatus that displays image data on a monitor and creates treatment plan information including a treatment site and radiation irradiation conditions, an approver terminal for approving the treatment plan information, and an approver that approves the treatment plan information. Workflow setting means for displaying workflow information including the number, the approver terminal used by each approver and the order of the approver on the display means, and receiving the input or selection from the approver to determine the workflow for approval; Receiving the fact that the workflow information is set by the storage means for recording the treatment plan information transmitted from the treatment planning apparatus and the workflow information setting means. A transmission / reception means for transmitting the treatment plan information to an approver terminal used by the identified approver based on the workflow information and receiving approval information from the approver terminal to which the treatment plan information is transmitted; The content of the approved information is determined, and based on the determination result and the workflow information, the treatment plan information is transmitted to another approver terminal, or when the approval is approved by all the approvers. Sending treatment plan information to the radiation therapy apparatus, receiving approval means for instructing the transmission / reception means to set the radiation irradiation condition, and receiving the setting result of the radiation irradiation condition transmitted from the radiation therapy apparatus, the transmission And a collation recording device comprising collation means for collating with the treatment plan information, and the setting result and the treatment meter are connected by the collation means. In response to that information matches, the radiation therapy based on the treatment plan information, wherein said radiation therapy apparatus is performed.

  In order to solve the above-mentioned problem, the radiation therapy system according to claim 2 is the radiation therapy system according to claim 1, wherein the workflow setting means includes a plurality of approvers according to the number of approvals. A selection field is displayed on the display means, and it is prohibited to select an approver selected in one selection field in another selection field.

  The radiotherapy system according to the invention described in claim 3 for solving the above-mentioned problem is that the radiotherapy system according to claim 1 can approve part or all of each parameter constituting the treatment plan information. The verification recording device is provided with an approval screen creation means for creating an approval screen with a check box to be added to the treatment plan information.

  In order to solve the above-mentioned problem, the radiation therapy system according to claim 4 is the radiation therapy system according to claim 3, wherein the approval screen creation means approves based on the set workflow information. It is characterized in that check boxes for parameters that can be approved are different for each person.

  According to the present invention, the number of approvals for the generated treatment plan information and the identification of the approver are set in advance as workflow information, and the treatment plan information is approved with reference to this, so that the trust of the approval As a result, medical accidents such as mis-irradiation and over-irradiation can be prevented.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration in an embodiment of a radiotherapy system according to the present invention.

  As shown in FIG. 1, the radiation treatment system of this embodiment includes a radiation treatment planning CT system 1 for performing consistently from image acquisition to treatment planning and alignment (simulation) during radiation treatment, and the radiation. In order to automatically control a collimator (not shown) built in the radiotherapy apparatus 2 and a radiotherapy apparatus 2 that performs radiotherapy according to the treatment plan information planned and simulated by the CT system 1 for treatment planning. The CT system 1 for radiation therapy planning and the radiation therapy apparatus 2 are connected by a transmission line 3 as a signal transmission line.

  In the middle of the transmission line 3, a collation recording device 4 is inserted, which allows the examiner to finely adjust the opening of the collimator during actual radiotherapy. Furthermore, the CT system 1 for radiation therapy planning is connected to a therapy planning device 5 responsible for specialized calculation processing such as radiation dose distribution calculation and a printer 6 for outputting therapy planning information via transmission lines 7 and 8, respectively. Has been. Similarly to the treatment planning apparatus 5, an approver terminal 9 such as a personal computer that functions as an input means for approval work is inserted in the transmission line 3. In order to increase the number of approval opportunities and increase the reliability of approval, it is desirable to install a plurality of approver terminals 9 other than the treatment planning device 5 (see FIG. 1; approver terminals 9a and 9b).

  Among these components, the radiation treatment planning CT system 1 (hereinafter simply referred to as “CT system”) will be described first.

  The CT system 1 is configured by applying a normal radiation CT scanner, and includes a gantry 11, a bed 12, and a control console 13, as shown in FIGS. It is a device to drive. A top plate 12a is disposed on the top surface of the bed 12 so as to be slidable in the longitudinal direction (X-axis (body axis) direction), and the subject P is placed on the top surface of the top plate 12a. It is done. The top plate 12a is inserted into the diagnostic opening OP of the gantry 11 so as to be able to advance and retract by driving a slide mechanism (not shown) represented by an electric motor.

  The gantry 11 incorporates a radiation tube and a radiation detector (both not shown) facing each other with the subject P inserted in the diagnostic opening OP. A weak current signal corresponding to the transmitted radiation detected by the radiation detector is converted into a digital quantity and sent to the console 13.

  In addition to the main control unit that controls the entire CT system, the console 13 includes a bed control unit and a gantry control unit that operate in response to commands from the main control unit, and are connected to each other via an internal bus. Yes. The main controller is also connected to a radiation controller outside the console, and is provided with a high voltage generator that operates in response to a drive signal from the radiation controller. A high voltage generated by the high voltage generator is supplied to the radiation tube, and radiation exposure is performed. Further, the console 13 receives an acquisition signal from the data acquisition unit, reconstructs the image data, an image memory for storing the image data, a display for displaying the reconstructed image, and the examiner Input devices for giving commands to the main control unit are provided. Each control unit and each controller is equipped with a computer and operates based on a program stored in advance in its memory.

  The verification recording device 4 is configured by, for example, a personal computer, and performs verification of treatment plan information, verification of whether the approved treatment plan information is set in the radiotherapy device 2, and the like. Details will be described later.

  Next, the radiotherapy apparatus 2 will be described.

  The radiotherapy apparatus 2 (hereinafter referred to as a treatment apparatus) treats a lesion of a subject using radiation. As shown in FIG. 1, a treatment table 20 on which the subject P is placed, and a body axis ( A base 21 that is rotatable about the X) direction as a rotation axis and a base support 22 that rotatably supports the base 21 are provided.

  The treatment table 20 includes a top plate 20a on the upper side thereof. Since the height of the treatment table 20 can be adjusted by an internal drive mechanism, the top plate 20a can be moved up and down (Z-axis direction). The treatment table 20 can move the top plate 20a in the longitudinal direction (X direction) and the lateral direction (Y direction) within a predetermined range by driving another internal drive mechanism. By operating the mechanism, it is possible to rotate the top column support and rotate around the isocenter. These operations of the treatment table 20 are necessary when positioning the subject P on the top plate 20a and performing radiation irradiation, and are controlled by a control signal from a console (not shown).

  On the other hand, the gantry 21 includes an irradiation head 21a that deflects accelerated electrons from the Kraxtron and applies them to a target, and irradiates the subject P with a radiation beam generated therefrom. The irradiation head 21a is provided with a collimator (not shown) for determining the irradiation field on the body surface of the subject P between the target, that is, the radiation source and the irradiation port.

  In this embodiment, this collimator is a multi-leaf collimator having a multi-divided base diaphragm structure. For example, two sets of leaf groups composed of a plurality of plate-like tungsten (W) leaves are arranged facing each other in a standing state across a radiation path from a radiation source, and each of the leaves has a lead screw as a main part. The moving mechanism can be independently driven in the length direction (X direction) of each leaf. This moving mechanism is driven according to a control signal supplied from a console (not shown), and the size and shape of the irradiation opening formed by the two leaf groups (that is, the size and shape of the irradiation field on the body surface). Equivalent) can be changed in real time.

  Further, the gantry support 22 can be rotated in the clockwise direction and the counterclockwise direction with respect to the entire gantry 21 by a built-in drive mechanism. The operation of the drive mechanism is also performed based on a control signal from a console (not shown).

  First, in the treatment planning device 5, treatment plan information is created. As shown in FIG. 2, the treatment planning apparatus 5 includes patient information storage means 51, irradiation apparatus information storage means 52, treatment room information storage means 53, and approval information generation means 54.

  The patient information storage means 51 is means for storing patient information such as name, ID, treatable date and time zone for each patient obtained from HIS (not shown) or the like via a communication line.

  Irradiation device information storage means 52 is a radiation type, energy intensity, working day, radiation type switching time, energy intensity switching time, and beam course for each radiation irradiation device (from one radiation irradiation device to one treatment room. It is a means for storing radiation irradiation apparatus information such as a switching time for two radiation irradiation ports (= ports).

  The treatment room information storage means 53 includes an installation port for each treatment room (a plurality of ports with different irradiation directions may be provided in each treatment room), an available date, a preparation time for each treatment, and once. It is a means for storing treatment room information such as the time for cleaning up for each treatment and the time for replacing a patient for each treatment.

  The approval information generation unit 54 receives data from the patient information storage unit 51, the irradiation device information storage unit 52, and the treatment room information storage unit 53, and receives the patient schedule indicating the patient's scheduled treatment date and the radiation type and energy of the radiation irradiation device. Intensity, scheduled use date, radiation type and energy intensity of each day, radiation irradiation device operation schedule showing beam course switching order, treatment room use scheduled date, patient assignment for each treatment room and each day It is a means for generating three types of treatment plan information with a treatment room schedule indicating the treatment order of patients.

  As shown in FIG. 2, the collation recording device 4 includes a workflow information setting unit 41, an approval screen creation unit 42, a storage unit 43, an approval unit 44, a collation unit 45, and a transmission / reception unit 46. .

  The workflow information setting means 41 displays workflow information including the number of approvers who approve the treatment plan information, the approver terminal used by each approver, and the order of the approver (for example, connected to the verification recording device 4). It is a means for confirming a workflow for approval in response to an input or selection from an approver, displayed on a monitor (not shown). Specifically, prior to approval work, the number of approvers to approve, the breakdown of those approvers (whether they are doctors, radiologists, or specific persons) and the order in which they approve them It is a support means for setting.

  The approval screen creation means 42 is means for displaying the generated treatment plan information and interactively correcting the treatment plan information. In particular, the approval screen creation means 42 of the present embodiment receives the treatment plan information generated by the approval information generation means 54, and displays a check box that allows input of approval / disapproval for each parameter constituting the treatment plan information. .

  The storage means 43 is means for storing the treatment plan information transmitted from the treatment planning device 5 and showing the treatment content necessary for each treatment site of each patient, and the workflow information created by the workflow information setting means 41.

  The approval unit 44 accepts that a plurality of examiners approve the treatment plan information corresponding to the treatment plan information to be executed by the input unit, determines the corresponding treatment plan information, and performs radiation in the radiation therapy apparatus 2. This is a means for setting the irradiation condition.

  The verification unit 45 is a unit that receives the setting result transmitted from the radiation therapy apparatus 2, compares it with the treatment plan information approved by the approval unit 44, and transmits the verification result to the radiation therapy apparatus 2. For example, it is a means for collating whether the radiotherapy apparatus 2 is set according to the treatment plan information approved by the examiner. Accordingly, no radiotherapy is performed unless it is determined that the collation result by the collation means 45 is correct.

  Next, the operation of the present embodiment will be described with reference to the flowchart shown in FIG.

(Setting workflow information)
In the present embodiment, “workflow information” is set before performing radiation therapy on a patient. The setting of the “workflow information” is a process for setting under what conditions the approval of the created treatment plan information is performed. Specifically, a workflow information setting screen 1000 as shown in FIG. 4 is displayed on the screen of the treatment planning device 5 (the screen of the monitor of the treatment planning device referred to in the present claim). This is a process of individually selecting approvers 1002 to 1002 (in the figure, approver 1 (1002a) to approver 3 (1002c)) according to the number of approvals input. It should be noted that these approvers 1 to 3 (in the figure, approver 1 (1002a) to approver 3 (1002c)) are displayed in a number corresponding to the number of “approval times” 1001. For example, when “5” times are input in “Number of approvals” 1001, approvers 1 to 5 are displayed.

  After inputting the “approval count” 1001 and selecting the “approver” 1002a to 1002c corresponding thereto, when the “registration” button 1003a is selected, the workflow information setting means 41 performs the “approval count” and each approval operation. The “approver” is associated and stored in the storage unit 43. In this embodiment, the workflow information related to the approval of the treatment plan information is set to “approver 1 =“ clinical radiographer ””, “approver 2 =“ doctor ”” and “approver 3 =“ radiation handling chief ”. "

(Creation of treatment plan information)
Then, patient information is acquired about the patient used as the object which produces treatment plan information (S3), and the image which image | photographed the said patient with CT system 1 is then acquired (S4). Then, based on the acquired image, the approval information generation means 54 calculates the number of irradiation days from the total dose and one irradiation dose, and creates treatment plan information for all schedules (S5).

  The generation of the treatment plan information is specified based on the patient information and the image on the display screen as shown in FIG. 5 showing the plan information in the initial state and the display screen shown in FIG. 6 showing the port information in the initial state. It is generated by assigning plan information such as the irradiation field and port information. Among these, for example, when the total monitor unit (MU) value is determined to be 1000 MU for the patient who is the subject of the image, the port information is 25 MU (treatment plan a) from above the patient and 25 MU from below the patient. (Treatment plan b) is performed, and a treatment period of 20 days is set by upper and lower irradiation per day. The input screen is shown in FIG.

  The treatment plan information generated by the approval information generation unit 54 is linked to the patient information and stored in the workflow information setting unit 41 (S6).

(Approval of treatment plan information)
Next, the created treatment plan information is approved by a plurality of examiners (approvers) along the “workflow information” stored in the storage unit 43. Specifically, the “workflow information” is set such that “approver 1 =“ radiological technician ”,“ approver 2 = “doctor” ”, and“ approver 3 = “radiation handling chief”. Therefore, first, a “medical radiographer” who operates the treatment planning apparatus 5 performs an approval process for the treatment plan information (S7). Note that “approver 2 =“ doctor ”” and “approver 3 =“ radiation handling chief ”” set in the “workflow information” use the approver terminal 9a and the approver terminal 9b, respectively. It is assumed that it is recorded in the means 43.

  The approval process here is a port information screen 3000 (treatment plan information screen, FIG. 7) in which each parameter (for example, “irradiation dose”, “upper aperture opening”, etc.) constituting the port information is provided with a check box 3001. The transmission / reception means 46 sends it to the monitor (not shown) of the treatment planning apparatus 5 and displays it on the screen. The “medical radiographer” who is the approver here uses the input means of the treatment planning apparatus 5 as the confirmation target. This is done by checking a check box 3001 attached to a certain parameter.

  After that, the “radiological technician” who is the “approver 1” initially set by the “workflow information” uses the input means of the treatment planning device 5 to confirm on the “plan information” screen 2000 (see FIG. 5). When the check box 2002 attached to the target parameter (for example, “treatment site”, “irradiation method”, etc.) is checked and the “approval button” 2001 in the screen is selected, the approval unit 44 Determines that all the examiners (approvers) to be approved have been completed with reference to the “workflow information”, assuming that the approval by the “approver 1: clinical radiographer” has ended (S10). In this approval process, “approval is not completed” (S10-No), so the treatment plan information is transmitted to the approver terminal 9a. This treatment plan information can also be viewed by an approver (in this case, “approver 2: doctor”) who operates the approver terminal 9a through the monitor of the approver terminal 9a.

  The approval process here also includes a port information screen 3000 (treatment plan information screen, FIG. 7) in which each parameter (for example, “irradiation dose”, “upper aperture opening degree”, etc.) constituting the port information has a check box 3001 added thereto. (See) is sent to the monitor of the treatment planning device 5 and displayed on the screen, and the “doctor” as the approver is attached to the parameter to be confirmed using the input means of the treatment planning device 5 This is done by checking the check box 3001.

  Thereafter, the “doctor” who is the “approver 2” set second by the “workflow information” uses the input means of the treatment planning device 5 to check the “plan information” screen 2000 (see FIG. 5). When the check box 2002 attached to a parameter (for example, “treatment site” or “irradiation method”) is checked and the “approval button” in the screen is selected, the approval unit 44 Assuming that the approval by “approver 2: doctor” is completed, it is determined whether all the examiners (approvers) to be approved are completed with reference to the “workflow information” (S10). In this approval process, “not approval completed” (S10-No), so the treatment plan information is transmitted to the approver terminal 9b. This treatment plan information can also be viewed by an approver who operates the approver terminal 9b (in this case, “approver 3: radiation radiation chief”) through the monitor of the approver terminal 9b.

  The approval process here also includes a port information screen 3000 (treatment plan information screen, FIG. 7) in which each parameter (for example, “irradiation dose”, “upper aperture opening degree”, etc.) constituting the port information has a check box 3001 added thereto. The transmission / reception means 46 sends it to the monitor of the treatment planning apparatus 5 and displays it on the screen. The “radiation handling chief” who is the approver here uses the input means of the treatment planning apparatus 5 to set the parameters to be confirmed. This is done by checking the attached check box 3001.

  After that, the “radiation handling chief” who is the “approver 3” last set by the “workflow information” uses the input means of the treatment planning device 5 on the “plan information” screen 2000 (see FIG. 5). When the check box 2002 attached to the parameter to be confirmed (for example, “treatment site”, “irradiation method”, etc.) is checked and the “approval button” in the screen is selected, the approval unit 44 Determines that all the examiners (approvers) to approve are completed with reference to the “workflow information”, assuming that the approval by “approver 3: radiation radiation chief” has ended (S10). In this approval process, since “approval end” (S10-Yes), treatment plan information is transmitted to the radiation therapy apparatus 2 as an instruction to start irradiation (S11).

  In addition, in the above approval process, when there is something that cannot be approved in the check box 2002 and the check box 3001 attached to each parameter, that is, a parameter that cannot be approved in the position of the approver is included in the treatment plan information ( In S8-No), the treatment plan information is retransmitted to the previous approver so that the approver before the approver performs the re-approval work (S9).

  Here, the check box 2002 and the check box 3001 are not necessarily attached to all the parameters, and a part or all of them are displayed according to the role of the approver who checks the check boxes. For example, the approval information generation unit 54 attaches a check box 2002 and a check box 3001 to all parameters, but the approval unit 44 that refers to the set “workflow information” tries to display it via the transmission / reception unit 46. The check boxes are not displayed for parameters that do not require approval on the monitor of the approver terminal to be processed.

  In the radiotherapy apparatus 2 to which the treatment plan information has been transmitted, first, the position of the patient is moved to the irradiation position, and irradiation parameters are set based on the value of the treatment plan information sent from the verification recording apparatus 4 (movement of the gantry angle, etc.). Is performed by the examiner, and the setting result is transmitted to the verification recording device 4 by an input means or the like.

  In the collation recording apparatus 4 that has received the setting result transmitted from the radiation therapy apparatus 2, the collation unit 45 collates the treatment plan information included in the selected schedule with the setting result. This setting result is preferably recorded and stored in the collation recording device 4 (S12).

  Here, if the collation result output by the collation unit 45 is correct, that is, if the treatment plan information included in the selected schedule is the same as the setting in the radiation therapy apparatus 2 (S13-Yes), the treatment plan information is included in the treatment plan information. Based on this, the radiation therapy apparatus 2 irradiates the subject with radiation (S14).

  The generated treatment plan information is approved based on the workflow information set in advance for the number of approvals for the generated treatment plan information and the identification of the approver. As a result, medical accidents such as mis-irradiation and over-irradiation can be prevented. This approval process can be used in the same manner even when the treatment plan information is changed.

  Each above-mentioned embodiment is an example of the present invention, and the present invention is not limited to each embodiment. In addition, various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

The block diagram which shows the structure in one Embodiment of the radiotherapy system which concerns on this invention. The block diagram which shows the structure in one Embodiment of the radiotherapy system which concerns on this invention. The flowchart which shows the operation | movement of the data transmission regarding approval in one Embodiment of the radiotherapy system which concerns on this invention. The figure which shows the setting screen of the workflow information in one Embodiment of the radiotherapy system which concerns on this invention. The figure which shows the screen of the plan information (initial time) in one Embodiment of the radiotherapy system which concerns on this invention. The figure which shows the screen of the port information (initial time) in one Embodiment of the radiotherapy system which concerns on this invention. The figure which shows the approval screen of the port information in one Embodiment of the radiotherapy system which concerns on this invention. The figure which shows the port information display screen of the conventional radiotherapy system. The figure which shows the plan information display screen of the conventional radiotherapy system.

Explanation of symbols

1 CT system for radiation therapy planning (CT system)
2 Radiation therapy equipment (treatment equipment)
DESCRIPTION OF SYMBOLS 3 Transmission line 4 Collation recording apparatus 5 Treatment plan apparatus 9 Approver terminal 11 Gantry 12 Bed 12a Top plate 13 Console 20 Treatment table 20a Top plate 21 Base 21a Irradiation head 22 Base support body 41 Workflow information setting means 42 Approval screen creation means 43 Storage means 44 Approval means 45 Verification means 46 Transmission / reception means 51 Patient information storage means 52 Irradiation apparatus information storage means 53 Treatment room information storage means 54 Approval information generation means P Subject

Claims (4)

An image generation device for obtaining image data of a lesion of a subject;
A radiation therapy device for exposing the subject to radiation;
A treatment planning apparatus that displays the image data on a monitor and creates treatment plan information including a treatment site and radiation irradiation conditions;
An approver terminal for approving the treatment plan information;
Display the workflow information including the number of approvers who approve the treatment plan information, the approver terminal used by each approver and the order of the approver on the display means, and receive input or selection from the approver for approval. Workflow setting means for finalizing the workflow,
Storage means for recording treatment plan information transmitted from the treatment planning device;
When the workflow information is set by the workflow information setting means, the treatment plan information is transmitted to the approver terminal used by the identified approver based on the workflow information and the treatment plan information is transmitted. A transmission / reception means for receiving approval information from the approver terminal,
The content of the received approval information is determined, and based on the determination result and the workflow information, the treatment plan information is transmitted to another approver terminal, or triggered by being approved by all the approvers. Approval means for instructing the transmission / reception means to transmit the treatment plan information to the radiation therapy apparatus and to set radiation irradiation conditions;
In response to the setting result of the radiation irradiation condition transmitted from the radiation treatment apparatus, a collation recording apparatus including collation means for collating with the transmitted treatment plan information is connected to the network,
The radiotherapy system, wherein the radiotherapy apparatus performs radiotherapy based on the treatment plan information when the setting result matches the treatment plan information by the collating means.   The workflow setting means displays a plurality of approver selection fields on the display means according to the number of approvals, and prohibits selection of an approver selected in one selection field in another selection field. The radiotherapy system according to claim 1.   Approval screen creation means is provided in the verification recording device for creating approval screen information in which a check box that allows approval for a part or all of each parameter constituting the treatment plan information is attached to the treatment plan information. The radiation therapy system according to claim 1, wherein   The radiotherapy system according to claim 3, wherein the approval screen creation unit changes a check box of a parameter that can be approved for each approver based on the set workflow information.

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